meaning taking 3 or 4, 8mg tablets a day wont help you any more than taking 2, 8mg tablets a day. cause im on 2 8's a day but feel like its not enough and when i told my dr. he said that it cuts off at 2. but yet i know other people with different dr. that get 3 or 4 8's a day was wondering if there has ever been any study to back up what my dr. told me