I have noticed this with many different drugs. The pharmacy I have been going to for a few years has just switch all their generics!! I have Multiple Chemical Sensitivity. It took so look to find the generics of all my meds that I could tolerate. The Ritalin generic that they gave me is causing palpitations and tremors. It was suggested that I switch to Adderall last year. Now I am hearing all of this-which I am grateful for. I just don’t even know what to do any more. I wish all of you good luck in finding the right generic. I know it’s not fun at all!!