L-Arginine HCl
an amino acid salt

The seller publishes a photograph for this ingredient.
- An amino acid the body converts to nitric oxide, which widens blood vessels. This is the plausible mechanism the whole category gestures at.
- It is dose-dependent, and the doses are large: trials use 3,000 to 6,000 mg a day, which is three to six grams.
- This label has 50 mg. As a hydrochloride salt, that is roughly 40 mg of arginine itself.
- It is listed first on the panel, which on an itemised label means nothing about rank — the order here is not by weight.
- Nothing about 50 mg of arginine is harmful. Nothing about it is a dose, either.
Watch for: Lowers blood pressure at gram doses, which matters if you take nitrates. Not a concern at this weight. Source: Memorial Sloan Kettering Cancer Center, “Arginine (About Herbs)”.








