People actually see different effects pharma brands of the same stuff. This is probably my favorite topic, what the causes could be. Seems everyone has their favorite brand of certain drugs. The docs will say "there shouldn't be a difference," buy ime they don't definitively rule out differences at all. Sometimes it's claimed as probable placebo but there might be other explanations.
We have here on this forum 'experts' who will say their guru requires them to switch to Geno pens during prep or a "pharma brand" or nothing at all. Yes often it's probably the guru himself profiting from the sale but experienced guys really are claiming big differences. Compton said this, but a bunch of others say the opposite. Personally I'm not sure but it's an interesting topic to me.
1)placebo is a MOTHER FUCKER
when it comes to taking any drug people make up all sorts of stupid shit in there head.
2)these days everyone also wants to have something to say.
all this bs keeps idiots yapping.
i think those are the biggest. at some point you might run into shitty product vs good product and some other minor details but in the end get good product and you will get good results, doesnt matter brand name or not.