This Iranian study aimed to investigate the effect of l-arginine supplementation on various heart functions and the quality of life in 50 patients with heart failure. During 10 weeks, the patients received either a supplement containing 3 g l-arginine per day or a placebo. Heart function, blood pressure, and quality of life were assessed before and after the supplementation period. The study results showed that the used amount of l-arginine supplementation for 10 weeks significantly improved various heart functions, blood pressure, and quality of life in these patients, compared to patients in the placebo group. Further details can be found in the study.


Salmani et al.


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