Generic Name: nifedipine (nye FED i peen)
Brand Name: Adalat CC, Afeditab CR, Nifediac CC, Nifedical XL, Procardia, Procardia XL
What is Afeditab CR (nifedipine)?
Nifedipine is in a group of drugs called calcium channel blockers. It works by relaxing the muscles of your heart and blood vessels.
Nifedipine is used to treat hypertension (high blood pressure) and angina (chest pain).
Nifedipine may also be used for purposes not listed in this medication guide.
What is the most important information I should know about Afeditab CR (nifedipine)?
You should not use nifedipine if you have severe coronary artery disease, or if you have had a heart attack within the past 2 weeks.
What should I discuss with my healthcare provider before taking Afeditab CR (nifedipine)?
You should not use this medicine if you are allergic to nifedipine, if you have severe coronary artery disease, or if you have had a heart attack within the past 2 weeks.
To make sure nifedipine is safe for you, tell your doctor if you have:
severe COPD (chronic obstructive pulmonary disease);
congestive heart failure; or
if you take other medications, especially an antibiotic or antifungal medicine, an antidepressant, heart or blood pressure medicine, or drugs to treat HIV/AIDS or hepatitis C.
It is not known whether nifedipine will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant.
Nifedipine can pass into breast milk and may harm a nursing baby. Tell your doctor if you are breast-feeding a baby.
The nifedipine extended-release tablet may contain lactose. Talk to your doctor before using this form of nifedipine if you have galactose intolerance, or severe problems with lactose (milk sugar).
How should I take Afeditab CR (nifedipine)?
Follow all directions on your prescription label. Your doctor may occasionally change your dose to make sure you get the best results. Do not take this medicine in larger or smaller amounts or for longer than recommended.
You may need to take an extended-release tablet on an empty stomach. Follow the directions on your medicine label about taking this medication with or without food.
Do not crush, chew, or break an extended-release tablet. Swallow it whole.
Your blood pressure will need to be checked often and you may need other blood tests at your doctor's office.
Some tablet forms of nifedipine are made with a shell that is not absorbed or melted in the body. Part of the tablet shell may appear in your stool. This is a normal side effect of nifedipine and will not make the medication less effective.
If you need surgery, tell the surgeon ahead of time that you are using nifedipine. You may need to stop using the medicine at least 36 hours before surgery.
You may have very low blood pressure while taking this medication. Call your doctor if you are sick with vomiting or diarrhea, or if you are sweating more than usual.
If you are also taking a beta-blocker (atenolol, carvedilol, labetalol, metoprolol, nadolol, nebivolol, propranolol, sotalol, and others) you should not stop using the beta-blocker suddenly or you could have serious heart problems that will not be prevented by nifedipine. Follow your doctor's instructions about tapering your beta-blocker dose.
You should not stop using nifedipine suddenly. Stopping suddenly may make your condition worse.
If you are being treated for high blood pressure, keep using this medication even if you feel well. High blood pressure often has no symptoms. You may need to use blood pressure medication for the rest of your life.
Store at room temperature away from moisture, heat, and light.
What happens if I miss a dose?
Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.
What should I avoid while taking Afeditab CR (nifedipine)?
Grapefruit and grapefruit juice may interact with nifedipine and lead to unwanted side effects. Discuss the use of grapefruit products with your doctor.
Avoid getting up too fast from a sitting or lying position, or you may feel dizzy. Get up slowly and steady yourself to prevent a fall.
Afeditab CR (nifedipine) side effects
Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have:
a light-headed feeling, like you might pass out;
pounding heartbeats or fluttering in your chest;
chest pain or heavy feeling, pain spreading to the jaw or shoulder, nausea, sweating, general ill feeling;
swelling in your ankles or feet; or
upper stomach pain, jaundice (yellowing of the skin or eyes).
Common side effects may include:
flushing (warmth, redness, or tingly feeling);
weakness, headache, mood changes;
tremors, muscle cramps; or
cough, wheezing, sore throat, stuffy nose.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
See also: Side effects (in more detail)
What other drugs will affect Afeditab CR (nifedipine)?
Other drugs may interact with nifedipine, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell each of your health care providers about all medicines you use now and any medicine you start or stop using.
More about Afeditab CR (nifedipine)
Related treatment guides
Where can I get more information?
- Your pharmacist can provide more information about nifedipine.
- Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.
- Disclaimer: Every effort has been made to ensure that the information provided by Cerner Multum, Inc. ('Multum') is accurate, up-to-date, and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. Multum information has been compiled for use by healthcare practitioners and consumers in the United States and therefore Multum does not warrant that uses outside of the United States are appropriate, unless specifically indicated otherwise. Multum's drug information does not endorse drugs, diagnose patients or recommend therapy. Multum's drug information is an informational resource designed to assist licensed healthcare practitioners in caring for their patients and/or to serve consumers viewing this service as a supplement to, and not a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners. The absence of a warning for a given drug or drug combination in no way should be construed to indicate that the drug or drug combination is safe, effective or appropriate for any given patient. Multum does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse or pharmacist.
Copyright 1996-2012 Cerner Multum, Inc. Version: 12.01.
Last reviewed: March 17, 2015
Date modified: January 10, 2017