I used it several years ago and didn't get either pain nor flu symptoms. It was very good test though. I used it when I was already had been using. So what I am saying is I have noticed for myself that the only time I really felt flu symptoms (on any inj.) was after a layoff of injectables.
I've gotten flu symtpons a couple times with green nile sust, and some mexi stuff, but only after a decent layoff.
I'm not sure if you're asking this because you heard that is the case with Galenka. Maybe so now but for me 7-8 years ago they were nothing but good, clean, potent overfilled test.