Atenolol (Tenormin) is in a group of drugs called beta-blockers.
Beta-blockers affect the heart and circulation (blood flow through
arteries and veins).
Atenolol is used to treat angina (chest pain) and hypertension (high
blood pressure). It is also used to treat or prevent heart attack.
Atenolol may also be used for purposes other than those listed in this medication guide.
Important information about atenolol
Do not stop taking atenolol without first talking to your doctor. Stopping suddenly may make your condition worse.
If you need to have any type of surgery, you may need to temporarily
stop using atenolol. Be sure the surgeon knows ahead of time that you
are using atenolol.
Atenolol can cause side effects that may impair your thinking or
reactions. Be careful if you drive or do anything that requires you to
be awake and alert. Avoid drinking alcohol, which could increase
drowsiness and dizziness while you are taking atenolol.
Atenolol is only part of a complete program of treatment for
hypertension that may also include diet, exercise, and weight control.
Follow your diet, medication, and exercise routines very closely if you
are being treated for hypertension.
If you are being treated for high blood pressure, keep using this
medication even if you feel fine. High blood pressure often has no
symptoms. You may need to use blood pressure medication for the rest of
your life.
Store atenolol at room temperature away from moisture and heat.
What should I discuss with my healthcare provider before taking atenolol?
You should not use this medication if you are allergic to atenolol,
or if you have certain heart conditions such as slow heartbeats, or
heart block.
Before taking atenolol, tell your doctor if you have:
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asthma, bronchitis, emphysema;
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diabetes;
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low blood pressure;
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a heart problem such as heart block, sick sinus syndrome, slow heart rate, or congestive heart failure;
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depression;
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liver or kidney disease;
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a thyroid disorder;
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myasthenia gravis;
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pheochromocytoma; or
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problems with circulation (such as Raynaud's syndrome).