My Cart

0 items $0.00

You have no items in your shopping cart.

Free Shipping Orders $49 or More*

*USA including AK & HI, $49 minimum order after discounts are applied.

Unbeatable Prices Huge Product Selection, Great Service,

DL-Phenylalanine Powder

* Required Fields

In stock

Price From: FROM $12.96

Ships tomorrow if ordered in the next 13 hours and 56 minutes!

DL-Phenylalanine Powder

Key Features

  • Essential amino acid
  • Promotes mental wellness
  • Joint health
  • Taste

  • Mixability

Phenylalanine is an amino acid ranked among the essential amino acids needed to sustain life.


Serving Size & Timing

It is suggested that DL-Phenylalanine be consumed in servings of 375mg (roughly 1/4 tsp), to be taken three to four times per day, depending on intended effect. As a caution, it should be noted that sometimes it can take upwards of four weeks for the effects of DLPA to be noticeable.

Nutritional Information

Supplement Facts

Serving size: 375 milligrams
Serving per container: *
Amount Per Serving % Daily Value**
DL-Phynylalanine (DLPA)... 375mg *
* Daily Value not established.
** Based on 2,000 calorie diet


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

As a dietary supplement, take 375mg (1/4 tsp) three or four times daily, or as directed by physician. Individual needs vary.

US Standard Measuring Spoons
Spoon Size(level) milligrams
1/4 teaspoon 374
1/2 teaspoon 749
1 teaspoon 1498



There are no fillers of any kind present in this supplement. DL-Phenylalanine is a mixture of equal parts D and L forms of Phenylalanine, the D form being synthetically crafted in laboratory conditions, and the L form found in various proteins. Phenylalanine is actually one of very few amino acids that can actually be used while in its D form. Since DL-Phenylalanine is made up of 50/50 D and L parts, it has effects of both.


Since this supplement has the potential to have serious effects on neurotransmitters and emotional responses in the brain, it should not be taken by anyone that is already being medicated for psychiatric conditions such as depression. Taking this along with antidepressants could elevate the blood pressure to very dangerous and possibly fatal heights. There is also a rare condition called Phenylketonuria, which causes the body to improperly metabolize Phenylalanine. If you have been diagnosed with this disease, do not take this product.

Ignoring the suggested serving size of DL-Phenylalanine or taking too much of it over long periods can cause adverse side effects such as headache, heartburn, heightened blood pressure, mood swings, anger agitation, nausea, insomnia, serious nerve damage, and problems digesting Tyrosine. Anyone that routinely experiences high blood pressure or serious headaches like migraines should not take this supplement or consume foods that are high in Phenylalanine content. This product should also not be supplemented by women who are pregnant or nursing and those with melanoma.


This product dissolves slowly in water. The hotter the water, the more easily this substance dissolves. It has no discernible taste and should be mixed with water or juice before consumption.

Customer Reviews

Better mood and sleep
I have always had terrible headaches and chronic muscular pain when my sleep is cut by only an hour. Being an insomniac I spend frequent days in pain. I have added this to my nighttime routine and it is the last thing I take before I go to bed. So far it is really helping me sleep deeper, although I still wake after 4 hours needing a snack, I have blood sugar issues so there are other problems not to do with weight management (I weigh 130 pounds, 5ft 3) But sleeping deeper and taking less time to fall back asleep is a good improvement. The pain is still there if I have a bad night sleep, but my results are not conclusive as I am still experimenting with dosages and times to take. But so far so good. I will try including increasing L Phenylalamine on top of what I take next.*

On 12/12/2016 Joanne said...

DL-Phenylalanine Powder
This is my first time ordering DL-Phenylalanine Powder from BS. I will need to give it more time to offer the effects of my use, but so far it's good and I have no complaints. I always find products that are reasonably priced, pure and unadulterated with fillers and such. I am always amazed at just how fast I receive my orders. You can't put a price on awesome customer service BS provides. *

On 10/21/2016 Marietha said...

Good product
It seems to help me like always but it seemed to have a weird taste this time .*

On 9/6/2016 Dave said...

I've had some interesting calming/spiritual experiences using this before bed. i like to stock up big on this one.. fast service..*

On 7/11/2016 Jeff said...

Phenylalanine is an amino acid precursor for neurotransmitters which supports brain health. Bulk Supplement provides a potent pure product that I take daily about thirty minutes before my workout is scheduled to end.

Some performance specialist recommend taking it then because it helps to increase your neurotransmitters dramatically at that time. I can feel a real difference in my mood when taking it. Will purchase again.

Great product!*

On 5/4/2016 l said...

Great product, great company!!!!
I prefer to buy in bulk, no fillers form and reasonably priced and bulksupplements can provide all that. DL-Phenylalanine helps you to produce endorphins and is a great caffeine alternative. No side effects for me. Very happy to find it.*

On 4/2/2016 Natalia said...

A company with fast shipping and a great selection of products. I have ordered several products from this company and I am always pleased with the quality of the product as well as the pricing. It is much better to order from bulk supplements than to go to a GNC or similar store. I highly recommend anyone giving their products a try. One benefit is you can find many powders instead of the pills, which I much prefer.*

On 2/28/2016 Donna said...

DL-Phenylalanine 100g
Great high quality product. Great price. Fast shipping. Looking forward to buying in bulk.*

On 2/2/2016 Steve said...

Love my DL-Phenylalanine
Not only did I receive this product in remarkable time it was fast acting. I have a friend that is a pharmacist and was able to test my purchase and it is Legit!! I will be purchasing all my supplements from you guys from now on! thank you so much for a good quality product as well as excellent customer service! *

On 6/11/2015 Matthew said...

First order with Bulk Supplements, I am very happy I found them.
I recently was under a ton of stress. Unlucky for me, I know from experience, too much stress causes depression in me. YAY!!! I absolutely hate taking meds for it. I took one once and it made it ten times worse. I know that it's tricky when it comes finding out which meds work best for you. I just personally would rather try anything before resorting to taking meds. Boy have I done a ton of research, and read reviews! All I can say is that I bought DL-Phenylalanine and have been taking for about a week, and I'm feeling SO MUCH BETTER! Of course I am also taking magnesium as well with it. It could be a combination of both. I am so grateful to have found it. I don't think it's a placebo. I know it says it can take upwards of four weeks for the effects. All I know is I am not at all in the same place as I was before ordering it. Thank God! Just what I needed. I measure out 1/4 teaspoon and take it 30 minutes before meals. I take it first thing in the morning. I put it under my tongue and let it sit there for a couple seconds if I can, and chase it down with water. I actually don't mind the taste at all. It has bitter/sweet taste. I take it 3, sometimes 4 times a day. I bought the 500 gram bag, and it will last me a while. I haven't had issues with the bag as others who have reviewed on google. No complaints at all. Bulk Supplements definitely has my business. It shipped right away, and I was pleased when I tracked it, it was upgraded to priority and they had put insurance on it of $100. Be careful on dosage, make sure you measure correctly. BE aware when you open the bag, the powder is fine and it can get all over the place. As someone else mentioned, It's nice to be able to adjust my dose.*

On 6/9/2015 Linda said...

Good quality & price = Good value
I ordered DLPA to help relieve joint/muscle pain, it has helped.
The powder is very fine, dry and easy to work with.
It's nice to be able to adjust my dose (read and follow dosing info. on the package and this website) if I need to.
The DLPA is shipped in a heavy foil resealable package that should last.
I have ordered twice from I am very happy with the quality of all the supplements I have tried. Shipping was fast 2 days to east coast.*

On 1/7/2015 jay said...

Satisfied so far!
I ordered the DL-Phenylalanine along with 10 other products on Sunday the 13th and got them yesterday, Tuesday the 13th, which is very quick and impressive. I just tried the products today so, I'll need a few days to feel the full affects. I've been working out and buying supplements for 22 years and I know good quality products when I see them and Bulk Supplements has the best quality products I've ever seen. Very pure, fine and concentrated powders that are easy to mix. If I would have bought the same amount of name brand products, it would of cost me a fortune. Very pleased so far and so glad I found Bulk Supplements! I have many friends that buy supplements and I will definitely send them to Bulk Supplements.*

On 9/17/2014 Jeremy said...

Good product!
Well packaged in convenient, light proof, resealable packages. Product helps to alleviate chronic pain from fibromyalgia. Price is excellent and shipping is reasonable.

Good instructions on the website, make sure to read these, including how best to dissolve the powder.


On 2/19/2014 Hugh said...

Only registered users can write reviews. Please, log in or register

California residents: Click here for Proposition 65 warning.