how come the pharmacy change generics like underwear, you just get use to one an the find another thats 2 cents cheaper than that so swap again. One chemist i used to use swaped generics an everyone on sertraline crashed with a bad batch. it took docs around my erea an age to reolise ther was a pattern forming. in England this happens all the time, there is bound to be suttle different,s in the meds that will trip someone.It does my head in , i started a new generic again yesterday , i didnt have a choise thats what the chemist had bought in, so thats all you get.