arginine side effects
L Arginine Side Effects Although there are few documented side effects of L-arginine, users of arginine should be aware of some of the possible side effects. Some arginine side effects include: 1  breathing problems. 2  swelling in the legs. 3  headaches. 4  low blood pressure. 5  diarrhea. 6  chest pain. 7  nausea, bloating. 8  taking arginine may also increase the amount of Herpes simples (cold sore) outbreaks.
Although L-arginine may be safe when taken in the short-term, it can cause a number of side effects (including indigestion, nausea, headache, bloating, diarrhea, gout, blood abnormalities, allergies, airway inflammation, worsening of asthma, and low blood pressure).