atenolol

Pronunciation: ah TEN oh lol

Brand: Tenormin

Atenolol 100 mg-GG

round, white, imprinted with GG 264

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Atenolol 100 mg-MAL

round, white, imprinted with Z 67

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Atenolol 100 mg-MUT

round, white, imprinted with MP 147

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Atenolol 100 mg-MYL

round, white, imprinted with M, 757

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Atenolol 100 mg-SCH

round, white, imprinted with DAN 100, 5778

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Atenolol 100 mg-TEV

round, white, imprinted with 753, TEVA

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Atenolol 100 mg-WAT

round, white, imprinted with 5778, DAN 100

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Atenolol 25 mg-APO

round, white, imprinted with INV, 259

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Atenolol 25 mg-GG

round, white, imprinted with GG L7

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Atenolol 25 mg-MAL

round, white, imprinted with 65, Z

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Atenolol 25 mg-MYL

round, white, imprinted with M, A2

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Atenolol 25 mg-TEV

round, white, imprinted with 787, TEVA

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Atenolol 50 mg-GG

round, white, imprinted with GG 263

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Atenolol 50 mg-IVA

round, white, imprinted with GG 263

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Atenolol 50 mg-MAL

round, white, imprinted with Z 66

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Atenolol 50 mg-MUT

round, white, imprinted with MP 146

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Atenolol 50 mg-MYL

round, white, imprinted with M, 231

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Atenolol 50 mg-TEV

round, white, imprinted with 93 752, TEVA

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Atenolol 50 mg-WAT

round, white, imprinted with 5777, DAN 50

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Tenormin 100 mg

round, white, imprinted with 101, TENORMIN

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Tenormin 25 mg

round, white, imprinted with T, 107

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Tenormin 50 mg

round, white, imprinted with 105, TENORMIN

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What is the most important information I should know about atenolol?

Multum donot

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.

Multum dizzy

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.

Multum noalcohol

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.

Multum rt

Store atenolol at room temperature away from moisture and heat.

What is atenolol?

Atenolol 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.

What should I discuss with my healthcare provider before taking atenolol?

Multum donot

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:

  • asthma, bronchitis, emphysema;
  • diabetes;
  • low blood pressure;
  • a heart problem such as heart block, sick sinus syndrome, slow heart rate, or congestive heart failure;
  • depression;
  • liver or kidney disease;
  • a thyroid disorder;
  • myasthenia gravis;
  • pheochromocytoma; or
  • problems with circulation (such as Raynaud's syndrome).

If you have any of these conditions, you may need a dose adjustment or special tests to safely take this medication.

Multum nopreg

FDA pregnancy category D. This medication can cause harm to an unborn baby. Do not use atenolol if you are pregnant. Tell your doctor if you become pregnant during treatment. Use an effective form of birth control while you are using this medication.

Multum nobrfeed

Atenolol can pass into breast milk and may harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

How should I take atenolol?

Take atenolol exactly as it was prescribed for you. Do not take the medication in larger amounts or for longer than recommended by your doctor. Follow the directions on your prescription label.

Multum water

Take this medication with a full glass of water.

Take atenolol at the same time every day.

Multum donot

Do not skip doses or stop taking atenolol without first talking to your doctor. Stopping suddenly may make your condition worse.

To be sure this medication is helping your condition, your blood pressure will need to be checked on a regular basis. Do not miss any visits to your doctor.

If you need to have any type of surgery, tell the surgeon that you are using atenolol. You may need to briefly stop using atenolol before having surgery.

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.

Multum rt

Store atenolol at room temperature away from moisture and heat.

What happens if I miss a dose?

Take the missed dose as soon as you remember. If your next dose is less than 8 hours away, skip the missed dose and take the medicine at the next regularly scheduled time. Do not take extra medicine to make up the missed dose.

What happens if I overdose?

Multum emt

Seek emergency medical attention if you think you have used too much of this medicine.

Overdose symptoms may include uneven heartbeats, shortness of breath, bluish-colored fingernails, dizziness, weakness, fainting, or seizure (convulsions).

What should I avoid while taking atenolol?

Multum dizzy

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.

Multum noalcohol

Avoid drinking alcohol, which could increase drowsiness and dizziness while you are taking atenolol.

What are the possible side effects of atenolol?

Multum emt

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Multum emt

Call your doctor at once if you have any of these serious side effects:

  • slow or uneven heartbeats;
  • feeling light-headed, fainting;
  • feeling short of breath, even with mild exertion;
  • swelling of your ankles or feet;
  • nausea, stomach pain, low fever, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes);
  • depression; or
  • cold feeling in your hands and feet.

Less serious side effects may include:

  • decreased sex drive, impotence, or difficulty having an orgasm;
  • sleep problems (insomnia);
  • tired feeling; or
  • anxiety, nervousness.

This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect. You may report side effects to FDA at 1-800-FDA-1088.

What other drugs will affect atenolol?

Before taking atenolol, tell your doctor if you are using:

  • allergy treatments (or if you are undergoing allergy skin-testing);
  • amiodarone (Cordarone, Pacerone);
  • clonidine (Catapres);
  • digoxin (digitalis, Lanoxin);
  • disopyramide (Norpace);
  • guanabenz (Wytensin);
  • an MAO inhibitor such as isocarboxazid (Marplan), tranylcypromine (Parnate), phenelzine (Nardil), or selegiline (Eldepryl, Emsam);
  • a diabetes medication such as insulin, glyburide (Diabeta, Micronase, Glynase), glipizide (Glucotrol), chlorpropamide (Diabinese), or metformin (Glucophage);
  • a heart medication such as nifedipine (Procardia, Adalat), reserpine (Serpasil), verapamil (Calan, Verelan, Isoptin), diltiazem (Cartia, Cardizem);
  • medicine for asthma or other breathing disorders, such as albuterol (Ventolin, Proventil), bitolterol (Tornalate), metaproterenol (Alupent), pirbuterol (Maxair), terbutaline (Brethaire, Brethine, Bricanyl), and theophylline (Theo-Dur, Theolair); or
  • cold medicines, stimulant medicines, or diet pills.

This list is not complete and there may be other drugs that can interact with atenolol. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.

Where can I get more information?

Your pharmacist can provide more information about atenolol.


Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

Every effort has been made to ensure that the information provided by Cerner Multum, Inc. ('Multum') is accurate, up-to-date, and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. Multum information has been compiled for use by healthcare practitioners and consumers in the United States and therefore Multum does not warrant that uses outside of the United States are appropriate, unless specifically indicated otherwise. Multum's drug information does not endorse drugs, diagnose patients or recommend therapy. Multum's drug information is an informational resource designed to assist licensed healthcare practitioners in caring for their patients and/or to serve consumers viewing this service as a supplement to, and not a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners. The absence of a warning for a given drug or drug combination in no way should be construed to indicate that the drug or drug combination is safe, effective or appropriate for any given patient. Multum does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse or pharmacist.

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