
Ornithine is a non-essential amino acid that the body can synthesize on its own. It plays a crucial role in the urea cycle, which is the process of removing toxic ammonia from the body. It also contributes to the production of other amino acids such as arginine, citrulline, and glutamine.
Ornithine helps eliminate ammonia that accumulates in muscles during exercise, which may help reduce fatigue and increase endurance.
Ornithine plays a role in stimulating the secretion of growth hormone, which may promote muscle building.
Ornithine aids in the elimination of ammonia and other toxins through the urea cycle, potentially benefiting liver health.
Some research suggests that Ornithine may help reduce stress and improve sleep quality.

A 2008 study by Sugino et al. found that consuming 2,000 mg of Ornithine daily for 7 days helped reduce fatigue in athletes who train regularly.
Research by Demura et al. in 2010 indicated that Ornithine supplementation before continuous exercise helped reduce blood ammonia levels and fatigue.
A 2014 study by Miyake et al. found that consuming 400 mg of Ornithine daily for 8 weeks increased muscle strength in men who exercise regularly.
Although Ornithine is relatively safe when used in recommended amounts, it may cause side effects such as nausea, diarrhea, or stomach pain in some individuals. Those with underlying health conditions or taking medications should consult a doctor or specialist before using Ornithine.
Ornithine is an amino acid with potential to enhance athletic performance and overall health, especially in terms of reducing fatigue and supporting muscle growth. If you want to supplement Ornithine, choose to buy from official stores to prevent counterfeits and get full health benefits.
References
Sugino, T., et al. (2008). Journal of Nutritional Science and Vitaminology, 54(4), 315-320.
Demura, S., et al. (2010). European Journal of Clinical Nutrition, 64(10), 1166-1171.
Miyake, M., et al. (2014). Nutrition Research, 34(11), 961-968.