This medication is used to prevent certain types of chest pain (angina). It may allow you to exercise more and decrease the frequency of angina attacks. Nifedipine belongs to a class of medications known as calcium channel blockers. It works by relaxing blood vessels so blood can flow more easily. This medication must be taken regularly to be effective. It should not be used to treat attacks of chest pain when they occur. Use other medications (such as sublingual nitroglycerin) to relieve attacks of chest pain as directed by your doctor. Consult your doctor or pharmacist for details. Older adults should discuss the risks and benefits of this medication with their doctor or pharmacist, as well as other possibly safer forms of nifedipine (such as the long-acting tablets).

Take this medication by mouth, usually 3 times daily with or without food or as directed by your doctor. Swallow this medication whole. Do not crush, chew, or break the capsule.

The dosage is based on your medical condition and response to treatment. Your doctor may gradually increase your dose. Follow your doctor’s instructions carefully.

Avoid eating grapefruit or drinking grapefruit juice while taking this medication unless your doctor instructs you otherwise. Grapefruit can increase the concentration of certain medications in your bloodstream. Consult your doctor or pharmacist for more details.

Use this medication regularly to get the most benefit from it. To help you remember, take it at the same times each day.