Nifedipine (By mouth)
Uses of This Medicine
Nifedipine is used alone or together with other medicines to treat severe chest pain (angina) or high blood pressure (hypertension). High blood pressure adds to the workload of the heart and arteries. If it continues for a long time, the heart and arteries may not function properly. This can damage the blood vessels of the brain, heart, and kidneys, resulting in a stroke, heart failure, or kidney failure. High blood pressure may also increase the risk of heart attacks. These problems may be less likely to occur if blood pressure is controlled.
Nifedipine is a calcium channel blocker. It works by affecting the movement of calcium into the cells of the heart and blood vessels. As a result, nifedipine relaxes blood vessels and increases the supply of blood and oxygen to the heart while reducing its workload.
This medicine is available only with your doctor’s prescription.
Other uses (PubMed Health)
How To Use
Capsule, Liquid Filled Capsule, Long Acting Tablet
Take your medicine as directed. Your dose may need to be changed several times to find what works best for you.
It is best to take this medicine on an empty stomach.
Swallow the capsule or tablet whole. Do not break, crush, or chew it.
If you take the extended-release tablet, part of the tablet may pass into your stools. This is normal and is nothing to worry about.
Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.
Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.
Drugs and Foods to Avoid
Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.
Some foods and medicines can affect how nifedipine works. Tell your doctor if you are using the following:Cimetidine, clarithromycin, digoxin, erythromycin, fentanyl, fluconazole, fluoxetine, indinavir, itraconazole, nefazodone, nelfinavir, phenytoin, quinidine, ranitidine, saquinavir Beta-blockers Blood thinner (such as warfarin)
Do not eat grapefruit or drink grapefruit juice while you are using this medicine.
When Not To Use
This medicine is not right for everyone. Do not use it if you had an allergic reaction to nifedipine.
This medicine may cause the following problems:Heart failure Worsening chest pain or increased risk of heart attack Stomach or bowel blockage or ulcers
This medicine could lower your blood pressure too much, especially when you first use it or if you are dehydrated. Stand or sit up slowly if you feel lightheaded or dizzy.
Do not stop using this medicine without asking your doctor, even if you feel well. This medicine will not cure high blood pressure, but it will help keep it in normal range. You may have to take blood pressure medicine for the rest of your life.
Tell any doctor or dentist who treats you that you are using this medicine. You may need to stop using this medicine several days before you have surgery or medical tests.
Tell any doctor or dentist who treats you that you are using this medicine. This medicine may affect certain medical test results.
Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.
Keep all medicine out of the reach of children. Never share your medicine with anyone.
Possible side effects
Summary More details
Call your doctor right away if you notice any of these side effects:
Chest pain that may spread, trouble breathing, nausea, unusual sweating, fainting
Fast, pounding, or uneven heartbeat
Lightheadedness, dizziness, or fainting
Stomach pain or bloating, nausea, vomiting, weight loss
If you notice these less serious side effects, talk with your doctor:
If you notice other side effects that you think are caused by this medicine, tell your doctor.
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
More side effects of this drug
Brand names include
Adalat CC, Afeditab CR, Nifediac CC, Nifedical XL, Procardia, Procardia XL
There may be other brand names for this medicine.