I suggest you be very careful with
phentermine, it is very similar to the chemical makeup of methamphetamine. The side
effects of high dose or extended use are similar to amphetamine. This drug can blow out your adrenal glands, make you grind teeth until they rot, cause nervous ticks. When amphetamines were more regulated to sell as diet aids, phentermine started to be the main drug sold for hunger suppression. Be careful, people do get strung out on that drug.