Okay, so I read about l-citrulline last year supposed to help with PEM (there are some posts on the board here about this). Because it raises NO and arginine, it is supposed to lower BP - however, it noticeably raises mine by 10 to 20 points. Any ideas as to why this is happening? I'd like to keep taking it, it seems to perk me up some. My BP was not low before, it was always 120-125. Now it's going up to 140 and even higher .... and it hasn't helped with PEM yet - it's a puzzlement!