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Quinidex
What is atrial fibrillation?
Atrial fibrillation (AF) is the most common, abnormal rhythm of the heart.
The heart contracts (beats) and pumps blood with a regular rhythm, for example,
at a rate of 60 beats per minute there is a beat every second. The heart may
beat faster or slower with a shorter or longer interval between beats, but at
any one rate the interval between beats is constant. This regular rhythm occurs
as a result of regular electrical discharges (currents) that travel through the
heart and cause the muscle of the heart to contract. In atrial fibrillation, the electrical
discharges are irregular and rapid and, as a result, the heart beats irregularly
and, usually, rapidly.
Atrial fibrillation is common; half a million new cases are diagnosed yearly
in the U.S., and billions of dollars are spent annually on its diagnosis and
treatment.
What causes atrial fibrillation?
Normal function of the he...
Quinidex
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Please Note: This Brand Name drug is no longer available in the US.(Generic versions may still be available.)
Quinidex Drug Center
Medical Editor: John P. Cunha, DO, FACOEP
Quinidine Sulfate (brand name: Quinidex) is used to treat or prevent many types of irregular heartbeats (heart arrhythmias such as atrial fibrillation). Quinidine is an antiarrhythmic drug. This medication is available in generic form. Common side effects include diarrhea, nausea, vomiting, loss of appetite, stomach pain/cramps, or a burning feeling in throat or chest (e.g., heartburn).
Dosage for quinidine sulfate is based on medical condition and response to treatment. For adults, the dosage ranges from 400 to 4000 mg/day. Quinidine sulfate should not be used with the following medications because very serious (possibly fatal) interactions may occur: HIV protease inhibitors, azole antifungals, propafenone, cisapride, arbutamine, or mefloquine. Other medications that may interact with quinidine sulfate include amiodarone, dofetilide, pimozide, procainamide, sotalol, antibiotics, ziprasidone, mesoridazine, thioridazine, antacids, barbiturates, carbamazepine, rifamycins, phenytoin, carbonic anhydrase inhibitors, aripiprazole, atomoxetine, codeine, hydrocodone, loperamide, medication for high blood pressure, quinupristin/dalfopristin, etravirine, oramprenavir/fosamprenavir. During pregnancy, quinidine sulfate should be used only when prescribed. This medication passes into breast milk. Consult your doctor before breast-feeding.
Our Quinidine Sulfate (brand name: Quinidex) Drug Center provides a comprehensive view of available drug information as well as related drugs, user reviews, supplements, and diseases and conditions articles.
What is Prescribing information?
The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.
Quinidex Prescribing Information: Indications & Dosage
Conversion of Atrial Fibrillation/Flutter
In patients with symptomatic atrial fibrillation/flutter whose symptoms are not adequately controlled by measures that reduce the rate of ventricular response, Quinidex (quinidine) is indicated as a means of restoring normal sinus rhythm. If this use of Quinidex (quinidine) does not restore sinus rhythm within a reasonable time (see DOSAGE AND ADMINISTRATION), then Quinidex (quinidine) should be discontinued.
Reduction of Frequency of Relapse into Atrial Fibrillation/Flutter
Chronic therapy with Quinidex (qu...
Read the complete drug monograph for Quinidex »
What is Quinidex Prescribing Information?
Drug Description - Indications & Dosage - Side Effects & Drug Interactions - Warnings & Precautions - Contraindications - Medication Guide and More
What is Patient information?
Easy-to-read and understand detailed drug information and pill images for the patient or caregiver from Cerner Multum.
Quinidex Patient Information: Side Effects
If you experience any of the following serious side effects, stop taking quinidine and seek emergency medical attention or contact your doctor immediately:
- an allergic reaction (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives);
- a new or a worsening irregular heartbeat pattern;
- chest pain or chest discomfort;
- ringing in the ears;
- changes in vision;
- dizziness, fainting, or headache;
- rash;
- difficulty breathing;
- abdominal pain, nausea, or ...
Read the complete patient information for Quinidex »
What is Quinidex Patient Information?
Possible Side Effects - Images - What Is - How Should I Take It - What If I Miss a Dose - What Should I Avoid and More
What is Consumer information?
A concise overview of the drug for the patient or caregiver from First DataBank.
Quinidex Consumer Information: Uses
This medication is used to treat or prevent many types of irregular heartbeats (heart arrhythmias such as atrial fibrillation). Quinidine can greatly improve your ability to perform normal activities by decreasing the number of irregular heartbeats you have. However, it may not stop all your irregular heartbeats completely. It works by blocking abnormal heartbeat signals.
Before and while you are using quinidine, your doctor may prescribe other medications (e.g., "blood thinners"/anticoagulants such as warfarin, beta blockers such as metoprolol) to shrink any blood clots in the heart and to...
Read the complete consumer information for Quinidex »
What is Quinidex Consumer Information?
Warnings - Uses - How to Use - Side Effects - Precautions - Drug Interactions and More
Next: Drug Description
Additional Quinidex Information
Quinidex - User Reviews
Quinidex User Reviews
Now you can gain knowledge and insight about a drug treatment with Patient Discussions.
Here is a collection of user reviews for the medication Quinidex sorted by most helpful.
Report Problems to the Food and Drug Administration
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