Teva is the only generic people should get- it for sure makes a difference. Not all pharmacies have it, I know Walgreens does. But I would also try the immediate release kind (still Teva) It is so much more flexible. Some days I need more than others, and others days I want to take them at different times, etc. The results have always been pretty consistent with me. Most side effects went away after a few weeks. So at least try a few weeks as a lot of the side effects can go away and the good effects stay. After a few months on the drug the only side effects I notice are dry mouth (but not that bad) and the occasional headache, not more than once a week and it goes away with Tylenol.