Nadolol is used alone or in combination with other medications to treat high blood pressure. It is also used to prevent angina (chest pain). Nadolol is in a class of medications called beta blockers. It works by relaxing blood vessels and slowing heart rate to improve blood flow and decrease blood pressure.

High blood pressure is a common condition and when not treated, can cause damage to the brain, heart, blood vessels, kidneys, and other parts of the body.Damage to these organs may cause heart disease, a heart attack, heart failure, stroke, kidney failure, loss of vision, and other problems.In addition to taking medication, making lifestyle changes will also help to control your blood pressure.These changes include eating a diet that is low in fat and salt, maintaining a healthy weight, exercising at least 30 minutes most days, not smoking, and using alcohol in moderation.

Nadolol comes as a tablet to take by mouth. It is usually taken once a day with or without food. To help you remember to take nadolol, take it around the same time every day. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take nadolol exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.

Your doctor may start you on a low dose of nadolol and gradually increase your dose to allow your body to adjust to the medication. Talk to your doctor about how you feel and about any symptoms you experience during this time.

Nadolol controls your condition but does not cure it. Continue to take nadolol even if you feel well. Do not stop taking nadolol without talking to your doctor. If you suddenly stop taking nadolol, you may experience serious heart problems such as angina (chest pain), heart attack, or an irregular heartbeat. Your doctor will probably want to decrease your dose gradually over 1 to 2 weeks. Your doctor will watch you carefully and will probably tell you to avoid physical activity during this time.

Nadolol is also used sometimes to prevent migraine headaches. Talk to your doctor about the possible risks of using this medication for your condition.

This medication may be prescribed for other uses; ask your doctor or pharmacist for more information.

Before taking nadolol,

• tell your doctor and pharmacist if you are allergic to nadolol, any other medications, or any ingredients in nadolol tablets. Ask your pharmacist for a list of the ingredients.
• tell your doctor and pharmacist what prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking while taking nadalol. Your doctor may need to change the doses of your medications or monitor you carefully for side effects.
• tell your doctor if you have asthma or other lung diseases, a slow or irregular heartbeat, or heart failure. Your doctor may tell you not to take nadolol.
• tell your doctor if you have or have ever had heart or kidney disease, diabetes, pheochromocytoma (a tumor that develops on a gland near the kidneys and may cause high blood pressure and fast heartbeat), or hyperthyroidism (an overactive thyroid gland). Also tell your doctor if you have ever had a serious allergic reaction to a food or any other substance.
• tell your doctor if you are pregnant, plan to become pregnant, or are breastfeeding. If you become pregnant while taking nadolol, call your doctor.
• if you are having surgery, including dental surgery, tell the doctor or dentist that you are taking nadolol.
• you should know that nadolol may increase the risk of hypoglycemia (low blood sugar) and prevent the warning signs and symptoms that would tell you that your blood sugar is low. Let your doctor know if you are unable to eat or drink normally or are vomiting while you are taking nadolol. You should know the symptoms of low blood sugar and what to do if you have these symptoms.
• you should know that if you have allergic reactions to different substances, your reactions may be worse while you are taking nadolol, and your allergic reactions may not respond to the usual doses of injectable epinephrine.
• you should know that if you have allergic reactions to different substances, your reactions may be worse while you are taking nadolol, and your allergic reactions may not respond to the usual doses of injectable epinephrine.

Unless your doctor tells you otherwise, continue your normal diet.

Take the missed dose as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one.

Nadolol may cause side effects. Tell your doctor if either of these symptoms is severe or does not go away:

• dizziness or lightheadedness
• excessive tiredness
• cold hands and feet

Some side effects can be serious. The following symptoms are uncommon, but if you experience any of them, call your doctor immediately:

• shortness of breath
• swelling of the hands, feet, ankles, or lower legs
• unusual weight gain
• fainting
• chest pain
• slow or irregular heartbeat

Nadolol may cause other side effects. Call your doctor if you have any unusual problems while taking this medication.

If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online (https://www.fda.gov/Safety/MedWatch) or by phone (1-800-332-1088).

Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture (not in the bathroom).

Dispose of unneeded medications in a way so that pets, children, and other people cannot take them. Do not flush this medication down the toilet. Use a medicine take-back program. Talk to your pharmacist about take-back programs in your community. Visit the FDA's Safe Disposal of Medicines websitehttps://goo.gl/c4Rm4p for more information.

Keep all medication out of sight and reach of children as many containers are not child-resistant. Always lock safety caps. Place the medication in a safe location – one that is up and away and out of their sight and reach.https://www.upandaway.org

In case of overdose, call the poison control helpline at 1-800-222-1222. Information is also available online athttps://www.poisonhelp.org/help. If the victim has collapsed, had a seizure, has trouble breathing, or can't be awakened, immediately call emergency services at 911.

Symptoms of overdose may include the following:

• slow heartbeat
• dizziness
• fainting
• difficulty breathing
• cough or wheezing
• swelling of the hands, feet, ankles, or lower legs
• unusual weight gain

Keep all appointments with your doctor. Your blood pressure should be checked regularly to determine your response to nadolol. Your doctor may ask you to check your pulse (heart rate). Ask your pharmacist or doctor to teach you how to take your pulse. If your pulse is faster or slower than it should be, call your doctor.

Do not let anyone else take your medication. Ask your pharmacist any questions you have about refilling your prescription.

Keep a written list of all of the prescription and nonprescription (over-the-counter) medicines, vitamins, minerals, and dietary supplements you are taking. Bring this list with you each time you visit a doctor or if you are admitted to the hospital. You should carry the list with you in case of emergencies.

• Corgard^®