Sorry for the spelling mistakes in my earlier post...
I had the same experience with Arginine. I will never use it again either. I'm 99% sure that I won't touch this new pill Gene is commenting on, either. I get results from citrulline/malate 2:1. Although, I can't over-do it with citrulline, either. 5g or so seems to be my limit (in 2 doses, mixed in yogurt or blended with food, not dissolved in water).
I can't imagine this pill working any better...but if it sweeps the nation with favorable reviews from folks that couldn't tolerate the previous version, I suppose I'll have to try it.
Yes, I also found better success when I alternated dosing or mixing things up. I also take a few other things (HMB, carnitine fumarate, ubiquinol....) and I found out that splitting the stack in half seemed to work better for me, including the ED drugs. So, if my stack were to include a dozen different supps/drugs, I'll take half one day, the other half the next. Taking everything multiple times a day was overkill.