For the last year I have been using Sostenon 250 and I have had good results! My Testosterone levels went from low 400 to mid 800. Of course if you get it at a street level place for sure, use common sense and buyer beware. But if you get it from a pharmacy like I have, speaking from experience, I don't see a problem with it. So many elderly uninsured people drive across to Canada to obtain medications that they cannot afford in the US. Why should Mexico be any different.
I know nothing for certain since I do not spend money having things tested for quality. I get my erections which is really the only endpoint that matters