UG are a gamble, under doses, not correct compound, sterile, contaminated metals, etc
clearly you have no idea what you are talking about. "contaminated metals"
REally? Do you know what could happen to the people who make the stuff and get cought with the accusation you are doing now?
Little story for you.... A guy I know once sent some "stuff" to a guy. The vials broke in the package and the package was opened because it was showing something leaked inside it.
The guy who sent the package was brought in by police to question him about the package. Turns out he was let free but they tested the stuff and had it been shown there were contaminants, that would have put him in serious shit as then you can be accused of something rather heavy. I forget the exact terms, but "contamination to human kind" or some shit like that.
In all the years doing this, nobody has ever had an infection or problem whatsoever.
People LOVE to cry "underdosed" to make up for their own commitment and lack of gains, so they think paying idiotic pharma prices (like you) will be on a good patch to muscle gains.
Others, (like me) are smarter than that.
But hey, do your shit man but I kinda have more of an inside than you do on this and am much better positioned to comment on this as you're just repeating stuff you heard and THINK you know.