It's toxicitiy far out weighs it's positive impact on your V02 max..

There are other alternatives or drugs that wouldn't be half as risky to use IMO.

If you do end up running this, I would HIGHLY advise you check your liver values and blood pressure on a regular basis. The use of Catepressan to avoid hypertensive conditions and liver-protectors such as UDCA, Liv52 would be wise options.