I used Dr. prescribed Amphetamines (Dextroamphetamine) for six years until 9 months ago when I gave them up in order to quit smoking. During that time I was the happiest and most productive I have ever been in my life. If you can get a Doctor to prescribe them go for it, but to take them (even pharmaceutical grade) without a doctor's ongoing advice is foolhardy at best and life ending at worst.