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Tenormin is the brand name for atenolol and is available as an oral tablet.

Tenormin is available as a 25 mg, 50 mg, and 100 mg oral tablet.

Tenormin is a beta-blocker that is used for the following:
High blood pressure Chest pain (stable angina) Lower risk of death after heart attack

Tenormin is a cardioselective beta-blocker. It slows down heart rate so your heart doesn’t have to work as hard to pump blood through the body. This puts less stress on the blood vessels, which lowers blood pressure. Tenormin also improves blood flow to the heart, which eases chest pain.

Tenormin is dosed as follows:

• High blood pressure
• Adults: The typical starting dose is 50 mg by mouth once daily. Your provider will raise your dose every few weeks if you need to lower your blood pressure more. The maximum recommended dose is 100 mg once daily
• Chest pain (angina)
• Adults: The typical starting dose is 50 mg by mouth once daily. Your provider will raise your dose within a week if you need better control of your chest pain. The usual maintenance dose is 100 mg once daily. The maximum dose is 200 mg once daily
• After a heart attack
• Adults: Tenormin is usually given as an injection into the veins (IV) in a hospital setting by a trained provider after a heart attack. Afterwards, the typical dose is 100 mg by mouth once daily, or 50 mg by mouth twice daily as directed by the provider

Your dose might differ if you have kidney problems.

Tenormin is a safe and effective treatment when used for FDA licensed indications. However, like all medications, they may give you unwanted side effects. You should always discuss potential side effects with your physician to ensure the medication is suitable and right for you. You should not use this medication if you have sinus bradycardia, heart
block greater than first degree, cardiogenic shock, and overt
cardiac failure.

Common side effects of Tenormin:

• Feeling tired
• Dizziness
• Cold hands and feet
• Feeling depressed
• Trouble catching your breath
• Slow heart rate

Serious side effects are rare with Tenormin. Contact your healthcare provider immediately if you experience any of the following.

• Worsening heart failure: shortness of breath, unusual swelling, tiredness, and sudden weight gain
• Bronchospasm: tightness in the chest, trouble catching your breath, difficulty breathing, wheezing, cough, dizziness, extreme tiredness

The following medications may interact with Tenormin:

• Catecholamine-depleting drugs may have an additive effect when given with beta-blocking agents.
• Patients may be unresponsive to the usual doses of epinephrine used to treat allergic reaction
• CYP2D6 Inhibitors are likely to increase metoprolol concentration
• Concomitant use of glycosides, clonidine, and diltiazem and verapamil with beta-blockers can increase the risk of bradycardia
• Beta-blockers including metoprolol, may exacerbate the rebound hypertension that can follow the withdrawal of clonidine

AstraZeneca

Tenormin use during pregnancy can cause harm to unborn babies, like growth problems. If you’re thinking of becoming pregnant, talk to your provider about safer options to manage your blood pressure. If you become pregnant while taking Tenormin, call your provider right away.

• Atenolol