General Info:

Verapamil (Calan) is in a class of drugs called calcium channel blockers. Verapamil (Calan) relaxes (widens) blood vessels (veins and arteries), which makes it easier for the heart to pump and reduces its workload. Verapamil (Calan) is used to treat hypertension (high blood pressure), to treat angina (chest pain), and to control some types of irregular heartbeats.

Do not stop taking Verapamil (Calan) without first talking to your doctor. If you stop taking Verapamil (Calan), your condition could become worse.

Grapefruit and grapefruit juice may interact with Verapamil (Calan). The interaction could lead to potentially dangerous effects. Discuss the use of grapefruit and grapefruit juice with your doctor. Do not increase or decrease the amount of grapefruit products in your diet without first talking to your doctor.

Avoid the use alcohol. Alcohol may further lower blood pressure and increase drowsiness and dizziness while taking Verapamil (Calan).