Phentermine is usually used as a short- term drug along with diet and behavior modification to treat obesity. Recently, it has been combined with diet and fenfluramine (Pondimin) and used over longer terms in selected obesity patients (P & P diets) with some favorable long-term modest weight loss.
DOSING: Phentermine should be taken after breakfast; evening doses should be avoided because of secondary insomnia.
DRUG INTERACTIONS: Phentermine should not be taken by patients with glaucoma, hyperthyroidism, or a history of drug abuse or psychotic illnesses. Phentermine is not recommended in patients with high blood pressure that is not well controlled. Patients on phentermine should have their blood pressure closely followed. Insulin requirements may change in patients on phentermine; alcohol can cause a drug interaction. Abrupt stoppage of the drug can cause withdrawal with fatigue and depression. Phentermine is potentially addicting. Phentermine is not recommended for patients with symptomatic heart disease including rhythm problems.
SIDE EFFECTS: Side effects include diarrhea, dry mouth, constipation, an unpleasant taste, hives, impotence, palpitations, high blood pressure, and fast heart rates. Central nervous system side effects include overstimulation, insomnia, restlessness, tremor, and dizziness
(ITS SUPPOSED TO BE AWESOME FOR FAT LOSS, but can be ADDICTING....I am looking for someone's experience who used this in another thread)