Medically reviewed by Jessica Swirble, PharmD
Last updated on 7/2/2024

Drug Information | Side Effects | Use & Dosage | Request a Prescription

• Brand Name: Lopressor, Toprol XL
  
• Generic Name: Metoprolol ER
  
• Uses: Treating high blood pressure (hypertension), angina, and heart failure; preventing heart attacks
  
• Drug Class: Beta-blocker
  
• Availability: Prescription only
  
• Generic Status: Yes
  
• Controlled Substance: No
  
  

Metoprolol ER is a beta-blocker used to treat various cardiovascular conditions. It works by affecting the response to nerve impulses in certain parts of the body, like the heart. This reduces the heart rate and makes the heart more efficient at pumping blood, which helps to lower blood pressure.

Metoprolol ER is primarily used to treat conditions such as:

• High blood pressure (hypertension): Metoprolol ER lowers blood pressure and reduces the risk of cardiovascular events such as strokes and heart attacks.
  
• Angina (chest pain): Used to decrease the frequency and severity of angina attacks.
  
• Heart failure: Metoprolol ER manages symptoms and improves heart function when prescribed along with therapy options.
  
  

It is also prescribed to prevent heart attacks in patients who have already suffered from one.

Metoprolol ER works by blocking the action of certain natural chemicals in your body, such as epinephrine and norepinephrine, on the heart and blood vessels. This effect reduces heart rate, blood pressure, and strain on the heart.

Metoprolol ER can be taken in different forms, depending on the specific needs:

• Extended-release oral tablets
  
  

The dosage and duration of treatment depend on the condition being treated, its severity, and your response to the medication.

Follow your healthcare provider's instructions regarding dosage and schedule. Do not exceed the prescribed dose or duration of treatment without consulting your provider.

The effectiveness of metoprolol ER and the time it takes to notice improvement can vary among individuals. Blood pressure reduction can generally be observed within a few hours of taking the medication, but it may take several weeks to achieve optimal blood pressure control.

Continue taking metoprolol ER as prescribed even if you start feeling better. Do not abruptly stop the medication, as it may lead to adverse cardiovascular events.

While metoprolol ER is primarily used for managing cardiovascular conditions, healthcare providers may sometimes prescribe it off-label for conditions such as:

• Tremors
  
• Migraine prevention
  
  

Discuss any alternative uses of metoprolol ER with your healthcare provider.

Metoprolol ER is available in the following dosage forms:

• Oral tablets: 25mg, 50mg, 100mg, 200mg
  
  

Generic versions of metoprolol ER are available, providing cost-effective treatment options.

Metoprolol ER is a prescription medication. You will need a valid prescription from a licensed healthcare provider to obtain this medication.