No, it's an anti-hypertension drug. Sounds like nasty stuff from what I read, although I'm [supposed to be] on a very small dose. Haven't actually downed any of it yet. Might not, either.
Quack says it it can reduce heart output and thus, performance on the bike. Needless to say, this does not thrill me, exactly. Just wondering if anyone has used it, and what effects they have noticed.