What MommaB said and one other thing. Speed and all drugs like it are VERY HARD ON YOUR TEETH. You need to take extra precautions with your teeth and possibly a calcium supplement. Brush more often, see your dentist regularly, etc. Back in my younger more stupid days I tried some speed called White Cross, my friends laughed because it made me sleepy so I might have some ADD or AADD. I'd forgotten that.