I don't believe CLEN to be a steroid, I tried Ventipulmin a while ago and it wasn't anything fantastic....as far as I know it doesn't have the same effects as T3, but than again I wouldn't touch anything that ****s with my thyroid with a ten foot pole....BUT is this true? I've heard that CLEN for the first 21 days or so is actually ANABOLIC??!?! Do you guys know anything about that?