Do not take quinapril if you are pregnant. If you become pregnant while taking quinapril, call your doctor immediately. Quinapril may harm the fetus.
Why is this medication prescribed?
Quinapril is used alone or in combination with other medications to treat high blood pressure. It is used in combination with other medications to treat heart failure. Quinapril is in a class of medications called angiotensin-converting enzyme (ACE) inhibitors. It works by decreasing certain chemicals that tighten the blood vessels, so blood flows more smoothly and the heart can pump blood more efficiently.
High blood pressure is a common condition and when not treated, can cause damage to the brain, heart, blood vessels, kidneys, and other parts of the body. Damage to these organs may cause heart disease, a heart attack, heart failure, stroke, kidney failure, loss of vision, and other problems. In addition to taking medication, making lifestyle changes will also help to control your blood pressure. These changes include eating a diet that is low in fat and salt, maintaining a healthy weight, exercising at least 30 minutes most days, not smoking, and using alcohol in moderation.
How should this medicine be used?
Quinapril comes as a tablet to take by mouth. It is usually taken once or twice a day. To help you remember to take quinapril, take it around the same time(s) every day. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take quinapril exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.
Your doctor will probably start you on a low dose of quinapril and gradually increase your dose, not more than once every 1 or 2 weeks.
Quinapril controls high blood pressure and heart failure but does not cure them. Continue to take quinapril even if you feel well. Do not stop taking quinapril without talking to your doctor.
Other uses for this medicine
This medication may be prescribed for other uses; ask your doctor or pharmacist for more information.
What special precautions should I follow?
Before taking quinapril,
- tell your doctor and pharmacist if you are allergic to quinapril; other ACE inhibitors such as benazepril (Lotensin, in Lotrel), captopril (Capoten), enalapril (Vasotec, in Vaseretic), fosinopril (Monopril), lisinopril (in Prinzide, in Zestoretic), moexipril (Univasc, in Uniretic), perindopril (Aceon), ramipril (Altace), and trandolapril (Mavik, in Tarka); any other medications; or any ingredients in quinapril tablets. Ask your pharmacist for a list of the ingredients.
- tell your doctor if you have diabetes and you are taking aliskiren (Tekturna, in Amturnide, Tekamlo, Tekturna HCT). Your doctor will probably tell you not to take quinapril if you have diabetes and you are also taking aliskiren.
- tell your doctor and pharmacist what prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking. Be sure to mention any of the following: diuretics ('water pills'); lithium (Lithobid); potassium supplements; and tetracycline. Your doctor may need to change the doses of your medications or monitor you carefully for side effects.
- tell your doctor if you have or have ever had heart, liver, or kidney disease; diabetes; lupus; scleroderma (a condition in which extra tissue grows on the skin and some organs);or angioedema (condition that causes difficulty swallowing or breathing and painful swelling of the face, throat, tongue, lips, eyes, hands, feet, ankles, or lower legs).
- tell your doctor if you are breastfeeding.
- if you are having surgery, including dental surgery, tell the doctor or dentist that you are taking quinapril.
- you should know that diarrhea, vomiting, not drinking enough fluids, and sweating a lot can cause a drop in blood pressure, which may cause lightheadedness and fainting.
What special dietary instructions should I follow?
Talk to your doctor before using salt substitutes containing potassium. If your doctor prescribes a low-salt or low-sodium diet, follow these directions carefully.
What should I do if I forget a dose?
Take the missed dose as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one.
What side effects can this medication cause?
Quinapril may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:
- excessive tiredness
- upset stomach
Some side effects can be serious. If you experience any of these symptoms, call your doctor immediately:
- swelling of the face, throat, tongue, lips, eyes, hands, feet, ankles, or lower legs
- difficulty breathing or swallowing
- yellowing of the skin or eyes
- fever, sore throat, chills, and other signs of infection
- chest pain
Quinapril may cause other side effects. Call your doctor if you have any unusual problems while taking this medication.
If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online (http://www.fda.gov/Safety/MedWatch) or by phone (1-800-332-1088).
What should I know about storage and disposal of this medication?
Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture (not in the bathroom). Throw away any medication that is outdated or no longer needed. Talk to your pharmacist about the proper disposal of your medication.
In case of emergency/overdose
In case of overdose, call your local poison control center at 1-800-222-1222. If the victim has collapsed or is not breathing, call local emergency services at 911.
Symptoms of overdose may include the following:
What other information should I know?
Keep all appointments with your doctor and the laboratory. Your blood pressure should be checked regularly to determine your response to quinapril. Your doctor may order certain lab tests to check your body's response to quinapril.
Do not let anyone else take your medication. Ask your pharmacist any questions you have about refilling your prescription.
It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.
Brand names of combination products
- Accuretic® (containing Quinapril, Hydrochlorothiazide)
- Quinaretic® (containing Quinapril, Hydrochlorothiazide)