For me the pain goes away once I get used to it. I may get pain from injections first 2-3 weeks of the compound, then it always becomes painless in the long run.
I recently switched test prop brands, and my body wasn't used to the new solution. It hurt like a bitch for about 2 weeks after switching and then no more pain now.
This is where we differ and why we're disputing this. I never had painful injections sites from the very first injection of pharmaceutical grade sustanon, deca, enanthate. I didn't have to get used to it because it never hurt and I'm talking about hundreds of injections.
UG propionate hurt from the very first injection and although I persisted for 6 weeks at EOD injections, the pain only got worse to the point I had to dump the balance of my stock because the pain was crippling.