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Metoprolol is available as a 25 mg, 37.5 mg, 50 mg, 75 mg, and 100 mg oral tablet.

Metoprolol is a beta-blocker that is used to treat high blood pressure, chest pain (angina) and to lower risk of death after heart attack.

Metoprolol is a selective beta blocker. It slows down the heart which allows it to put less pressure on the body’s blood vessels. By slowing down the heart, it also allows the heart to use less oxygen which improves chest pain.

Metoprolol is typically given as 100 mg to 450 mg daily, taken by mouth in divided doses, depending on the condition being treated.

Metoprolol 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 severe bradycardia, heart block greater than first degree, cardiogenic shock, decompensated cardiac failure, sick sinus syndrome (unless a permanent pacemaker
is in place), and in patients who are hypersensitive to any component of this product.

Common side effects of Metoprolol:

• Tiredness
• Dizziness
• Diarrhea
• Rash
• Depression

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

• Heart failure: trouble breathing, fast weight gain, feeling very tired, chest pain, swelling in the legs, ankles, or feet
• Bronchospasm: tightness in the chest, trouble catching your breath, difficulty breathing, wheezing, cough, dizziness, extreme tiredness

The following medications may interact with Metoprolol:

• 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

Various FDA-approved generic manufacturers

Available data from published observational studies have not demonstrated an association of adverse developmental outcomes with maternal use of Metoprolol during pregnancy. You should talk to your healthcare provider before taking this medication if you are pregnant.

• Lopressor
• Toprol XL