So I've found several warnings about the cardiovascular potential effects of L-Arginine, and warnings about interactions with ED and blood pressure meds. Does anyone have any experience with effects, or lack of to share? How serious are these warnings? Does L-Arginine have a near certain effect on cardiovascular function? Any effect on heart rate? I've had Arrythmia issues and just concerned. I'm somewhat doubtful my Dr would know off-hand about L-Arginine.