Re: Nitric Oxide recommendations/opinions? ive used black powder by mri , its good i used it with a creatine matrix , but dont expect ti to be magic it will pump u up but also screw with ur stomach and i know guys who got migraines possibly from the high caffiene, but if ur just looking for something to make u more vascular and energize ur routine its not a bad way to go , u dotn have to worry about side affects |