Not trolling here either but there is nothing wrong with yohimbine of sibutramine (banned ingredients in Oxyelite.) Remember Canada is the place where they banned Ephedra because a high school wrestled died after taking it and cooking himself in a sauna trying to cut weight. It is a stimulant, so it's going to have desires stimulant effects to your sympathetic nervous system, which for a minority of uses will f*** their hearts up, same as caffeine, or the Adderall they feed their kids.
Key point here being that the negative sides are an exception to proper use of the stimulant.
but by not using any of it i avoid all of the risks and i'm still lean because i don't eat like a pig