I think the most pervasively terrible side effect for me is the acid reflux when I run 19-nor compounds. I have to stay on zantac the whole cycle, eat several tums a day, and my stomach still burns.
worst experience? being mid cycle on tren and going on a 12 mile offshore fishing trip for 8 hours and getting seasick. i was pissing BROWN pee and throwing up the whole time. i wish they had thrown me overboard to get eaten by a shark it was the worst experience in my life