What is Quinapril and why is it prescribed?
Quinapril is used in the treatment of high blood pressure. It can be taken alone or in combination with a thiazide type of water pill. It works by preventing a chemical in your blood called angiotensin I from converting into a more potent form that increases salt and water retention in your body. Quinapril also enhances blood flow throughout your blood vessels. Along with other drugs, Quinapril is also prescribed in the treatment of congestive heart failure. You must take Quinapril regularly for it to be effective. Quinapril does not cure high blood pressure but it keeps it under control.

How should you take Quinapril?
Follow your doctors directions for taking Quinapril. You can take Quinapril with or without meals. Alcohol may increase the effect of Quinapril, and could cause dizziness or fainting. Avoid alcoholic beverages until you have checked with your doctor. Take Quinapril exactly as prescribed, and see your doctor regularly to make sure the drug is working properly without unwanted side effects. Do not stop taking Quinapril without first consulting your doctor. If you miss a dose take the forgotten dose as soon as you remember. However, if it is almost time for your next dose, skip the one you missed and go back to your regular schedule. Do not take two doses at once. Quinapril can be stored at room temperature. Protect it from light.

Are there any Quinapril side effects?
Quinapril side effects cannot be anticipated. If any develop or change in intensity, inform your doctor as soon as possible. More common Quinapril side effects may include dizziness and headache. Less common Quinapril side effects may include abdominal pain, coughing, fatigue, nausea, and vomiting. Rare Quinapril side effects may include angina, back pain, bleeding in the stomach or intestines, bronchitis, changes in heart rhythm, constipation, depression, diarrhea, dimmed vision, dizziness when first standing up, dry mouth or throat, extremely high blood pressure, fainting, fluid accumulation and swelling, gas, hair loss, heart attack, heart failure, hepatitis, high potassium, impotence, increased blood pressure, increased sweating, indigestion, inflammation of the pancreas, inflammation of the sinuses, insomnia, itching, kidney failure, joint pain, low blood pressure, muscle pain, nervousness, numbness/tingling, palpitations, rapid heartbeat, rash, sensitivity to light, severe allergic reactions, skin peeling, sleepiness, sore throat, stroke, swelling of the mouth and throat, urinary tract infection, vague feeling of illness, and vertigo.

What are the possible food and drug interactions when taking Quinapril?
If Quinapril is taken with certain other drugs, the effects of either could be increased, decreased, or altered. Be sure to inform your doctor of all the prescription and over the counter medications you are taking. It is especially important to check with your doctor before combining Quinapril with Diuretics (such as Lasix), Lithium (Eskalith, Lithobid), Magnesium, Potassium-sparing diuretics (such as Aldactone, Dyazide, and Moduretic), Potassium supplements (such as Slow-K and K-Dur), Salt substitutes containing potassium, or Tetracycline (Sumycin).

Are there any special warnings about Quinapril?
If you develop swelling of the face, lips, tongue, or throat, or of your arms and legs, or have difficulty swallowing or breathing, you should contact your doctor immediately. You may need emergency treatment. You may feel light-headed, especially during the first few days of Quinapril therapy. If this occurs, notify your doctor. If you actually faint, stop taking the medication until you have consulted with your doctor. Vomiting, diarrhea, and heavy perspiration can all deplete your body fluid; and dehydration can cause your blood pressure to drop. If this leads to light-headedness or fainting, you should check with your doctor. Inform your doctor or dentist that you are taking Quinapril before undergoing surgery or anesthesia. Do not use potassium supplements or salt substitutes containing potassium without consulting your doctor. If you develop a sore throat, fever, or any other sign of infection, contact your doctor immediately. It could indicate a more serious illness. If you are taking Quinapril, your doctor will do a complete assessment of your kidney function and will watch it closely as long as you are taking this drug. If you notice a yellow tinge to your skin and the whites of your eyes, stop taking the drug and notify your doctor immediately. This could be a sign of liver damage. The safety and effectiveness of Quinapril in children has not been established.

Information on this website is provided for educational purposes and should not replace discussions with your doctor.


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