This is what I take and I haven't noticed a difference in them. I had always taken Aleese because of my mail-in prescription program. They didn't have the generic version yet, so I got the name brand at the generic cost...I was paying $20 for a 3 month supply. Then they got the generic version and the name brand Aleese was costing me $50 for a 3 month supply. I opted to give the generics a try and they seemed to work just as well. If you do have any problems when switching, give it a month or two to work. If you still have problems, then I would give the doctor a call.