There used to be fake and bootleg nolva and clomid around, but it's so available now you'd have to dealing with total dirt bags to get fake stuff. HCG is readily available and UG Arimidex is pretty cheap and it makes no sense to fake it when selling it legit is far more profitable. And the best PCT is OTC anyway . (at least in the States). So, there's really no reason to have any doubt.