Arginine — answers to L-arginine
Hasn’t appeared in a scanned product yet.
Talk to your doctor or pharmacist.
Roll Call does not check drug interactions or assess personal safety.
A semi-essential amino acid the body uses to make nitric oxide, a molecule involved in relaxing blood vessels. It occurs in protein-rich foods and is also sold as an isolated supplement.
Why it’s used
Taken to support blood flow, exercise performance, or cardiovascular measures such as blood pressure.
What the evidence says
Some clinical trials report modest reductions in blood pressure or improvements in blood-flow-related measures with supplemental arginine, but results across studies are inconsistent, and benefits for athletic performance in healthy people are not well supported by controlled trials. There is no NIH ODS fact sheet specific to arginine; findings summarized by other health databases describe the evidence as mixed.
Dose studied
3–9 g — daily doses used in trials examining blood pressure and blood flow measures.
Context
Trials examining cardiovascular measures have used daily doses commonly in the range of a few grams up to around 9 grams, taken over weeks, with effect sizes varying by population studied (e.g., people with existing blood pressure issues versus healthy adults).
Educational information, not medical or safety advice. Consult a professional for allergies or medical concerns.