10 Common Side Effects of Metoprolol: What to Know
Metoprolol is a beta blocker commonly prescribed to treat:
- High blood pressure
- Angina (chest pain)
- Heart failure (certain forms)
- Fast or irregular heart rhythms
- To reduce the risk of future heart problems after a heart attack
Many people take metoprolol without significant side effects, but it’s helpful to know what to watch for.
1. 😴 Fatigue
Feeling more tired than usual is one of the most common side effects, especially when starting the medication or after a dose increase.
2. ❤️ Slow heart rate
Metoprolol lowers the heart rate. A slower pulse is expected, but if you experience severe dizziness, fainting, or an unusually slow heartbeat, contact your healthcare professional promptly.
3. 🧍 Dizziness or lightheadedness
This can happen because the medication lowers blood pressure. Standing up slowly from sitting or lying down may help.
4. 🥶 Cold hands and feet
Reduced blood flow to the extremities can make some people feel cold in their fingers or toes.
5. 🤢 Digestive upset
Some people experience:
- Nausea
- Diarrhea
- Constipation
- Stomach discomfort
These symptoms are often mild and temporary.
6. 😴 Sleep changes
Vivid dreams or trouble sleeping may occur in some people, although many people do not experience this.
7. 😮 Shortness of breath
Metoprolol can occasionally worsen breathing problems in people with asthma or certain other lung conditions. Contact your healthcare professional if you notice new or worsening wheezing or shortness of breath.
8. 😔 Mood changes
Some people report feeling depressed or less energetic. If you notice persistent mood changes, discuss them with your healthcare professional.
9. 🩸 Low blood pressure
Symptoms may include:
- Dizziness
- Blurred vision
- Feeling faint
Seek medical advice if these symptoms are severe or persistent.
10. 🔽 Sexual side effects
Some people experience reduced libido or erectile dysfunction, although these effects are not universal and can have other causes as well.
Important reminders
- Do not stop metoprolol suddenly. Abruptly stopping it can lead to a rapid increase in heart rate or blood pressure and may increase the risk of chest pain or heart attack. If it needs to be stopped, your healthcare professional will usually recommend gradually reducing the dose.
- Take it exactly as prescribed.
- If you miss a dose, follow your prescriber’s instructions or the medication guide—don’t double up unless you’ve been told to do so.
When to seek urgent medical care
Get immediate medical attention if you have:
- Fainting or severe dizziness
- Difficulty breathing
- Chest pain that is new or worsening
- Swelling of the face, lips, tongue, or throat (possible allergic reaction)
