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Source Naturals

L-Ornithine Powder, 3.53 oz (100 g)

4.8 · 857 reviews
1,854 ₽

Dietary Supplement Free-Form Suitable For Vegetarians L-Ornithine, a free-form crystalline amino acid, is a precursor of arginine, which is necessary for the synthesis of creatine, an important energy provider for muscles. In addition, L-Ornithine is a key compound in the urea cycle, one of the body's main processes for eliminating ammonia.

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Dietary Supplement Free-Form Suitable For Vegetarians L-Ornithine, a free-form crystalline amino acid, is a precursor of arginine, which is necessary for the synthesis of creatine, an important energy provider for muscles. In addition, L-Ornithine is a key compound in the urea cycle, one of the body's main processes for eliminating ammonia.

Customer reviews

5.0
verified purchase
Mops Ammonia And Damps Glutamate

Great for feeling of wellbeing and reducing overstimulation of any sorts. Helpful for sleep. Research has proven that ornithine reduces hostility and anxiety associated with hangovers. Very good for ammonia.

8/10/2019
5.0
verified purchase

I took this L-Ornithine Powder with Gaba before bedtime, and I was able to sleep so well. Since I'm not training, I'm taking less then the suggested amount, and still it works for me.

12/25/2024
5.0
verified purchase
Slept all night

Got this in conjunction with doing a gall bladder flush and I slept well, nice that it's a powder, saves a bundle, and it tastes fine.

4/10/2011
5.0
verified purchase
ornithine

I believe I did notice less fatigue when doing HIIT using this, it is supposed to help metabolize ammonia which would decrease the burning sensation due to lactic acid build up. I have only taken it once thus far so cannot say for sure, but good quantity and price

4/10/2026
5.0
verified purchase
Source Naturals L-Ornithine Powder

Source Naturals L-Ornithine Powder is a high quality product made with clean ingredients. The package is convenient, and the powder size is generous for long-term use. Its simple composition supports the body during training, helping improve energy levels and support muscule recovery. As an amino acid related to protein metabolism, it fits well into an active diet. The taste is mild and easy to mix, making it a practical choice. Overall, it offers great benefits for fitness and performance.

4/8/2026
5.0
verified purchase
Love it

This is the only product available in such composition.. very beneficial for digestion and those who train a lot and consume a lot of protein

4/2/2026
5.0
verified purchase
Excelent!

Good quality. Easy to take. Put it in my shake after training.

3/12/2026
5.0
verified purchase

Source Naturals L-Ornithine Powder is a good-quality supplement that mixes easily and is simple to use. It’s a convenient option for supporting recovery, energy levels, and overall wellness.

2/6/2026
5.0
verified purchase
So happy with the result so far, I bought it for my son as he has compromised liver and kidney functions so he always has elevated ammonia levels

I find it helpful in reducing ammonia levels as well as it's calming effect . It's tasteless so I add it to some juice. My son's ammonia symptoms have improved significantly

1/22/2026
5.0
verified purchase

Good quality, easy to drink has no secific smell or taste. Good quality halal ingredients

9/15/2025