Description

Nifedipine is one of a newer generation of calcium channel blockers which have minimal activity in the heart. Rather, they promote the relaxation of blood vessels. They are extremely effective in controlling high blood pressure and are among the first-line agents in this area. They also are effective in controlling chest pain, or angina. The regular or immediate release form of nifedipine should probably not be used as it causes blood pressure to drop too quickly, which can be harmful.

When might my doctor prescribe this medication?

• High blood pressure (or hypertension)
• Chest pain (or angina)
• High lung pressures (or pulmonary hypertension)

I should NOT take this medication if:

• I have had allergic reactions to nifedipine or other calcium channel blockers in the past
• I have very low blood pressure

Adverse Effects (common):

• Leg swelling
• Headache
• Fatigue
• Flushing
• Nausea
• Dizziness
• Fast heart rate or palpitations

Common Adult doses and Forms:

Nifedipine (Procardia XL, Adalat CC): 30 mg to 120 mg once daily

Dosage Forms:
Nifedipine (Procardia) (capsule): 10 mg, 20 mg
Nifedipine XL (Procardia XL) (tablet): 30 mg, 60 mg, 90 mg
Nifedipine CC (Adalat CC) (tablet): 30 mg, 60 mg, 90 mg

How should I take this medication?

Tablets should not be crushed or chewed and swallowed whole. Nifedipine should be taken on an empty stomach. Avoid consuming grapefruit juice while taking this medication as this prevents the metabolism or breakdown of the drug in the body. Certain extended release formulations of nifedipine will have “shells” that appear in the stool. This is normal.