Keep in mind this never happens with pharmaceutical GH like Saizen. So if its happening from a sponsor, its most likely contaminated in some way with impurities that make it different from pharma.
Have you ever tried pharma?
How do you know this doesn't happen with pharma? Just because it hasn't happened to you.
Go on www.emdserono.com (the makers of saizen and serostim) and pull up the pdf file that says full prescribing info for each of the gh products they make and read the insane list of potential side effects their products can cause.
Or just google it.
Theres probably more excipients in pharma brands then there is in generic gh. I think most generics just use mannitol. Each different excipient is a potential allergic response.
Just using hgh in general, regardless of who makes it can cause a lot of side effects that no one ever talks about here. Just because one of those side effects hasn't happened to them everyone is quick to blame the product.