Do studies support the claimed benefits of L-arginine?

Research is ongoing to test whether L-arginine works as claimed to help treat various health conditons. Studies support that L-arginine is effective in testing growth hormone levels and treating some urea synthesis disorders. Evidence also suggests that L-arginine can help in cases of coronary artery disease, angina, heart failure, critical illness, migraines, and claudication (cramping pain caused by poor circulation from peripheral vascular diseases). However, there is not enough research to support other proposed uses of L-arginine.

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