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L-Ornithine a-ketoglutarate OKG Powder

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Price From: FROM $78.96

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L-Ornithine a-ketoglutarate OKG Powder


  • Pure powder
  • Collagen production
  • Athletic support
  • Taste

  • Mixability

L-Ornithine Alpha-Ketoglutarate (OKG) combines alpha-ketoglutaric acid with ornithine. The compound is believed to promote mental wellness, collagen production and athletic support.


Serving Size & Timing

This supplement should be taken in servings of 1000 to 2000mg per day. If trying to take more than recommended, it is best to increase dosage slowly and incrementally to avoid any negative side effects.

Nutritional Information

Supplement Facts

Serving size: 2000 milligrams
Serving per container: *
Amount Per Serving % Daily Value**
L-Ornithine Alpha-Ketoglutarate 2000mg *
* Daily Value not established.
** Based on 2,000 calorie diet


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

As a dietary supplement, take 1000mg (3/4 tsp) to 2000mg (scant 1/2 tbsp) daily, or as directed by physician.

US Standard Measuring Spoons
Spoon Size(level) milligrams
1/4 teaspoon 393
1/2 teaspoon 786
1 teaspoon 1572



This supplement contains no fillers of any kind.


As long as suggested serving sizes are adhered to, risks of negative side effects with OKG are low. However, taking more than recommended can result in nausea and other gastrointestinal discomforts. Children, women who are nursing or pregnant and those who have been diagnosed with liver or kidney disease should not take this supplement without first consulting a doctor.


This supplement has a sour flavor and dissolves easily in water. It can be mixed with a citrus juice for best effects, and it should be stored in an area that is free from light, heat and moisture in order to retain effectiveness.

Taking Glutamine along with OKG can further reduce recovery time and muscle pain post-exercise.

California residents: Click here for Proposition 65 warning.

Customer Reviews

L-Ornithine a-ketoglutarate OKG - 100g Pure Powder
I am a very active 80 year old. I take a lot of supplements. I take OKG powder mixed with apple and grape juice, honey and vinegar. I believe this is helping to hold back muscle loss and help me stay strong. I believe the OKG is a tremendous help in this effort. *

On 4/22/2019 Charles said...

L-Ornithine a-ketoglutarate OKG
I just returned from vacation.

I worked 4 gm into my schedule on an empty stomach.

As per usual BS delivered the top quality powder.

Reduced blood ammonia with L-ornithine alpha-ketaglutarate aided longer workouts and quicker recovery with maybe a tiny edge in growth hormone.

A great value. *

On 8/4/2017 Danney said...

L-Ornithine a-ketoglutarate OKG Powder
I take this product throughout the day with the rest of my regimen in order to increase natural HGH levels, decrease toxins, and improve recovery. girlfriend takes it in the morning and at night because it makes her skin look amazing.*

On 4/18/2017 Jeff said...

Great source for a difficult to find supplet
As a pharmacist and sports nutrition coach, I have been looking for a reliable source of OKG for some time. The purity and integrity of this product is just what I've been looking for to incorporate into my formulations. Only complaint is the pouch the product comes in does not always seal.*

On 9/1/2016 James said...

OKG- So far OK
Definitely notice a difference in power output, not extreme but noticeable.*

On 8/18/2016 Nicholas said...

quality product
Fast shipping and excellent quality as always!*

On 8/16/2016 michael said...

OKG ~ AKA French Tickler
New to Bulk Suppluments, And am completely satisfied. Just started stacking with OKG and see and feel a difference in just a few days. This will be a repeat product in my arsenal of fitness products,,, *

On 8/14/2016 Timothy said...

L-Ornithine a-ketoglutarate OKG Powder
I'm just becoming familiar with the company and has some skepticism initially until I did more research. The packaging is straight forward and has all the supplement information on the front along with a few standard U.S. to metric conversions (very useful for me). It dissolves very well in water with little effort, and the taste is not that bad in comparison to other supplements (with in mind that all natural supplements were not necessarily formed for flavor)The one thing I favor predominately about this OKG is the fact that it's in powder form (as opposed to capsule or tablets) which makes staking exponentially easier. Unlike my previous way of take multiple tabs and capsules at the same time, in powder form I can now simply mix this and other powders in one shaker and drink it straight down. Another thing I like about this OKG is that it has no fillers, or binders and your getting just that one ingredient (my previous brand was bulky do to binders which made them very difficult to swallow). I'm also looking in to other products offered by Bulk based on my current experience (which was above my expectations) and I would highly recommend this OKG powder.*

On 10/2/2015 Joshua said...

Great product. Can definitely feel it during my workouts despite all the other supplements I am taking. It does everything that it says it does and it is has definitely earned its spot in my pre workout stack.*

On 7/17/2015 Nicholas said...

L-Ornithine a-ketoglutarate
This product mix with a few other supplements will have quick effects within a first hour. Good product, but I recommend double sealing the product after breaking the original seal.*

On 7/13/2015 alex said...

Great quality and price. on time delivery. The packaging is very good. I just wish he larger sizes were available at my time of ordering' Great company ave never been disappointed*

On 7/5/2015 Brett said...

Great quality and price. on time delivery. The packaging is very good. I just wish he larger sizes were available at my time of ordering' Great company ave never been disappointed*

On 7/5/2015 Brett said...

Very effective
Twenty years ago I used an OKG powder with good results in the gym and good general results. I decided to try it again. I found Bulk Supplements and am happy I did. At 62 years old I have experienced an improvement in my gym training and a general mood elevation in the rest of my life. I was also pleased with the very fast delivery of my orders. *

On 6/16/2015 OKG L-Ornithine Alpha-Ketoglutarate said...

Really great for recovery
In the last couples of weeks or so I have taken up crossfit and I must say OKG has benefited me by decreasing the amount of soreness after a hard session. I have also noticed I tend to wakeup in the morning with more energy and less anxiety than before I started taking the supplement. Could possibly be the result of extra gh release. It also mixes really well with anything. All in all, exceptional product! Keep it up !*

On 6/8/2015 Ryan said...

OKG for me
I recently ran out of the regular Ornithine powder and waited a couple of weeks just to see how my workouts went without it. I have been cutting calories to get lean and workouts were getting grueling.

Its been 10 days now and I do feel it helps with recovery but also I have gotten leaner by 1% body fat. So I have to say that its helping keep my muscle while in a deficit and lose fat at the same time. *

On 5/6/2015 Tom said...

I began using Arginine Base after reading Pearson and Shaw's book years ago. Later, I added OKG and had way better results. It also makes Arginine go down a little easier. It's more effective than L- Ornithine. I use Arginine and OKG as a GH releaser. I appreciate being able to purchase in bulk at a good price.*

On 4/21/2015 Harold said...

L-Ornithine a-ketoglutarate OKG Powder
this product was shipped very quickly, as i live on the East Coast FL. mixes very well. good product to stack with L- Arginine! thanks*

On 4/14/2015 larry said...

works well
this product smells nice like a candle store somewhat sour taste but blends well with drink mixes, for effect it does help release some gh from androgenic activity but mainly because of the way its composed, some of it turns into arginine upon breakdown and ornithine itself helps with this process to sum it up it helps quit well with any preworkout mix if you want something stronger than pure arginine for gh production.*

On 4/12/2015 hayden said...

I receive this product free with an order. I must say that I'm very happy with this supplement. It arrived as promised and good packaging. Been taking for a few days. No bad after taste and mixes well. I have a NEW supplement provider!*

On 9/13/2014 Susan said...

a Great Workout Aid
OKG's ability to scavenge blood and systemic ammonia is well documented. Coupled with alpha-ketaglutarate, this really helps increase productivity over long workouts, and ease recovery some, too.

Ornithine's effects on growth hormone secretion are sometimes disputed. My first hand experience is lean mass is easier to get and maintain when I am supplementing with OKG than without.

I use 3.5 grams slowly, over the course of my work out, on an empty stomach. This is a big dose, that I got to gradually. Test your own tolerance to avoid any 'unpleasant' effects.

OKG also has an 'underground' reputation for easing hangovers, but I wouldn't know...*

On 7/20/2014 Germain said...

Tough to find work out supplement
OKG's role in reducing blood and systemic ammonia is very well documented. Being paired with alpha-ketaglutarate only increases this activity. Longer workouts and quicker recovery are facilitated.

While the ornithine/growth hormone connection is disputed by some, I know for a fact that maintaining lean muscle mass is easier when I am supplementing with ornithine. I use 3.5 grams during my workout. This dose should be approached slowly, test your tolerance gradually.*

On 7/20/2014 Germain said...

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