Dizziness or lightheadedness is also common, particularly when standing up quickly. This is often related to a drop in blood pressure and usually improves over time.
Another expected effect is a slow heart rate. While this is part of how metoprolol works, an excessively slow pulse can cause weakness or fainting and should be reported to a doctor.
Circulation and Breathing Effects
Some people experience cold hands and feet, as beta-blockers can reduce blood flow to the extremities. This effect is usually mild but may be uncomfortable in colder climates. Shortness of breath can occur, especially in individuals with asthma or chronic lung conditions. Although metoprolol is considered more heart-selective than older beta-blockers, breathing symptoms should never be ignored.
Effects on Mood and Sleep
Metoprolol may affect the nervous system, leading to sleep disturbances, including insomnia or vivid dreams. These symptoms are generally temporary but can be bothersome for some patients.
Mood changes, such as feeling low, anxious, or depressed, have also been reported. While not everyone experiences this, long-term users should be mindful of emotional well-being and discuss changes with their healthcare provider.
Digestive and Sexual Side Effects
Digestive issues such as nausea, diarrhea, constipation, or stomach discomfort may occur, particularly when the medication is taken on an empty stomach. Some patients report sexual side effects, including reduced libido or erectile dysfunction. These effects can be distressing but are often manageable by adjusting the dose or switching medications under medical supervision.
