Atenolol
Atenolol is used alone or in combination with other medications to treat high blood pressure. It also is used to prevent angina (chest pain) and improve survival after a heart attack. Atenolol 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.
🔔 How should this medicine be used?
Atenolol comes as a tablet to take by mouth. For the treatment of high blood pressure and to prevent angina, it is usually taken once a day. To improve survival after a heart attack, it is usually taken once or twice a day. To help you remember to take atenolol, take it around the same time(s) 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 atenolol exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.
Your doctor will probably start you on a low dose of atenolol 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.
Atenolol controls high blood pressure and angina but does not cure them. It may take 1-2 weeks before you feel the full benefit of atenolol. Continue to take atenolol even if you feel well. Do not stop taking atenolol without talking to your doctor. If you suddenly stop taking atenolol, 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. Your doctor will watch you carefully and will probably tell you to avoid physical activity during this time.
🔔 Other uses for this medicine
Atenolol is also used sometimes to prevent migraine headaches and to treat alcohol withdrawal, heart failure, and irregular heartbeat. Talk to your doctor about the possible risks of using this medication for your condition.
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This medication may be prescribed for other uses; ask your doctor or pharmacist for more information.
🔔 What special precautions should I follow?
Before taking atenolol,
- tell your doctor and pharmacist if you are allergic to atenolol, any other medications, or any of the ingredients in atenolol 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 you are taking atenolol. Your doctor may need to change the doses of your medications or monitor you carefully for side effects.
- tell your doctor if you have a slow or irregular heart rate or heart failure. Your doctor may tell you not to take atenolol.
- tell your doctor if you have or have ever had asthma or other lung diseases; diabetes; hyperthyroidism (an overactive thyroid gland); pheochromocytoma (a tumor that develops on a gland near the kidneys and may cause high blood pressure and fast heartbeat); circulation problems; or heart or kidney disease. 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 breast-feeding. If you become pregnant while taking atenolol, call your doctor immediately.
- if you are having surgery, including dental surgery, tell the doctor or dentist that you are taking atenolol.
- you should know that atenolol may cause dizziness, lightheadedness, and fainting when you get up too quickly from a lying position. This is more common when you first start taking atenolol. To avoid this problem, get out of bed slowly, resting your feet on the floor for a few minutes before standing up.
- you should know that atenolol 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 atenolol. 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 atenolol, and your allergic reactions may not respond to the usual doses of injectable epinephrine.
🔔 What special dietary instructions should I follow?
Unless your doctor tells you otherwise, continue your normal diet.