Symptoms can include:
Unusual tiredness
Reduced exercise tolerance
Feeling weaker than usual
Daytime sleepiness
Sluggishness
For some patients, fatigue improves over the first days or weeks as the body adapts.
Persistent or severe exhaustion should be discussed with the prescribing clinician because other causes may also be involved, including anemia, thyroid disease, sleep disorders, low blood pressure, heart problems, depression, or interactions with other medicines.
Why Does Metoprolol Make Some People Feel Tired?
During physical activity, the body normally increases heart rate in response to increased demand.
A beta blocker limits this response.
Someone who previously relied on heart rate to judge exercise intensity may therefore notice that exercise feels different after starting metoprolol.
This does not necessarily mean exercise has become unsafe, but people with cardiovascular disease should follow individualized activity recommendations.
2. Dizziness or Lightheadedness
Metoprolol can lower blood pressure and slow the heart rate. Either effect can occasionally cause dizziness or lightheadedness.
