3. Slow heart rate
Metoprolol is designed to slow the heart rate by blocking beta-adrenergic receptors, which decreases the heart’s workload and oxygen demand. However, if your heart rate becomes too slow (bradycardia), it might cause symptoms such as fatigue, weakness, or fainting spells.
Monitoring your pulse regularly—either at home with a heart rate monitor or during medical visits—is important. If you notice your resting heart rate consistently drops below 50 beats per minute or you experience dizziness or chest discomfort, alert your healthcare provider promptly. They may need to adjust the dose or consider alternative treatments.
4. Cold extremities
Feeling cold in your hands and feet can occur because metoprolol reduces blood flow to the peripheral tissues. This is due to the medication’s effect on narrowing blood vessels in the extremities, a common response with beta blockers.
Cold extremities are generally not harmful but can be uncomfortable. Wearing warm clothing, such as gloves and socks, and avoiding cold environments can help. If you experience persistent numbness, pain, or discoloration, notify your doctor, as these may indicate circulatory issues needing evaluation.
5. Shortness of breath
Some individuals taking metoprolol report mild shortness of breath, especially during physical exertion. Beta blockers can affect lung function by constricting airways in sensitive individuals, which may be more noticeable in those with asthma or chronic obstructive pulmonary disease (COPD).
If you have a history of respiratory conditions, inform your healthcare provider before starting metoprolol. Any new or worsening shortness of breath should be assessed promptly to ensure your treatment remains safe and effective.
