Metoprolol is a beta-blocker commonly prescribed for conditions such as high blood pressure, angina, certain heart-rhythm problems, and other cardiovascular conditions. It works partly by slowing the heart rate and reducing the heart’s workload. nhs.uk
Not everyone experiences side effects, and many are mild or improve as the body adjusts. Here are 10 effects worth knowing about.
1. Unusual Tiredness
Metoprolol can make some people feel more tired or lacking in energy. This is among the recognized adverse effects of the medicine. nhs.uk+1
2. Dizziness or Lightheadedness
Because metoprolol can lower heart rate and blood pressure, some people experience dizziness or lightheadedness, particularly when starting treatment or after a dose change. nhs.uk
3. Cold Hands and Feet
Reduced peripheral circulation can leave the hands or feet feeling unusually cold. This is a recognized side effect of beta-blockers, including metoprolol. nhs.uk+1
4. Sleep Disturbances
Some people taking beta-blockers report insomnia or vivid dreams/nightmares. These effects aren’t experienced by everyone, but they can be bothersome when they occur. nhs.uk
5. Digestive Problems
Metoprolol can be associated with nausea, stomach discomfort, diarrhea, or vomiting. nhs.uk+1
6. Changes in Mood
Depression is listed among reported adverse reactions to metoprolol. If you notice persistent or significant changes in mood after starting the medication, discuss them with your healthcare professional. DailyMed
7. Shortness of Breath
Shortness of breath is listed among reported adverse reactions. Breathing difficulties deserve particular attention because they can also indicate an underlying heart or lung problem rather than simply a medication side effect. DailyMed
8. A Slower Heart Rate
Metoprolol is intentionally used to slow the heart rate, but excessive slowing can become problematic. Bradycardia is a recognized adverse reaction. DailyMed
9. Low Blood Pressure
Metoprolol can lower blood pressure. If the pressure becomes too low, symptoms such as weakness, dizziness, or faintness may occur. DailyMed
10. Sexual Side Effects
Some people report reduced sex drive or difficulty getting an erection while taking metoprolol. However, the NHS notes that this isn’t a common effect and that there isn’t enough evidence to establish that metoprolol is definitely responsible in every case. nhs.uk
Important Safety Point
Do not stop metoprolol suddenly on your own. Abrupt withdrawal can worsen the underlying heart condition and may increase the risk of cardiac problems. Talk with your doctor before changing or stopping the dose. DailyMed+1
Seek urgent medical attention for new or worsening chest pain, severe breathing difficulty, fainting, or significant swelling/shortness of breath, as these can indicate a serious problem. nhs.uk
If you’re experiencing a particular symptom while taking metoprolol, tell me the symptom, your dose (for example, 25 mg or 50 mg), and whether you’re taking metoprolol tartrate or succinate, and I can explain what it may mean.
