Citruline is a nonessential amino acid that's also found in supplements and foods like watermelon, pumpkin, and cucumber. Citruline has been studied for whether it improves athletic performance, blood ...
Some people claim they use L-citrulline supplements for ED and see results. But has research confirmed L-citrulline benefits for ED? And if so, how long does it take for L-citrulline to work for ED?