10 Important Side Effects of Metoprolol That You Need to Know

These symptoms may improve after the first days or weeks of treatment. If fatigue is severe or persistent, speak with your healthcare professional.

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2. Dizziness or Lightheadedness

Metoprolol can lower blood pressure and slow the heart rate, which may sometimes cause dizziness.

This may be more noticeable when:

standing up quickly
getting out of bed
exercising
starting treatment or increasing the dose

Standing up slowly can help reduce lightheadedness. Severe dizziness, fainting, or repeated near-fainting should be medically evaluated.

3. Slow Heart Rate

A slower pulse is an expected effect of beta blockers, but in some people the heart rate can become too slow.

Possible symptoms include:

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weakness
dizziness
unusual fatigue
fainting
shortness of breath

Do not change your dose based only on your pulse without medical advice. If you have symptoms together with a very slow heart rate, contact a healthcare professional promptly.

4. Low Blood Pressure