I used to be able to take 3 7.5 mgs and be fine and happy. Then it got up to 6 pills but i was doing it everyday. I havent done it in MONTHS and i decided to do it again. I started with 3, went to 4, 5 and finally 6. it takes 6 just to feel the threshold effects and i dont wanna go any further. Can somone explain this to me? It never was this bad, even when i was doing it daily.