L-arginine is a semi-essential or conditionally essential amino acid found in foods (meat, poultry, fish, dairy, eggs, nuts, seeds) is present. Adults can make L-arginine from the amino acids ornithine, glutamine, glutamic acid and proline; Nevertheless, the amount of arginine in nutritional strongly contributes to the total arginine facility.
For teens L-arginine is an essential amino acid because the biosynthesis is still too low. Under different circumstances, the biosynthesis of L-arginine in adults are insufficient to meet the needs, for example, when recovery from illness. In such cases, supplementation with L-arginine health benefit.
Be careful with the use of L-arginine during pregnancy and lactation because of the
lack of safety data. Be cautious with L-arginine supplementation with active herpes simplex infection. Contraindications for the use of L-arginine are severe liver and kidney disease and cancer.