Researchers suggest that people who are trying to build lean mass should take glutathione and L-citrulline supplements. Their suggestion comes after finding a positive association between these supplements and muscle strength.
In their study published in the Journal of the International Society of Sports Nutrition, the researchers recruited 75 resistant-trained men aged between 18 and 35. The participants were non-smokers, at a low risk for cardiovascular disease, and had not taken any nutritional supplements three months before the study.
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