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Generically Known as Atenolol [a-TEN -oh-lol]
Name of The Brand: Tenormin
Dosage Format: Oral tablet (100 mg, 25 mg, 50 mg)
Drug Class: Cardioselective beta blockers

What is Atenolol?

Atenolol is a beta-blocker medication that can affect the heart and circulation (blood flows through veins and arteries).

Atenolol can be used to treat angina (chest pain) and hypertension (high blood pressure).Atenolol can also be utilized to reduce the chance of dying after the occurrence of a cardiac attack


It is not recommended to use atenolol for anyone with serious heart conditions like "AV block," very slow heartbeats, or heart failure.

Don't stop using atenolol immediately without first speaking with your doctor. If you stop abruptly, it could cause your condition to get worse.If you're undergoing any kind of surgery, ensure that the surgeon is aware ahead of time that you will be using this drug.

Atenolol can trigger side effects that could affect your reaction or thinking. Be aware if you are driving or performing any other activity that requires you to stay conscious and awake. Avoid drinking alcohol, as it could cause dizziness and drowsiness when you take this medication.Atenolol is just one component of a full treatment programme for hypertension. It could include exercise, diet, and weight management. Make sure you follow your diet, medications, and exercise regimens carefully if you're being diagnosed with hypertension.

If you're being treated for high blood pressure, you should continue the medicine even though you are feeling fine. The presence of high blood pressure is often accompanied by no signs. It could be necessary to take blood pressure medications throughout your life.

Before You Take This Drug

Atenolol should not be used when you have an allergy to the drug or are suffering from

  • An extremely heart-related condition, like "AV block" (second or third degree);

  • Heartbeats that are slow

  • Heart


  • If your heart isn't pumping blood effectively.

To ensure atenolol is appropriate for you, consult your doctor if you have:

  • Congestive heart failure;

  • Coronary arteriatric condition (hardened the arteries);

  • Asthma, bronchitis, and emphysema;

  • Diabetes;

  • Hyperactive thyroid

  • Kidney or liver disease;

  • Pheochromocytoma (tumor in the adrenal gland);

  • Peripheral vascular diseases like Raynaud's syndrome peripheral vascular diseases such as Raynaud's syndrome

  • Allergies (or the need for treatment for allergies, or testing your skin).

Atenolol can harm a newborn baby. Tell your doctor if you are pregnant or become pregnant while taking this medicine.

Atenolol may be absorbed into the breast milk and cause harm to the baby who is nursing.

Tell your physician if you have a baby in your.

Atenolol isn't recommended for use by people younger than

How To Take Atenolol?

You should take atenolol exactly as it was prescribed to you. Follow all instructions on the label of your prescription and study all instructions or medication guides. The doctor might modify your dose.

Your blood pressure is likely to be checked regularly.

If you require surgery, inform your surgeon in advance that you're taking atenolol. It is possible that you will need to stop taking the medication for a brief period of time.

Use the medication exactly as prescribed, and notify your doctor if you experience any symptoms that don't improve.

You shouldn't stop taking atenolol suddenly. Stopping suddenly may increase the severity of your illness.

If you're being treated for high blood pressure, continue taking this medication even if you feel good. The presence of high blood pressure is often accompanied by no signs. It is possible that you will need blood pressure medication throughout your life.

The condition you are suffering from may require treatment with an array of drugs. Follow all medications as prescribed by your physician. Review the medication guideline or patient's directions that are included with every medication. Do not alter your dosage or schedule of medication without a physician's guidance.

Keep the bottle at room temperature, free of heat, moisture, and light. Close the bottle when not being used.

Details On Dosage

Usual Adult Dose of Atenolol for Hypertension:

The first dose is 50 mg, taken orally every day.

Dosage for maintenance: 50 to 100 mg taken orally, once a day.Maximum dose: 100 mg per day.


If the desired response isn't achieved within 1 to 2 weeks, increasing up to 100 mg could be beneficial.

Doses higher than 100 mg twice a day were not associated with any significant antihypertensive effects.Use: To treat hypertension by itself or when combined with other antihypertensive drugs.

Atenolol dosage for angina pectoris prevention in adults:

The first dose is 50 mg, taken orally every day.

Increase to 100 mg daily after one week if the optimal response cannot be achieved.

Dosage for maintenance: 50 to 200 mg once orally every day.Maximum dose: 200 mg per day.


Some patients might require 200 mg a day to achieve the best effect.

Use: To help with the long-term treatment of angina pectoris caused by coronary atherosclerosis.

Atenolol dosage for angina pectoris in adults:

The first dose is 50 mg orally, once a day.

Increase the dosage to 100 mg every day for 1 week if an optimal response cannot be achieved.Maintenance dose: 50–200 mg taken orally, once a day.Maximum dose: 200 mg per day.


Certain patients may require 200 mg per day for optimal results.

Use: To help with the long-term treatment of angina pectoris caused by coronary atherosclerosis.

Atenolol dosage for myocardial infarction in adults:

50 mg taken orally twice per day, or 100 mg taken orally every day


If the IV beta blockers are not appropriate or contraindicated, treatment with oral medication should be continued until at least 7 days following myocardial infarction (MI).

The treatment with beta blockers after MI is recommended for between 1 and 3 years, provided the patient is not in contraindications.

Use: To manage the condition in hemodynamically stable individuals with confirmed or suspected acute myocardial infarction and to decrease mortality from cardiovascular disease.

The UsualUsualatric Dose of Atenolol for Hypertension:Initial dose: Think about cutting the dose down to 25 mg once orally per day.

What Happens If I Miss a Dose?

Do not take the medicine for as long as you are able, but do not take your missed dose if you are nearing the time to take the next dose. Don't take two doses at a time.

What Happens If I Overdose?

Get medical attention in an emergency or contact the Poison Help line toll-free at 1-800-222-1222.

Overdose symptoms can include severe weakness or a feeling of fatigue,

low heart rates

or breathing, shortness of breath, or fainting.

What Should Be Avoided?

Follow your doctor's advice regarding any dietary restrictions or beverages.

Side Effects Of Atenolol 

Contact a medical professional immediately. Get medical attention immediately if you show symptoms of an allergic reaction to atenolol. itching, breathing difficulties, or swelling of your lips, face, or tongue.

See your doctor right away. If you suffer from:

  • New or worsening chest pain that isn't getting better or worse;

  • Irregular or slow heartbeats;

  • A lightheaded sensation, similar to feeling like you're about to pass out.

  • Breath shortness (even when exercising lightly), swelling, or rapid weight gain; or

  • A cold sensation on your feet and hands.

Common side effects of atenolol include:

  • Cold feet or hands;

  • Dizziness;

  • Tiredness;

  • Depression.

This isn't a complete list of all the side effects. Other side effects could occur. Contact your doctor to seek medical advice on adverse effects.

If you have any concerns, report the allergic reactions or symptoms to FDA by calling 1-800-FDA-1088.

Interaction With Other Drugs

Inform your doctor about all your medications currently in use and any new medications you begin or stop using, in particular:

  • Digoxin, digitalis;

  • Indomethacin;

  • Bisoprolol, labetalol, metoprolol, propranolol, carvedilol, sotalol, timolol, and any other beta-blocker—

  • Amiodarone, clonidine, diltiazem, disopyramide, nicardipine, nifedipine, reserpine, verapamil, and others. Mentioned Above are the heart or blood pressure medications.

This list isn't complete. Other drugs can interact with atenolol. This includes medications that are prescribed and available over the counter, vitamins, and herbal products. Some interactions with drugs are not listed here. are included here.




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