MILD :

Blurred vision, dry mouth, sleeplessness, irritability, stomach upset or constipation may occur the first few days as your body adjusts to the medication. Other adverse events include central nervous system effects, gastrointestinal disturbances, and changes in libido. If these effects persist or become bothersome, you may have to discontinue use. Exercise caution when prescribing anti-obesity drugs for patients with hypertension. If this medication makes you dizzy or lightheaded, avoid driving or engaging in activities requiring alertness. Alcohol can increase unwanted side effects of dizziness. Limit its use.

MODERATE :

Chest pain, pounding heart, difficulty urinating, breathing difficulties or swelling while taking this medication.

SEVERE :

Primary pulmonary hypertension (PPH) and cardiac valvular disease have been reported in patients receiving a combination of phentermine and fenfluramine (phen-fen) or dexfenfluramine. The possibility of an association between PPH and the use of PHENTERMINE alone cannot be ruled out.

CONTRAINDICATIONS :

PHENTERMINE is contraindicated in patients with arteriosclerosis, cardiovascular disease, and moderate to severe hypertension.