And don't forget generics...my father recently got switched to a different generic and began having crazy side effects...only after calling the manufacturer did we find out that this drug had 14 additives in it that neither matched the name brand nor the generic...there is no regulation on these generics and their additives and it is often the additives that are causing the strange reactions. The pharmacists have no idea what additives are in these drugs, so if you are found to be reactive to one, there is no way to be sure that you won't be given it again...but your insurance company saves money and that is all they care about.