Corgard (Nadolol)

(℞) Prescription Required

    Corgard (Nadolol) Dosage and Side Effects

    CORGARD is used to treat high blood pressure and chest pain. This prescription medicine is also sometimes given to prevent migraine headaches. In addition, it's used to treat Parkinson's disease (a movement disorder) and irregular heartbeat.

    Proper Use of this medication

    CORGARD comes as a tablet to take by mouth, usually once a day.

    Your dose will depend on your medical condition and response to treatment.

    Your doctor may start you on a low dose and gradually increase it.

    Try to take CORGARD around the same time each day, without missing a dose.

    You can take this medicine with or without food.

    Follow the instructions on your prescription label carefully. Don't take more or less CORGARD than is recommended.

    It may take a few weeks before you experience the full benefits of this drug.

    Continue to take CORGARD even if you feel well. Don't stop using it without talking to your doctor.

    CORGARD Overdose

    Symptoms of a CORGARD overdose may include:

    •Severe dizziness or lightheadedness


    •Difficulty breathing or swallowing

    •Slow heartbeat

    •Sudden, unexplained weight gain

    •Swelling of the hands, ankles, lower legs, or feet

    If you suspect an overdose, contact a poison control center or emergency room immediately.

    Missed Dose of CORGARD

    If you miss a dose of CORGARD, take it as soon as you remember.

    But if it's almost time for your next scheduled dose, skip the missed dose and continue with your regular medication schedule.

    Don't take extra medicine to make up for a missed dose.

    Side Effects

    Common Side Effects of CORGARD

    Tell your doctor if any of the following side effects become severe or don't go away:

    •Mild dizziness or lightheadedness



    Serious Side Effects of CORGARD

    Tell your doctor right away if you experience any of the following serious side effects:

    •Blurred vision or other vision problems


    •Severe dizziness or lightheadedness

    •Fever, chills, or sore throat

    •Shortness of breath

    •Chest pain or discomfort

    •Slow or irregular heartbeat

    •Sudden, unexplained weight gain

    •Swelling of the hands, ankles, or feet

    •Unusual bleeding or bruising

    •Pain in the upper right part of the stomach

    •Yellowing of the skin or eyes

    •Dark-colored urine

    •Clay-colored stools

    •Behavior changes


    •Short-term memory problems

    •Burning, numbness, or tingling

    •Cold fingers or toes

    •Signs of a severe allergic reaction, which may include hives, rash, difficulty breathing, tightness in the chest, or swelling of the mouth, lips, face, or tongue

    Warnings and Precautions

    CORGARD contains a black box warning because it could cause chest pain or a heart attack if you stop taking it suddenly.

    Don't stop using this medicine without first talking to your doctor. Your healthcare provider will gradually take you off CORGARD.

    Before you use this medicine, tell your doctor if you have, or have ever had:

    •Breathing conditions, such as bronchitis, asthma, sleep apnea, or chronic obstructive pulmonary disease (COPD)

    •Heart failure, a heart blockage, a slow heart rate, heart disease, chest pain, or any other heart problems

    •Blood vessel problems

    •Circulation problems


    •A thyroid disorder

    •Liver or kidney disease


    •Psoriasis (a skin condition)

    •Myasthenia gravis (a chronic neuromuscular disease)

    •Pheochromocytoma (a tumor on a small gland near the kidneys)


    •Severe allergies

    Tell your healthcare provider that you're using this medicine before having any type of surgery, including a dental procedure.

    If you have diabetes, this medicine may mask the symptoms of a low blood sugar episode. Monitor your blood sugar levels carefully while using CORGARD.

    Your doctor may recommend following a diet and exercise plan while taking CORGARD. Follow these instructions carefully.

    Keep all appointments with your doctor and laboratory while taking this medicine. You'll need to have your blood pressure and heart rate checked regularly.

    Your doctor may also order other tests to check your body's response to this medicine.

    Pregnancy and CORGARD

    It's not known whether CORGARD could harm an unborn baby if it's taken during pregnancy.

    Tell your doctor if you're pregnant, or plan to become pregnant before using this medicine.

    This drug passes into breast milk. Don't breastfeed a baby without first talking to your doctor while using CORGARD.

    Interactions with this medication

    Tell your doctor about all prescription, nonprescription, illegal, recreational, herbal, nutritional, or dietary drugs you're taking, especially:



    •Lanoxin (digoxin)

    •Catapres or Kapvay (clonidine)

    •Clorpres (clonidine and chlorthalidone)

    •Adrenaclick or EpiPen (epinephrine)

    •Other medication for high blood pressure or heart disease

    •Nonsteroidal anti-inflammatory drugs (NSAIDs), such as Advil or Motrin (ibuprofen) and Indocin or Indo-Lemmon (indomethacin)

    •Medication for asthma or other breathing disorders

    •Cold medicines, stimulants, or diet pills

    •Medicines for diabetes, Parkinson's disease, mood disorders, high cholesterol, or migraines

    •Dietary supplements

    CORGARD and Other Interactions

    CORGARD may cause drowsiness.

    Don't drive, operate machinery, or perform other activities that require alertness until you know how this medicine affects you.

    CORGARD and Green Tea

    Green tea may interfere with how CORGARD works in your body.

    Talk to your doctor about this potential interaction.

    CORGARD and Alcohol

    Alcohol may worsen certain side effects of CORGARD.

    Talk to your doctor before drinking alcoholic beverages while using this drug.

    Other related products

    The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

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