What is Quinidine Sulfate: Uses, Warnings & Interactions

Your doctor will tell you how much to take and how often.

Take this medicine exactly as your doctor ordered, even if you feel fine.

Take on an empty stomach - 1 hour before or 2 hours after meals. Your doctor may tell you to take this medicine with food or milk to avoid stomach upset.

Swallow the extended-release tablet whole - do not break, chew, or crush.

You may need to carry identification so others will know that you are taking quinidine. Ask you doctor about this.

Your doctor will tell you how much to take and how often.

Take this medicine exactly as your doctor ordered, even if you feel fine.

Take on an empty stomach - 1 hour before or 2 hours after meals. Your doctor may tell you to take this medicine with food or milk to avoid stomach upset.

Swallow the extended-release tablet whole - do not break, chew, or crush.

You may need to carry identification so others will know that you are taking quinidine. Ask you doctor about this.

Take the missed dose as soon as you can unless you are more than 2 hours late, or 4 hours if you are taking extended-release tablets.

If you are more than 2 hours late (4 hours for the extended-release tablets), skip the missed dose and take the medicine at your usual time.

You should not use two doses at the same time.

You should not use this medicine if you have ever had an allergic reaction to quinidine or quinine. You should not take this medicine if you have lupus or myasthenia gravis (a muscle disease).

Check with your doctor before taking quinidine if you have blood, kidney or liver disease, asthma, an infection, psoriasis (a skin disease), or overactive thyroid.

Tell your doctor or dentist that you are taking quinidine before you have any kind of surgery.

Do not suddenly stop taking this medicine without checking with your doctor.

Talk with your doctor before taking quinidine if you are pregnant or breastfeeding.

Quinidine may make you dizzy or drowsy. Be careful if you drive a car or operate machinery.

Unusual bruising or bleeding

Make sure your doctor knows if you are taking other heart medicines such as Procan®, Lanoxin®, Cordarone®, or Inderal®, blood thinners such as Coumadin®, acetazolamide (Diamox®), or pimozide (Orap®).

Tell your doctor or dentist that you are taking quinidine before you have any kind of surgery.

Do not suddenly stop taking this medicine without checking with your doctor.

Talk with your doctor before taking quinidine if you are pregnant or breastfeeding.

Quinidine may make you dizzy or drowsy. Be careful if you drive a car or operate machinery.