There doesn’t seem to be any negative side effects (aside from some headaches at first due to increased blood pressure) it is even used to treat congestive heart failure.I get this 5 gram powder for 30$ at gnc which has 30 servings.well worth it I think.5 grams keeps my flaccid size almost the same as erect.L-Citruline seems interesting. L-Ornithine I found out works with L-Arginine And enhances it’s effect I am going to look for some tomorrow.
Anyhow I find just the general feeling of health that comes with L-Arginine to be well worth it.