L-Arginine is a semi-essential amino acid that helps make nitric oxide, which widens blood vessels and improves blood flow. It also plays a role in building proteins, healing wounds, immune response, and hormone release. People use it to boost exercise performance, support heart health, and help with erectile dysfunction. Common supplement doses are 2–6 grams per day; higher amounts should only be used short-term with a doctor’s guidance. Possible side effects include stomach upset, headache, and blood pressure changes. It can interact with nitrates, blood pressure drugs, and some supplements. Avoid or use cautiously if you have herpes (it may trigger outbreaks), kidney problems, or unstable heart disease. Check with your healthcare provider before starting.
L-Arginine is a semi-essential amino acid that helps make nitric oxide, which widens blood vessels and improves blood flow. It also plays a role in building proteins, healing wounds, immune response, and hormone release. People use it to boost exercise performance, support heart health, and help with erectile dysfunction. Common supplement doses are 2–6 grams per day; higher amounts should only be used short-term with a doctor’s guidance. Possible side effects include stomach upset, headache, and blood pressure changes. It can interact with nitrates, blood pressure drugs, and some supplements. Avoid or use cautiously if you have herpes (it may trigger outbreaks), kidney problems, or unstable heart disease. Check with your healthcare provider before starting.