L-Arginine Supplementation

L-Arginine is an amino acid critical for nitric oxide production, which is important for vascular function and circulation enhancement, thus supporting sexual health. Studies suggest short-term supplementation can improve vascular function and mitigate erectile dysfunction symptoms (Refs: 4, 15, 17). However, caution is advised as prolonged use may have adverse effects, including increased mortality in aging populations (Ref: 2). Although direct percentage data on libido improvements is limited in humans, animal studies indicate around a 40% increase in reproductive metrics (Ref: 7).