How about sides? What MG do you run it at? Trying to figure out if I should give it a try?
I've been running Stan's tren enanthate off and on for about five years and have had zero complications provided I'm careful about injecting. When I'm on tren E I run 200-300 mg twice a week, for around 10-15 weeks before taking a break. And not to go off on a rant, but the results I've gotten from tren E have been phenomenal and blow away results from any and every other gear I've tried including the fabled primo so it's literally a waste of money for me to use anything but tren E. But that's just me.
Every once in a while I give myself a case of tren cough from not being quite careful enough and I find those episodes both unpleasant and frightening. I don't know if I'm extra-sensitive or what, but I've also had the same issue with tren E that I've gotten from other sources so I know it's not Stan's product that is the problem, it's just tren E is bad about triggering allergic reactions if I don't treat it with the care it warrants.
Specifically, I have to be careful about aspirating the syringe, obviously to make sure I have no blood in the syringe (of course) but I have to also be certain that I get a nice stream of bubbles to have a safe, gag-free injection. I'm not sure why, but I think that when I aspirate and get few or no bubbles (or blood) then I'm probably in a bit of connective tissue rather than in muscle or interstitial tissue as I should be. And this tissue is much tougher and less permeable than muscle tissue.
When I don't get bubbles, I find that if I stupidly persist in injecting anyway I have to press the plunger a lot harder than normally. I think that what's happening when I do that (and again this is just a SWAG) I'm putting the fluid under so much pressure to get it out of the syringe that it's infiltrating tissue that it wouldn't normally penetrate to any degree. And to finish that long-winded attempt at explanation, I think that what ultimately happens is that I'm forcing the tren into my bloodstream by putting so much pressure on it that it gets into small vessels and capillaries that it wouldn't normally get into. And what follows is a nasty case of the typical tren cough.
So now, if I get blood in the syringe, I pull it out and re-stab in a different spot. Or if I get very few or no bubbles. Or, if I just have an unusually hard time injecting in any particular spot. I have to yank and re-stick probably once every five or six injections and it's an annoyance to have to do it but it beats hell out of tren cough.