Atenolol - Oral - Drug Information and Side Effects on Drug3k.com


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Overview

Photos

How To Use

Side Effects

Precautions

Missed Dose

Drug Interactions

Atenolol - Oral
Tenormin

Uses
Atenolol is a beta-blocker used to treat chest pain (angina) and high blood pressure. It is also used after an acute heart attack to improve survival. High blood pressure reduction helps prevent strokes, heart attacks and kidney problems. Atenolol works by blocking the action of certain natural chemicals in your body such as epinephrine on the heart and blood vessels. This results in a lowering of the heart rate, blood pressure, and strain on the heart.

Storage

Store at room temperature between 68 and 77 degrees F (between 20 and 25 degrees C) away from light and moisture.
Do not store in the bathroom.
Keep all medicines away from children and pets.

Overdose

If overdose is suspected, contact your local poison control center or emergency room immediately.
Symptoms of overdose may include unusually slow heartbeat, severe dizziness, slow or shallow breathing, weakness, or fainting.

Photos




Atenolol is a beta-blocker used to

How To Use

Take Atenolol by mouth, usually once daily; or as directed by your doctor.
Use Atenolol regularly in order to get the most benefit from it.
To help you remember, use it at the same time each day.
Atenolol is not effective if you use it only when chest pain or a migraine headache occurs.
It is very important to take Atenolol regularly as prescribed to help prevent these conditions.
The dosage is based on your medical condition and response to therapy.
It may take one or two weeks before the full benefit of Atenolol takes effect.
It is important to continue taking Atenolol even if you feel well.
Most people with high blood pressure do not feel sick.
Do not suddenly stop taking Atenolol without consulting your doctor.
Your condition may become worse when Atenolol is suddenly stopped.
Refer to the Warning section.

Side Effects

You may experience dizziness, lightheadedness, drowsiness, tiredness, nausea, diarrhea, unusual dreams, leg pain, or vision problems as your body adjusts to the medication.
If any of these effects persist or worsen, notify your doctor or pharmacist promptly.
Atenolol may reduce blood flow to your hands and feet, causing them to feel cold.
Smoking may worsen this effect.
Dress warmly and avoid tobacco use.
Tell your doctor immediately if any of these unlikely but serious side effects occur: symptoms of a very slow heartbeat (e.g., persistent dizziness, fainting, unusual fatigue), bluish discoloration of the fingers and toes, numbness/tingling/swelling of the hands or feet, decreased sexual ability, reversible hair loss, mental/mood changes, joint changes, butterfly-shaped rash on the nose and cheeks, trouble breathing, cough, unexplained or sudden weight gain, increased thirst, increased urination.
Tell your doctor immediately if any of these highly unlikely but very serious side effects occur: easy bruising or bleeding, persistent sore throat or fever.
In the unlikely event you have an allergic reaction to Atenolol, seek medical attention immediately.
Symptoms of an allergic reaction include: rash, itching, swelling, severe dizziness, trouble breathing.
If you notice other effects not listed above, contact your doctor or pharmacist.

Precautions

Atenolol should not be used if you have certain medical conditions.
Before using Atenolol, consult your doctor or pharmacist if you have: certain types of irregular heartbeats (e.g., sinus bradycardia, second or third degree atrioventricular block), cardiogenic shock, severe heart failure (overt or decompensated type), a certain type of tumor (untreated pheochromocytoma).
Before using Atenolol, tell your doctor or pharmacist your medical history, especially of: heart failure (treated, compensated type), breathing problems (e.g., asthma, chronic obstructive lung disease), diabetes, overactive thyroid disease (hyperthyroidism), kidney disease, blood circulation problems (e.g., Raynaud s disease), skin conditions (e.g., psoriasis), mental/mood disorders (e.g., depression), certain muscle disease (myasthenia gravis), any allergies.
Before having surgery, tell your doctor or dentist that you are taking Atenolol.
If you have diabetes, Atenolol may mask the fast/pounding heartbeat you would usually feel when your blood sugar level falls too low (hypoglycemia).
Other symptoms of a low blood sugar level such as dizziness or sweating are unaffected by Atenolol.
Atenolol may make you dizzy or drowsy; use caution engaging in activities requiring alertness such as driving or using machinery.
Limit alcoholic beverages.
To minimize dizziness and lightheadedness, get up slowly when rising from a seated or lying position.
Atenolol should be used only when clearly needed during pregnancy.
Discuss the risks (e.g., low birth weight) and benefits with your doctor.
Atenolol passes into breast milk and may have undesirable effects on a nursing infant.
Consult your doctor before breast-feeding.

Missed Dose

If you miss a dose, take it as soon as you remember, but not if it is within 8 hours of the next dose.
If it is within 8 hours of the next dose, skip the missed dose and resume your usual dosing schedule.
Do not double the dose to catch up.

Drug Interactions

Atenolol should not be used with the following medications because very serious interactions may occur: mibefradil.
If you are currently using any of these medications, tell your doctor or pharmacist before starting Atenolol.
Before using Atenolol, tell your doctor or pharmacist of all prescription and nonprescription products you may use, especially of: alpha-blockers (e.g., prazosin), anti-diabetic drugs (e.g., glipizide, glyburide, insulin), calcium channel blockers (e.g., diltiazem, verapamil), epinephrine, general anesthesia, non-steroidal anti-inflammatory drugs (e.g., indomethacin, ibuprofen), other heart drugs (e.g., digoxin, quinidine), other drugs to treat high blood pressure (e.g., clonidine, reserpine).
Check the labels on all your medicines (e.g., cough-and-cold products, diet aids) because they may contain ingredients that could increase your heart rate or blood pressure.
Ask your pharmacist about the safe use of those products.
Do not start or stop any medicine without doctor or pharmacist approval.

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CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgement of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.