Quinidine Controlled-Release Tablets

• Tell all of your health care providers that you take this medicine (quinidine controlled-release tablets). This includes your doctors, nurses, pharmacists, and dentists.
• Have blood work checked as you have been told by the doctor. Talk with the doctor.
• Avoid grapefruit and grapefruit juice.
• If you are on a low-salt or salt-free diet, talk with your doctor.
• This medicine may affect how much of some other drugs are in your body. If you are taking other drugs, talk with your doctor. You may need to have your blood work checked more closely while taking this medicine with your other drugs.
• Tell your doctor if you are pregnant or plan on getting pregnant. You will need to talk about the benefits and risks of using this medicine (quinidine controlled-release tablets) while you are pregnant.

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:

• Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
• Very bad dizziness or passing out.
• Slow heartbeat.
• Chest pain or pressure.
• Feeling very tired or weak.
• Ringing in ears.
• Hearing loss.
• Very upset stomach or throwing up.
• Mood changes.
• Change in balance.
• Change in eyesight.
• If bright lights bother your eyes.
• Feeling confused.
• Very bad headache.
• Fever or chills.
• A type of abnormal heartbeat (prolonged QT interval) has happened with this medicine. Sometimes, this has led to another type of unsafe abnormal heartbeat (torsades de pointes). Call your doctor right away if you have a fast or abnormal heartbeat, or if you pass out.
• Low platelet counts have rarely happened with this medicine (quinidine controlled-release tablets). This may lead to a higher chance of bleeding. Call your doctor right away if you have any unexplained bruising or bleeding.

• Store at room temperature.
• Protect from light.
• Store in a dry place. Do not store in a bathroom.
• Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
• Check with your pharmacist about how to throw out unused drugs.

• If your symptoms or health problems do not get better or if they become worse, call your doctor.
• Do not share your drugs with others and do not take anyone else's drugs.
• Keep a list of all your drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your doctor.
• Talk with the doctor before starting any new drug, including prescription or OTC, natural products, or vitamins.
• Some drugs may have another patient information leaflet. Check with your pharmacist. If you have any questions about this medicine, please talk with your doctor, nurse, pharmacist, or other health care provider.
• If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

Review Date: October 4, 2017