L-ornithine 500mg - 120 capsules

L-ornithine: amino acid for physical performance, muscle building and fat reduction

Within the liver metabolism, L-ornithine is of central importance for the detoxification of the body. The amino acid is involved in the formation of urea and is needed to remove excess ammoniac from the liver.

L-ornithine is of great importance for the building processes of the muscles and the reduction of fats. That is why it is important during diets and exercising. It is able to prevent the ammoniac level in the blood from rising during exertion and prevents weariness.

Japanese researchers examined the influence of L-ornithine on the physical exhaustion. During this trial, 17 healthy test persons either received 2 grams of L-ornithine for seven days and 6 grams of L-ornithine on the eighth day or a placebo, followed by a physically exhausting bicycle ergometer training. The test persons, who had received ornithine, reported significantly less tiredness than the test persons, who had received a placebo. Furthermore, the female test persons showed a higher physical performance on the bicycle ergometer.
(Source: Sugino T et al.: L-ornithine supplementation attenuates physical fatigue in healthy volunteers by modulating lipid and amino acid metabolism; Nutr. Res. 2008 Nov; 28(11): 734-43)

L-ornithine is also an important factor for the release of growth hormones. This is why it is a popular anti-aging product, which helps to provide a youthful appearance. It is able to activate the immune system and to support the defence processes against pathogenic germs, because it stimulates the formation of white blood cells.

Furthermore, L-ornithine has the potential to reduce stress and to improve the sleep quality, which was examined in a randomised double-blind study with participants who had been suffering from mild stress and tiredness. The test persons were divided into two groups. One group consumed 400mg L-ornithine daily; the other one received a placebo. The serum levels of cortisol (stress hormone) and dehydroepiandrosteronsulphate (DHEAS, adrenal cortex androgen) of all test persons were analysed. Additionally, mood and sleep quality were determined during the study. The result of the eight-week study showed significantly reduced cortisol and DHEAS levels. The feeling of anger decreased, whereas the sleep quality improved.
(Source: Mika Miyake et al., Randomized controlled trial of the effects of L-ornithine on stress markers and sleep quality in healthy workers. (Nutrition Journal 13:53,2014, doi: 10.11.1186/1475-2891-13-53.)

Vegetarians and vegans should ensure an adequate supply with L-ornithine, because the amino acid occurs primarily in animal-based food. Plant-based foods contain only traces of L-ornithine.

  • is able to promote the muscle building and the reduction of fat
  • can prevent the increase of ammonia in the blood during exertion and tiredness
  • supports the liver by neutralising ammonia
  • anti-aging tip

Combination tip: combine L-ornithine with L-arginine for more virility

Content: 120 capsules

Recommended intake:
Adults 4 capsules daily in divided doses with meals and plenty of water.

Do not exceed the indicated recommended daily dosage. Food supplements are not a substitute for a balanced and varied diet. Keep out of the reach of small children.

Four capsules contain:
L-ornithine 2000mg

Ingredients: L-ornithine, glazing agent hydroxypropylmethylcellulose (capsule), rice starch, bulking agent microcrystalline cellulose, anti-caking agent magnesium salts of fatty acids

Made in Germany


capsule size  
Length 22mm
Width 7mm

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L-ornithine 500mg - 120 capsules

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bulk discount

Quantity unit price per 100 gram
1-1 24,95 €* 32,83 €*
2-3 23,95 €* 31,51 €*
4-5 22,95 €* 30,20 €*
>= 6 21,95 €* 28,88 €*