L-Citrulline is an underestimated supplement, superior to L-Arginine for improving blood circulation, optimizing physical performance, and supporting erectile function.

noli's read

L-Citrulline is indeed more effective than L-Arginine for increasing blood L-Arginine levels because it is better absorbed (meta-analysis, Journal of Cachexia, Sarcopenia and Muscle). Science supports its role in improving vasodilation, which may moderately promote endurance and muscle recovery (meta-analysis, Sports Medicine). Regarding erectile function, clinical studies (RCT) suggest real efficacy for mild disorders due to increased blood flow, although the effect is far from guaranteed for everyone. The idea that it is a miracle solution is exaggerated by the community, which often omits mentioning digestive side effects, such as heartburn, well-documented in some users. Fears related to shingles or cold sores remain anecdotal, without robust clinical evidence directly linking supplementation to these viral reactivations. The community largely agrees on the utility of the product, although debates remain regarding its real importance compared to other natural alternatives such as beetroot.

the sources

1. 1r/Supplements