Brand Names: Quinaglute Dura-Tabs, Quinidex Extentabs, Quin-Release

Generic Name: quinidine (Pronunciation: KWIH nih deen)

• What is quinidine (Quinidex)?
• What are the possible side effects of quinidine (Quinidex)?
• What is the most important information I should know about quinidine (Quinidex)?
• What should I discuss with my healthcare provider before taking quinidine (Quinidex)?
• How should I take quinidine (Quinidex)?
• What happens if I miss a dose (Quinidex)?
• What happens if I overdose (Quinidex)?
• What should I avoid while taking quinidine (Quinidex)?
• What other drugs will affect quinidine (Quinidex)?
• Where can I get more information?

What is quinidine (Quinidex)?

Quinidine affects the way that the heart beats.

Quinidine is used to treat irregular heartbeat patterns.

Quinidine may also be used for purposes other than those listed in this medication guide.

Quindine 324 mg ER-WAT

round, white, imprinted with 5538, DAN

Quinidine 200 mg-WAT

round, white, imprinted with 5438, DAN DAN

Quinidine 300 mg ER-TEV

round, white, imprinted with 93 175

Quinidine 300 mg-WAT

round, white, imprinted with 5454, DAN DAN

Quinidine Gluconate 324 mg-URL

round, white, imprinted with MP 66

What are the possible side effects of quinidine (Quinidex)?

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 vomiting; or
• yellowing of the skin or eyes.

Other, less serious side effects may be more likely to occur. Continue to take quinidine and talk to your doctor if you experience

• mild upset stomach;
• headache;
• decreased appetite;
• diarrhea; or
• muscle weakness.

Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome. You may report side effects to FDA at 1-800-FDA-1088.

What is the most important information I should know about quinidine (Quinidex)?

Contact your doctor immediately if you experience ringing in the ears, changes in vision, dizziness, fainting, a rapid heartbeat, headache, nausea, a rash, or difficulty breathing.

Do not skip doses or change your dosing schedule without talking to your doctor. Changing your schedule could make your condition worse.

Quinidine may be taken with food to lessen stomach upset.

Do not crush, chew, or break any extended- or sustained-release formulations of quinidine. Swallow them whole. If you are not sure whether you have a long-acting form of quinidine, ask your pharmacist, nurse, or doctor.