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N-Acetyl L-Cysteine (NAC) Powder

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Price From: FROM $12.96

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N-Acetyl L-Cysteine (NAC) Powder


  • Supports liver function
  • Digestive health
  • 100% pure
  • Taste

  • Mixability

N-Acetyl L-Cysteine (NAC) is an amino acid that synthesizes glutathione, an important antioxdiant. NAC promotes healthy liver function, helps maintain healthy blood sugar levels, and supports digestion.


Serving Size & Timing

It is suggested that N-Acetyl L-Cysteine be taken in serving sizes of 600mg (scant 1/4 tsp) up to three times per day, or as directed by a physician.

Nutritional Information

Supplement Facts

Serving size: 600 milligrams
Serving per container: *
Amount Per Serving % Daily Value**
N-Acetyl L-Cysteine 600mg *
* Daily Value not established.
** Based on 2,000 calorie diet


Sugar, soy, dairy, yeast, gluten, corn and additives.

As a dietary supplement, take 600 mg (just under 1/4 tsp) up to three times daily, or as directed by physician.

US Standard Measuring Spoons
Spoon Size(level) milligrams
1/8 teaspoon 340
1/4 teaspoon 681
1/2 teaspoon 1363



This N-Acetyl L-Cysteine supplement is considered pharmaceutical grade and has no fillers of any kind present in it.


As long as suggested serving sizes are adhered to, this product is considered safe. However, if you are taking nitroglycerin or any medications that affect the heart, a medical professional should be consulted beforehand. It is also possible that NAC may block insulin, which means that diabetics are cautioned from taking this supplement.

If taking more than the recommended amount, side effects such as vomiting, nausea, headache and gastrointestinal pains may be experienced from use of this supplement. However, these side effects are quite rare. Taking a larger amount of one supplement may cause the absorption of other supplements to be less effective; it is important to supplement other minerals such as copper and zinc to make up for what is being lost.


This product is water soluble and has a bit of a sour flavor. It can be mixed with either water or juice. If the sourness of the supplement is too much to handle, it may be purchased in capsule form. Of the many forms of Cysteine, N-Acetyl L-Cysteine is easily the most bioavailable. It should be stored in an area that is free from light, heat and moisture.


Due to varying import regulations, not all of our supplements are available to international customers. This product is restricted for sale in the following countries:

  • Germany
  • Netherlands
  • Sweden
California residents: Click here for Proposition 65 warning.

Customer Reviews

Pure N-Acetyl L-Cysteine Powder
I have taken NAC for many Years because it is the primary precursor of glutathione, which is of paramount importance for liver health. It is also an important and extremely potent antioxidant. I take it in combination with milk thistle extract (q.v.). I am convinced that this combination keeps my liver enzymes in the proper range, as evidenced by my annual blood tests.- I like the great price BS charges for the powder, but because of organoleptic problems (very acrid taste) I fill my own size 00 capsules, which also allows me to to mix the NAC with the milk thistle extract. - As always I commend BS for great products, rock bottom prices, and prompt shipping: I have been buying all my supplements which I use in amounts of greater than 500 mg per dose from BS. I am a satisfied - and permanent customer - of BS!*

On 5/5/2019 Hans H. said...

Fast Shipping
I take this at the advice of my doctor for a variety of issues*

On 4/26/2019 Ky M. said...

Great product with loads of benefits. Ive mainly taken for it's liver benefits. Great for anyone who drinks or just for regular supplementation. *

On 3/8/2019 Matthew said...

NAC Works
Started taking NAC this week and I feel a detoxing affect already. Going to continue to take NAC! *

On 12/3/2018 Brandon said...

Smells Gross, Works Great!!
This is the best NAC product I have tried and I plan to stick with the Bulk Supplements brand as the powder is pure and the price is very reasonable. I do have to hold my breath while I measure the NAC powder into my smoothie. It smells like rotten eggs. But once the powder is mixed into the smoothie, it no longer smells and the taste is not discernable. However, there is no question (for me) that it helps balance mood and enhance the sense of well-being!*

On 10/30/2018 MARYA said...


On 7/31/2018 R said...

Pure N-Acetyl L-Cystein

Great value on pure NAC in the kilogram size.

NAC is one of the most important longevity supplements.

My daily routine is 600 mg to one gram twice a day.

This one purchace is a two year supply.

Thank you BS!

On 7/19/2018 Tereza said...

Use Every Day for Better Health
This NAC is a white powder that tastes slightly acidic in water but blends easily into my morning green drink and does not cause that drink to have that acidic taste. I understand that NAC helps to create glutathione in the body and this is so important to have for the creation of health. Taking glutathione alone as a supplement may not work. I enjoy using all of your powders for their purity and lack of fillers.

On 6/27/2018 Shirley said...

I've been taking NAC for a few weeks to support my lungs. I've been emptying capsules into my drinking water and now, with the powder, I can just measure and add. It has a slightly sharp taste that I offset by adding a little lemon juice and stevia. It mixes instantly and works great. *

On 6/17/2018 Gail said...

pretty amazing
I have taken tons of supplements for years but finally got around to including NAC (at fairly high doses). As usual the stuff from BS is (not BS) super pure, dissolves easy, has high gut tolerance, tasts sour in water but tolerable...

As for NAC itself. EVERY SINGLE PERSON SHOULD BE TAKING IT. I feel way better and it has dropped my over inflammation noticeably. My mind is calmer, too. My body and mind just feel less "agitated". My skin has calmed down as well (less redness on face = less overall inflammation).

NAC was one of those things I knew was great, and I finally just got around to ordering it, based on a blog post by a guy I follow. *

On 6/16/2018 Jered said...

Great Product at a Great Price!
Great Product at a Great Price!*

On 6/7/2018 Joshua said...

Great product
Just starting to use this product and several others. If all goes well it will help in my healing process. Looks good.*

On 5/21/2018 steven said...

Good quality.
Good product, easy to mix, works well with citrulline malate for preworkout. Fast shipping

On 4/20/2018 Paul said...

N-Acetyl L-Cysteine
Bulk supplements NAC is a very pure product and superior to another brand that I took previously. The reason I began taking NAC is for bipolar depression and OCD which I have been dealing with for the last 28 years. The NAC seems to lift the brain fog and put me in a better mood and reduce some of the obsessive thinking. NAC combined with several other supplements I purchased from BS along with therapy Gives me a lot of hope to treat these debilitating conditions. I will be a Bulk Supplements customer for life and am grateful to have found such wonderful pure products from a company with top notch service. *

On 1/16/2018 Timothy said...

Quality Product
This is my first time ordering from this company they did not disappoint.The package arrived fast and was packaged very well. The smell is a bit stinky when opened but if you can get pass this its great. I take it helps my anxiety and my son has multiple disabilities it helps calm him down and helps his focus. Ice cold water with a little Dasani flavor drops you can't taste it! I will continue to try products with bulk supplements knowing they are pure no fillers. *

On 12/17/2017 Julie said...

good stuff!
This is good quality, keeps well, sour but not bad taste, way cheaper than capsules!*

On 9/29/2017 thomas said...

Less fidgety
I like NAC because it competes with the neurotransmitter glutamate. I feel less fidgety, anxious and impulsive on it. I think of it as the Obama supplement because Obama was so composed, present, and centered as a person. This supplement inches you ever so incrementally towards Obama's demeanor.*

On 8/23/2017 Ryan said...

This is an excellent product for detoxification and mucous reduction. I have been using NAC for a long time and will continue to buy this form.*

On 6/24/2017 sultan said...

Vegan (and vegetarian) NAC
After looking at 2 other websites, I was very pleased when the customer service rep. told me that this product is vegan* and vegetarian*. Other websites derive NAC from duck feathers (starting material is duck feathers). I'm glad Bulk Supplements chose to spend a little extra for their customers!
*Always ask the representative before buying if it is vegan just in case that batch is not from a vegan supplier, although the representative said this almost never happens.*

On 6/5/2017 Syed said...

Boost your Immune System
When taken in 100% juice at night before bed consistently day after day it helps boost immune system where I was around everyone at the office who was hacking, coughing, upper respr.infections, flus, etc...without incident.*

On 5/25/2017 Eugene said...

NAC Powder
This product is easy to take in water with no unpleasant taste. it is good to know that I'm taking a product with powerful antioxidants that helps reduce inflammation, and a host of other diseases. This is an essential supplement.*

On 5/16/2017 Jeffrey said...

NAC powder
I bought this for my teenage grandchild who has AS. This product seems to really help his attitude. I was so glad to find it in a powder. *

On 5/15/2017 Shirley said...

I've only been using this for a few days so I really haven't noticed any noticeable changes to mention. At first I took this with water in the morning but if you have a sensitive stomach it may be better to take it with a little something. I'm excited to see what it will do for me as the weeks go on.*

On 5/2/2017 Sharon said...

I really like this product and depend on it. I suffer from fatigue and depression and when I use NAC it really helps me regain my energy and lifts some of my depression. I use 1/4 tsp 3x a day. The taste is a little bitter but it mixes really well. I take NAC, Glutamine, and Glycine together and feel a lot better both physically and mentally. Combing the three produces Glutathione a REALLY good antioxidant! *

On 4/17/2017 Donny Klein said...

My husband and I have taken NAC for a long time, but could never find NAC without additives. Thank you for a no additive product.. It helps reduce sinus allergy symptoms for us. Thanks, again.*

On 4/14/2017 Rachelle said...

Good product for clear lungs
I've been taking this product for 6 years now. I found Bulk Supplements to have the cleanest, no fillers and great price. I am allergic to 95% of supplements so I buy all of them in bulk and store them in glass jars for easy use. NAC had so many great qualities. I use it for daily detoxification and for my lungs. It works well with asthma and allergic reactions with a tight chest. I wouldn't be here today if it wasn't for NAC. We had fires for weeks with solid smoke and this kept me breathing. Also if you're a smoker it helps with that as well. I love this company. Great prices and service. *

On 4/13/2017 Kristie said...

Good product for clear lungs
I've been taking this product for 6 years now. I found Bulk Supplements to have the cleanest, no fillers and great price. I am allergic to 95% of supplements so I buy all of them in bulk and store them in glass jars for easy use. NAC had so many great qualities. I use it for daily detoxification and for my lungs. It works well with asthma and allergic reactions with a tight chest. I wouldn't be here today if it wasn't for NAC. We had fires for weeks with solid smoke and this kept me breathing. Also if you're a smoker it helps with that as well. I love this company. Great prices and service. *

On 4/13/2017 Kristie said...

NAC Powder
I started using NAC a little over a week ago. I sense that my energy levels have improved. I'm coming back from 5 months of IV antibiotics for a mysterious lung infection (no conclusive diagnosis of what) that mimicked lung cancer on a scan, and it's been a slow recovery. I had been stuck at about a 4 on a scale of 1 to 10, with 10 being a complete recovery to the level of health I was before I got sick, for the last 6 weeks. I have reckon I've gone from 4 to 6 since I got on the NAC, which in my mind is a substantial improvement. Yeah, when you're doing as many things as I am, you can't really call it a controlled experiments, but subjectively, my best guess is it is the NAC.

I had forgotten about all of the people who had reported improvements with their breathing after taking NAC until I started re-reading some of the earlier reviews, prior to writing this. I had a been having a lot of more wheezing the last month, which was really frustrating to me because I've been so proactive with trying to restore my lungs. Doctors have told me that I should expect there to be a fair amount of irreparable scar tissue in my lung because the organism that was infecting it basically ate away at the pulmonary tissue. You could see the holes and the scar tissue on the scan after the antibiotics killed off whatever the heck was growing in there. Anyway, what all of this is leading up to is that I have suddenly realized that my wheezing is now almost imperceptible. I'm stunned! Could it be the NAC? Given all of the other reviewers who said their breathing improved, my theory is - yes!

I will definitely be reordering this stuff in bulk. Thanks BS!*

On 4/13/2017 Steven said...

New NAC research finally got me to try it out.
I started out taking 600 mg. NAC three times daily.

I felt improved energy the first day.

N-acetyl-cysteine (NAC) is often used in medical emergencies to detoxify patients who have ingested poisonous substances.

Researchers at Oregon State now believe NAC could also be used at low doses to block the age-related loss of glutathione.

Separately Insilico Medicine researchers ran high-speed computer programs employing artificial intelligence biomedical algorithm simulations of more than 200 potential geroprotective compounds.

They narrowed the list down to four with the most potential to prevent the degenerative progression of damaged cells to a senescent state—and eliminate those that have reached irreversible senescence .

The “final four” compounds, myricetin, NAC, gamma tocotrienol, and EGCG each modulate a different but overlapping set of signaling pathways.

Supplementing with these nutrients in combination seems likely to reduce the body’s burden of senescent cells, promoting youthful function and preventing not one or two, but literally all of the known age-related disorders that threaten human lifespan and healthspan.


On 4/7/2017 Danney said...

The Real Deal
I've had previous experience with NAC in its capsule form. But it was always with other nutrients. In terms of tastes, its like ascorbic acid with a sulfuric-like after taste. In terms of effect, Its potent and its something I will continue to take for the duration of my God given life-span.*

On 4/5/2017 Anthony said...

WOW, great product!!
Wow....amazing difference. After taking this for some months, I am using a lot less asthma medicine. I am down to 1 main medicine and the emergency inhaler a few times a month. I am so happy with this product. This will stay for awhile. I am not sure why my system is not making this enzyme but until it does I will use this product.*

On 3/31/2017 Chris said...

excellent product
taking nac to lower homocystein .....seems to help.*

On 3/25/2017 peter said...

Quality NAC
I formulate and manufacturer for retail an dprivate label companies.

The BS NAC tested - so HPLC identified as pure - and works as expected.

Excellent Quality - Excellent Service - Excellent Price*

On 3/23/2017 Paul said...

N-Acetyl L-Cysteine
Great product, I notice a great improvement in my breathing.I would recommend this to everyone. I also noticed that my mucus issue is gone.*

On 3/22/2017 Thomas said...

A "NAC" for writing titles
An excellent product from Bulk Supplements!

I use NAC when I take Phenibut, it helps reduce it's side effects.*

On 3/16/2017 Trevor said...

N-Acetyl L-Cysteine
I am taking NAC for it's antioxidant properties, lung support, and value of lowering Homocysteine. Bulk Supplements powder provides a serving size of 600 mg at 1/4 tsp and is offered as clean and pure, which to date with all their products which I purchase, I have found no evidence to suspect otherwise. The company provides good customer service and offers their products at very competitive pricing.*

On 3/10/2017 Larry said...

N-Acetyl L-Cysteine
I am taking NAC for it's antioxidant properties, lung support, and value of lowering Homocysteine. Bulk Supplements powder provides a serving size of 600 mg at 1/4 tsp and is offered as clean and pure, which to date with all their products which I purchase, I have found no evidence to suspect otherwise. The company provides good customer service and offers their products at very competitive pricing.*

On 3/10/2017 Larry said...

N-Acetyl L-Cysteine
I am taking NAC for it's antioxidant properties, lung support, and value of lowering Homocysteine. Bulk Supplements powder provides a serving size of 600 mg at 1/4 tsp and is offered as clean and pure, which to date with all their products which I purchase, I have found no evidence to suspect otherwise. The company provides good customer service and offers their products at very competitive pricing.*

On 3/10/2017 Larry said...

Great product
This product always has the results I can count on also at a great price *

On 1/25/2017 randy said...

A Must Have
This is another product I am excited about finding here in bulk! NAC has a wide range of health benefits, but the one I seek the most is the anti-oxidant .

I also really like the no non-sense sales approach. I come here buy my stuff get FREE shipping - done! No need to buy so much to points etc. For me that is a breath of fresh air. What brings me back is good prices, awesome products and service! *

On 11/20/2016 Jo-Ann said...

So much mental clarity and focus!
This product is fantastic! Ever since I started taking NAC I have a more sound mind without my normal depression and lack of focus. It really does get rid of brain fog at the drop of a hat. I have so much mental clarity and energy when I wake up in the morning. I also am able to handle stressful situations that I would normally overreact to. When I'm physically working hard at my day job I feel more energized. Even when the day is over and I clock out from work to go home, My body feels just as good as it did when I first woke up out of bed. I cannot say enough good things about this product!!!*

On 11/14/2016 Aaron Riggins said...

Great Product
I started using this product about a week and half ago. My body feels better and I have more energy than I used to even after working longer days. Great product and great company, highly recommend!*

On 11/7/2016 Kayla said...

Works well
I started using n-acetyl L-cysteine last week to break down mucus in my lungs and so far it is working well. *

On 10/25/2016 JOSEPH said...

I have asthma and this helps with suppressing immune inflammatory responses to allergic reactions. It helps relax my lungs and makes me use my inhaler less.*

On 10/1/2016 Christopher said...

After reading all of the above testimonials it is hard to add anything, but my reason for using NAC is for the broad spectrum benefits such as the antioxidant benefits, the production of GSH & the possibility of it's role in destroying H-pylori. Am hoping it will benefit my husband's shortness of breath. The potentials are numerous.
Another great product & service from Bulk Supplements.*

On 9/25/2016 Selena said...

Awesome Product
I loved this stuff so much that I bought 2 kgs of this product. I've found nothing that even comes close to it when it comes to its antioxidant benefits and its liver support capabilities. And the pricing and service from bulk supplements is like no other! highly recommended!

Side tip: this stuff comes in quite handy when you're drinking to prevent hangovers. Just take a serving before heading to bed along with adequate water. *

On 9/19/2016 Sujayram said...

NAC works
I am impressed with the apparent benefit I receive from this product in improved breathing and other effects. I enjoy being able to set and monitor my dose, filling veggie capsules or mixing in a smoothie is the best way to go.*

On 9/17/2016 Suzan said...

Best Product
Again we used Bulk Supp's NAC and have had a amazing results and will be a customer for life like many of the other products they have that deliver at a great price. *

On 8/24/2016 James said...

Two parts here:

One, excellent quality, low cost, reasonable shipping on smaller orders, with no BS loyalty credits or other hoops to jump through. That is for everything I've ordered here. This may sound like a broken record (you are young enough to get the metaphor, remember LPs?) but it is a pleasant contrast with the sheer amount of hype one encounters when seeking out good supplements elsewhere.

Two: NAC being a precursor for glutiothione is what some (many?) EMSs give for certain oxaditive stress related emergencies; and is an important part of any pre-emptive health regimen. Use the interwebs.*

On 8/24/2016 HG said...

I feel this product is worth using as a traumatic brain injury survivor.*

On 7/30/2016 AJ said...

Been using NAC for awhile now and can definitely tell the difference in how much better my body feels. Just an overall feeling of better health and wellness*

On 7/14/2016 Bryn said...

Clean body
This is simply a great product because of the clean feeling it produces. It seems to be a good way to detoxify the body and clear the mind. I feel healthier while taking it, and it adds energy to my workouts. This is a very potent product. You may want to add some favoring before consuming. Overall, I'm very happy with the purchase and will be buying more when that time comes.*

On 6/14/2016 Brian said...

University studies show NAC increases lifespan of male lab animals.
I have had good results with the product. Do your homework and see for yourself*

On 6/8/2016 Robert said...

A great product for overall health
I love it. I pair it with green tea extract to protect my liver.*

On 6/2/2016 Aaron said...

I like the idea of a liver cleanse , It also has great mucus removing effect for the lungs . *

On 4/4/2016 Michael said...

It's only been 4 days and I'm already starting to feel calm and sleep well at night. Can't wait to see what happens in a few months. Super potent, you can smell the benefits as soon as you open the bag.*

On 3/30/2016 Alex said...

Essential Liver Function
Fantastic for those of us with autoimmune disorders attacking the liver, or just those of us who want to feel better Sunday mornings - it's step 1 to any smart person's hangover cure.*

On 3/29/2016 Connor said...

First Time using NAC
After reading about this supplement as a powerful anti-oxidant with a wide range of benefits, I decided to give it a try. It does have an odor and is tart, but it is not a big deal. I mixed mine with a little juice and it is easy to take. *

On 3/29/2016 Kimberly said...

I really enjoy the product & for the benefits it delivers. I see that you have the NAC in a lot of different quantities. I have found that your company has many of the products that I was searching for. The prices are great & for shipping, it is extremely fast. I will certainly buy again.*

On 3/19/2016 George said...

NAC/ Great value
I am well versed on the health benefits of NAC. I have been purchasing this in capsule form from NOW supplements. That is until I found the same thing in bulk form at

I purchase 500g of this product from them and am thrilled at the quality and the amount of money I saved. I am and will be a customer moving forward.*

On 3/9/2016 sean said...

NAC powder
Great product, when I reorder I will probably try the capsules. It mixes good in water, has a little bit of a scent to it. It is another great product from bulksupplements. This by far the most pure form of nac I have taken.*

On 2/23/2016 John said...

Best deal on NAC
I wish I began my use of NAC by ordering from Bulk Supplements. Just as they state the product easily mixes in water and a scant 1/4 teaspoon equals 600 milligrams. I find that the Ziploc package in which they send it is the most convenient way to use and store it. I was vaguely aware that NAC has a strong scent, but I never opened the capsules from another supplier that I had started out with. It is obvious upon opening the packet from Bulk Supplements that it is pure. My order from Bulk Supplements arrived right on schedule. To me, this is the only way to go for NAC.*

On 2/16/2016 Timothy said...

NAC works for my family
I had done some research on natural treatments for breathing problems and sleep apnea. I've started giving this to my children 4, 7 and 9 in 600 mg doses twice a day. My four year old was just diagnosed with asthma which only appears at night and seems to become aggravated when he has a viral infection. My 9 year old appears to have sleep apnea possibly from swollen turbinates and a deviated septum. Their may be an issue with something in our house and we're moving soon. After 3 days of giving them the NAC, they, especially the 4 year old, are breathing much better at night. I use this with ginger and turmeric for inflammation, ALA, vitamin D. Research this before you give this to your own children, but we have had no negative side effects. And this beats having to resort to albuterol or the like. I love that this product is pure and arrives in a timely manner.*

On 1/26/2016 Belinda said...

NAC is a very valuable addition to your dietary regime
NAC is essential in creating gluthathione and great for aiding the other antioxidants in your diet. I take mine with equal amounts of vitamin c and this world well for me. As usual, Bulk Supplements delivers quickly and provides the purest products available.*

On 1/17/2016 robert said...

I am switching over to B.S. NAC from another brand in capsule form. I have been switching to B.S. over time with any supplement that they stock that I use and I have never been disappointed. Most of the time I feel that B.S. is a superior product to what I have been taking. I feel this is the case with this NAC. Using B.S. high quality products has become my new benchmark for quality. Taking other brands with all the fillers just doesn't make sense to me anymore, plus the fact that using B.S. is less expensive makes it a no brainer. I take NAC for general health maintenance - to boost and maintain glutathione " the master antioxidant " levels. Customer service with this company has always been outstanding.*

On 11/23/2015 JD said...

N - Acetyl - Cysteine powder
Not only does NAC promote glutathione production (the body's major anti-oxidant), it has now been shown to activate the human telomerase gene, which is known as the fountain of youth gene. Great price for a supplement that virtually everyone should be taking.*

On 10/26/2015 Donald said...

In my research of NAC, here are a few things I found out . NAC Is the dietary supplement of choice for building up cysteine or conserving the body's store of glutathione . Is a chelator of heavy metals . ( might help people with metal fillings in their teeth .)Is an anti-inflammatory. Smokers should consider taking . Smoke can cause cross linking of DNA . Should be taking with vitamin C . There are many more but that is enough for me .I hope this helps.


On 10/26/2015 James L. said...

Good Antioxidant
Good Antioxidant, good price, fast shipping. Foul smelling, but gets the job done. Thank you, we will definitely be buying it again.*

On 10/26/2015 Melissa said...

Great antioxidant.
Great antioxidant. Unbelievable price. Fast shipping. My skin is brighter and I am more energetic. It has a sour taste but it is ok. Thank you bulksupplements. Will buy it again!*

On 10/16/2015 Q said...

N-Acetyl L-Cysteine (NAC) is a go to supplement for me, It is so important in managing inflammation and overall metabolic function. Of course I but from Bulk Supplements for not only the great price but the excellent quality and customer service.*

On 10/13/2015 Brett said...

Brett harsha
N-acetyl L-cysteine is a must have for me. it plays such a huge role in combating inflammation and providing overall metabolic health. However it is one of the more expensive supplements at the store and as it grew in popularity so did the price. as with many other supplements. If people think a supplement fights fat for instance, there goes the price through the roof. Take CLA for example. That is why i am so glad I found bulk supplements, they have great quality supplements and customer service you can't beat all for a low price. *

On 10/13/2015 Brett said...

Very potent and pure
This is a potent and very pure form of NAC that I have yet to come across in other brands. Will be coming back for more in addition to other complimentary supplements for glutathione synthesis. *

On 10/11/2015 Professional said...

I have a medical condition that has left me feeling weak, sore and slow for the past few years. Adding NAC to my daily routine has change that, I feel great now, I started running again and working out.*

On 8/24/2015 Matthew said...

N-Acetyl L-Cysteine
The is a powerful antioxidant SOD/Glutathione inducing pro-drug that puts my arthritis into remission and quenches the chest pains that I've had for years, resulting from 3 different heart surgeries. This form of NAC seems to have great bioavailability, unlike others forms, and many other antioxidant concoctions.*

On 8/18/2015 JW said...

Best NAC Product
After doing DNA testing and seeing the recommended results from Nutrahacker for supplementation, I decided to add NAC and DIM. The NAC I got previously was good I suppose, really couldn't tell a difference in how I felt, but the NAC from Bulk Supplements was different. In just a few days, it seemed my fibromyalgia pain has lessened considerably. I hope this is the case. I am very impressed with the staff and customer service at Bulk Supplements and will continue to order from them. *

On 8/16/2015 Diana said...

I always feel better while taking NAC, can't beat the price!*

On 7/12/2015 Joshua said...

The NAC for training
As an old gym rat I love N-acetyl-L-cysteine for getting rid of soreness. I initially took it just for the free radical scavenger effect. While taking it in combination with L- glutamine I discovered it was almost impossible to make myself sore. I have even tried to produce soreness while taking this and failed. I hear young guys say they like soreness because it shows them they worked out hard. This old man knows he works out hard and like the fact that N-acetyl-L-cysteine helps him not move like an old man. *

On 7/1/2015 Barry said...

N-Acetyl l-cysteine has stopped me from getting colds after running five fifty-second sprints three times weekly.
First I want to say that this n-acetyl l-cysteine (NAC) is rated US Pharmaceutical grade, a very high grade of purity, according to the BulkSupplements website. This US-based purity test assures that even if this n-acetyl l-cysteine is manufactured in China that purity problems of any kind should be extremely unlikely.

I run five fifty-second sprints in the mornings. Over the past year I have gotten bad colds lasting over two weeks several times. I figured it was due to exercising too hard. I have progressively cut back from eight fifty-second sprints seven days a week to five fifty-second sprints three days a week. But even breathing through my nose the entire time while running I was still getting colds. For the last six months, I have been taking 0.6 grams of n-acetyl-l-cysteine three times a day, which has knocked out the colds and stopped most of the coughing and sniffling at the ends of the runs as well.

The following is a list of clinical trials, most double-blinded and placebo-controlled, recorded at the National Medical Library, MEDLINE, as abstracted by GreenMedInfo for n-Acetyl l-cysteine:

1. N-acetylcysteine supplementation reduces the inflammatory response following high-intensity exercise.
2. N-acetylcysteine increases the fluidity of airway mucus in patients with Cystic Fibrosis.
3. N-acetylcysteine reduces inflammation in patients with cystic fibrosis.
4. Mobile phone radiation-induced free radical damage in the liver is inhibited by the antioxidants n-acetylcysteine and epigallocatechin-gallate.
5. NAC and thioproline improves redox status and immune function in an animal model of aging.
6. Pretreatment with NAC and curcumin inhibit staphylococcal enterotoxin A-induced fever in rabbits.
7. Sulforaphane and NAC (N-acetyl-L-cysteine) upregulate T(H)1 immunity in aging.
8. The oxidative stress associated with intraocular hypertension in rats may be ameliorated by n-acetylcysteine supplementation.
9. A combination of Lysine, Proline, Vitamin C, Arginine, Polyphenols, NAC (N-acetyl-L-cysteine), Selenium, Copper, Manganese induces apoptosis in HTLV-1 positive and negative malignant T-cells.
10. A number of natural substances [Alpha-Lipoic Acid, Antioxidant formulas, Cocoa, Coenzyme Q10, NAC (N-acetyl-L-cysteine), Spirulina] have therapeutic value in the partial prevention of cardiac remodeling and atrial fibrillation.
11. Bitter melon extract, NAC, grape seed extract and other natural antioxidants counteract drug-induced oxidative stress and resultant cell death.
12. Elevating the levels of antioxidants in muscle-derived stem cells with NAC can significantly influence their tissue regeneration capacity.
13. Ethanol exposure may induce phenotypes associated with cancer cell stemness and NAC may protect against these adverse changes.
14. Glutathione precursors [such as NAC] and/or glutathione protects against methylmercury-induced neurotoxicity.
15. N-acetyl cysteine has antiproliferative effects on pancreatic cancer cells.
16. NAC and curcumin ameliorate pesticide-induced oxidative DNA damage in human peripheral blood mononuclear cells.
17. Resveratrol and N-acetylcysteine block the cancer-initiating step in breast cancer cells.
18. Resveratrol and NAC may prevent age-associated decline in skin and/or connective tissue quality.
19. Resveratrol and NAC may prevent DNA-estrogen adducts associated with carcinogenesis.
20. The antioxidants NAC and glutathione attenuate oxidative stress and endothelial dysfunction caused by active antiretroviral therapy.
21. Various antioxidants may be preventive and therapeutic in treating influenza A (H5N1) infection (e.g. selenium, vitamin E, NAC/glutathione, resveratrol, and quercetin).
22. Water-soluble antioxidants [NAC (N-acetyl-L-cysteine) and Vitamin C] improve the antioxidant and anticancer activity of low concentrations of curcumin in human leukemia cells.
23. Acetylcysteine is beneficial in treating idiopathic pulmonary fibrosis.
24. The same multi-vitamin/nutrient formula [Acetyl-L-Carnitine, Folic Acid, NAC (N-acetyl-L-cysteine), SAMe (S-adenosylmethionine), Vitamin B6, and Vitamin E] has therapeutic value in early-stage as well as moderate to later-stage Alzheimer's disease.
25. A nutrient combination [Acetyl-l-carnitine, Alpha-Lipoic Acid, Fish Oil, Ginkgo biloba, Huperzine, Multivitamin, NAC (N-acetyl-L-cysteine), and Vinpocetine] improves cognitive function in head-injured former NFL players.
26. Long-term N-acetylcysteine and L-arginine administration reduces endothelial activation and systolic blood pressure in hypertensive patients with type 2 diabetes.
27. Melatonin, quercetin and NAC are beneficial in reducing oxidative stress in the patients with Grave's Disease.
28. N-acetyl cysteine (NAC) may have a therapeutic role in treating nail-biting.
29. N-acetyl cysteine has a beneficial effect on physical performance in moderate-to-severe COPD.
30. N-acetyl cysteine may have a protective effect against reperfusion injury in liver transplant recipients.
31. N-Acetyl-cysteine has a protective effect against noise-induced temporary [hearing] threshold shift in male workers.
32. N-acetylcysteine appears to have a therapeutic value in the treatment of Raynaud's phenomenon secondary to systemic sclerosis.
33. N-acetylcysteine compares favorably to metformin on mammographic density in postmenopausal women.
34. N-acetylcysteine may be a safe and effective option to augment standard treatment in patients with refractory obsessive-compulsive disorder.
35. N-acetylcysteine may be therapeutic in treating serotonin reuptake inhibitor refractory obsessive-compulsive disorder.
36. NAC appears a safe and effective augmentation strategy for depressive symptoms in bipolar disorder.
37. NAC has value in the psychosocial treatment for cannabis dependence in adolescents.
38. NAC is effective for treating irritability in children with autistic disorder.
39. Vitamin E and N-acetylcysteine are an effective antioxidant adjuvant therapy in children with acute lymphoblastic leukemia to reduce the chemo-/radiotherapy toxicity of treatment.
40. A combination of nutrients [Alpha-Lipoic Acid, B-complex, Curcumin, EGCG (Epigallocatechin gallate), Folic Acid, NAC (N-acetyl-L-cysteine), Piperine, and Vitamin C] improves cognitive functioning while decreasing Alzheimer disease neuropathology in an animal model.
41. A diet supplemented with thiolic antioxidants improves immune and macrophage functions in an animal model of premature aging.
42. Curcumin and NAC prevent fatty acid changes produced by ethanol and also reduce the inflammatory response of ethanol by reducing the level of prostaglandins.
43. Curcumin and NAC protect against valproate-induced liver toxicity.
44. Curcumin protects rats against acetaminophen-induced hepatorenal damages and shows synergistic activity with N-acetyl cysteine.
45. Curcumin, silymarin and N-acetyl cysteine protect against antitubercular drug-induced hepatotoxicity.
46. Dietary antioxidants [Alpha-Lipoic Acid, NAC (N-acetyl-L-cysteine), Selenium, Vitamin C, and Vitamin E] have a protective effect on proton total-body irradiation-mediated hematopoietic cell and animal survival.
47. N-acetyl cysteine has a neuroprotective effect against aluminum-induced cognitive dysfunction and oxidative damage.
48. N-acetylcysteine reduces aluminum-induced myocardial oxidative injury.
49. N-acetyl cysteine has a therapeutic role in attenuation of diabetic neuropathy in an animal experimental model.
50. N-Acetylcysteine ameliorates skeletal muscle pathophysiology in a mouse model of muscular dystrophy.
51. N-acetylcysteine attenuates noise-induced permanent hearing loss in diabetic rats.
52. N-acetylcysteine inhibits hypoxic pulmonary hypertension most effectively in the initial phase of chronic hypoxia.
53. N-acetylcysteine may be beneficial in preventing vascular restenosis.
54. NAC and curcumin protect against malathion-induced toxicity in human peripheral blood mononuclear cells.
55. NAC and myo-inositol work synergistically to prevent lung tumor formation in a mouse model.
56. NAC has a protective effect against radiation induced DNA damage and hepatic toxicity in rats.
57. NAC protects against sodium fluoride-induced blood oxidative stress in mice.
58. NAC slows hematopoietic stem cell aging in a mouse model of dyskeratosis congenita.
59. Oral N-acetylcysteine attenuates lung damage in smoking-induced COPD in rats.*

On 6/19/2015 Stephen said...

Felling Great!!!
Been taking NAC capsules for a few days now and I've been waking up feeling great! I also recently got a vitamin A peel on my face and i swear this is the best I've ever looked.

Thanks Bulk Supplements! Always quality product and fast shipping.*

On 6/16/2015 Chris said...

helps boost glutathione
NAC is the primary precursor of glutathione, the master antioxidant. this product really helps my body detox and boosts cellular energy levels, highly recommended.*

On 5/31/2015 Evan said...

Great for liver support
This item shipped super fast in clean foil packaging. NAC is great for maintaining liver health while using bodybuilding supplements. You can buy it here for way less than other places. High quality NAC! Thank you!*

On 5/12/2015 Benzo said...

nac is forsure a need for anybody who drinks. but alone is just as good almost like an antibiotic*

On 4/23/2015 tim said...

Trying it for now.....
I take many different supps, some for working out, most for health. Even though I take a few different antioxidents, I wanted to add NAC for the express purpose of helping glutethione synthesis. Probably won't feel a whole lot, but if there are no side effects, I'll keep it in my regime. I do order about 5 different supps from Bulk Supps and have no problems.*

On 4/22/2015 Paul said...

Excellent NAC
I am very satisfied with BulkSupplements: quality products, great prices and fast delivery. The NAC powder is quite pungent because it is the real deal. NAC has many benefits, which you are probably already aware of if you are considering purchase. BulkSupplements is the best vendor - go ahead and Add to Cart.*

On 4/6/2015 Joseph said...

boosts glutathione
NAC is one of the best things to help boost glutathione, which is essential for long-term health. this product is great because it's excipient-free allows for scalable dosing and much more inexpensive in bulk. *

On 3/21/2015 Kevin said...

Time from order to delivery was very quick, 2-3 days. Product is as previously reviewed, granular and a bit stinky, but I still am able swallow a 1/4 teaspoon a couple of times a day. I am less sore and achy in the morning and throughout the day. It also seems to brighten my outlook a little. Will reorder.*

On 3/18/2015 Stephen said...

I havent had bloods done yet after taking this for elevated lizer enzymes. (Runs in the family) Yet i feel great already. I have now just bought my second bag to run all year round. Highly recomended product with superior quality!*

On 2/22/2015 Adam said...

Helps lungs
I got this for my husband's lung challenges this winter. He is getting results with it, especially when combined with Alpha Lipoic Acid. I will be keeping this on hand at all times!*

On 2/11/2015 Sheila said...

Great for the Lungs!
I wanted to add NAC to my arsenal of products to help with lung issues. I am very pleased with the results, and will be sure to have plenty of this on hand. Thank you for a quality product that is filler free!*

On 12/28/2014 Sheila said...

N-Acetyl L-Cysteine (NAC) - 1kg Pure Powder
Good price, good product, packaged well. Appreciated the zip lock re-closure on the bag. Slight negative odor upon opening, doesn't create any bad taste in the product.*

On 12/13/2014 Paul said...

Total body protection.
N-Acetyl L-Cysteine is one of the most all around important supplements money can buy. NAC helps with everything from drug addiction to OCD to liver toxicity. It's like wear body armor internally. It protects your organs from so many different things it's hard to believe that NAC is real.

Mixing NAC in my protein shake is how I take it. No problems mixing it and the taste is sour but not overwhelming. NAC is a supplement that I'd recommend to anyone looking to improve overall health and longevity. Learn more about NAC here:*

On 10/12/2014 James said...

Excellent product, beat the competitors
I just started taking NAC and can feel the difference in energy already. I put in capsule form and it also seems like I'm not as anxious.*

On 10/7/2014 curtis said...

Very professional company with good selection of products
I have been using NAC and L-citrulline for a while. I ordered bulk NAC as an addendum to my supplements of amino acids. I use them as an aid in type 2 Diabetes and Hypertension for CKF. There also has been a reduction in both my systolic and diastolic blood pressure. From my recent blood panel draws, my Creatinine has lowered and my GFR has risen.

This company beat their competition in both price and shipping. They are clearly a professional company with service in mind.*

On 10/7/2014 James said...

My son's neurologist prescribed this to help him reduce ADHS medications.
This is a very high quality product with no fillers..I find all bulksupplemets to be of high quality.*

On 9/26/2014 Charis said...

This is great!
I can tell a good difference in energy and sense of well being when I take this. I put it in my energy drink and it taste good to me. I wouldn't want to live without this one. Thanks Bulk Supplements!!!!

On 8/18/2014 Tootsie said...

Great Product To Boost Your Immune System & Overall Well-Being!
I have been taking NAC since 2011 and I rarely fall sick since. If you are looking for a natural supplement that will boost your immune system and overall well-being, I strongly recommend to this great product to you.

As always, I am extremely happy with my purchase with because the Customer Service Team is truly professional & helpful. From my personal experience, all products quality is of the highest standards. Plus, I do not have to wait long for all my orders to arrive, thanks to their super-fast shipping!*

On 8/12/2014 Ashleigh said...

The NAC from Bulk Supplements has been fine--dissolves in water, tastes OK, and seems to be efficacious.*

On 7/15/2014 JAMES said...

anxiety melts away
I use NAC mostly to help with anxiety. It works amazingly. Bulk Supplements provides the best quality and I like the resealable pouch it comes in. Takes a while to get used to the taste and smell though.*

On 7/9/2014 Anika said...

NAC The Mucus Fighter!
I started using N-acetyl L-cysteine in 2008 for inflammation of my lungs, which kept coming back. I read about N-A-C, and started taking it. No more inflammation and no more prednisone and huge doctors fees. It is so nice to take a pure product with such high quality plus low price. Thanks BULK SUPPLEMENTS, please keep your high standards for all of your products. We need less capsules in our systems. *

On 5/26/2014 Dorene said...

Histamine Stopper
I have been using Quercetin for years to treat my systemic allergies. It is nice to find and use a product that does not have fillers and capsules, plus it has no taste. It does what it is suppose to do for me! BULK SUPPLEMENTS has done it again, provided a great product at a nice price. *

On 5/26/2014 Dorene said...

N-Acetyl L-Cysteine (NAC) is very Potent
I am not someone who is quick to give credit to any particular supplement because I drain myself in vitamins and minerals thereby making sure that I get all the 90 Essential nutrients necessary for good health.

I have gotten a very tremendous benefit with applying NAC topically to my razor bumps on my scalp. I have been dealing with these razor bumps for almost 15 years. When I started applying NAC to these bumps, most of these bumps disapperared within one week. For the first time since I had this condition, I can confidently tell you that I am almost healed of this unsightly skin condition.

I thank God for Bulk Supplement's NAC product.*

On 5/7/2014 OKECHUKWU said...

Good addition
This is a good addition to my supplements. I should take it because I was diagnosed with MS. It is clean and easy to take.*

On 4/16/2014 Patricia said...

best product at the best price
Shipped quicker than I thought. This product is exactly what we were looking for and at the best price. Company is legit and secure. *

On 3/3/2014 Tina said...

best price around
Best price I found after doing much research. I also researched the company and they appear to be the best and very secure.*

On 3/3/2014 Tina said...

N-Acetyl L-Cysteine
I am definitely starting to feel the effects of this supplement. I am using this for my irritating skin picking and compulsive behaviors and I'm finally starting to feel less anxious and a reduction in my compulsive tendencies. This is very easy to ingest and the price is amazing! This is definitely the place to go for any type of supplements. *

On 1/20/2014 Chris said...

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Product Questions

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Is this vegetarian? What is the source of the ingredient?
Since the 1kg option's sold out (I asked about it with no answer), do I have to order 1kg of NAC from your amazon store? It's available there with free shipping (no coupon code necessary).