Insulin requirements may change in patients on phentermine
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.