Diltiazem is used to treat high blood pressure (hypertension) and to prevent chest pain (angina). It may help to increase your ability to exercise and decrease how often you get chest pain. Diltiazem may also be used to control your heart rate if you have a fast or irregular heartbeat (such as atrial fibrillation). It works by relaxing blood vessels which helps to lower blood pressure. Diltiazem belongs to a group of medicines called calcium channel blockers. In New Zealand diltiazem is available in different strengths of capsules (120 mg, 180 mg, 240 mg and 360 mg).
|May 2021: Notification that diltiazem tablets are no longer available in New Zealand.|
|As of May 2021, diltiazem tablets (30mg and 60mg) are no longer available in New Zealand. If you are taking diltiazem tablets, talk to your doctor about other treatment options.
Note: Diltiazem capsules are still available.