L-Ornithine: benefits, dosage, contraindications

L-Ornithine is a non-essential amino acid, which means it does not need to be obtained from the diet because the body can synthesize it. It plays a key role in the urea cycle, where it helps remove excess nitrogen during the breakdown of arginine by the enzyme arginase. During this cycle, ornithine is recycled into citrulline and eventually into arginine, thereby facilitating the processing of nitrogenous waste. Although ornithine does not directly participate in protein synthesis, it influences several other important biological processes. Research has suggested that ornithine may stimulate growth hormone production via a mechanism that could potentially help increase muscle mass. The use of ornithine as a supplement is common among athletes and active individuals seeking to improve their physical performance. Ornithine is thought to help increase arginine levels, an amino acid that supports endurance and muscle recovery.