Yes I have, I also did a bottle of No2 also, neither of them did anything, except make my wallet lose weight. Nitric oxide supplements are good in theory, but apparently has to short a half life in the body to do much good.
Really sux, I was so jacked up after i read the No2 book about it`s effects and benefits, I mean the guy who basically brought us creatine was bringing this...but it`s a bust of a supplement. a few people I know has no positive effect as well.