Same here. I always believed that generics were identical until one time the pharmacy gave me a generic for an SSRI. I was suddenly enveloped in physical pain in my chest and neck, so I called my doctor. She told me it happens, generics can cause different side effects and reactions, so she gave me a new prescription specifying the brand and the pain went away...until much later when there was a shortage of the brand name and I had no choice to go to the generic. And the pain came right back.