abnormal uterine bleeding
"I've switched between different generic versions of Ortho tri cyclen, and this is not my favorite. I have terrible cystic acne, and it did help a LOT with that. But it did nothing at all for my periods. My periods without birth control caused me to be in a haze, nausea, vomiting, terrible cramping, and heavy bleeding. With Tri-Linyah, it was mostly the same! The other generic pills I tried at least eased my periods so that they were bearable. On Tri-Linyah I also didn't know what to expect, some periods would be longer, start at different times, or be lighter/heavier. 
I'm not sure how different generic medications of the same type can really be, but I noticed this one was definitely different."