* Wear warm socks or gloves when needed.
* Keep physically active.
* Avoid smoking, which can further reduce circulation.
Contact a doctor if your fingers or toes become very painful, unusually pale, blue, or numb.
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## 6. Sleep Problems or Vivid Dreams
Some people taking metoprolol report changes in sleep.
These may include:
* difficulty falling asleep
* waking frequently
* vivid dreams
* nightmares
* restless sleep
### What may help
Maintain a regular sleep schedule and avoid caffeine late in the day.
If sleep problems began soon after starting metoprolol and continue to interfere with daily life, mention them to your healthcare provider.
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Do not change the timing or dose without medical advice.
## 7. Shortness of Breath or Wheezing
Drugs & Medications
Metoprolol mainly affects receptors in the heart, but it can also affect the airways, particularly at higher doses.
People with asthma or chronic lung disease may be more sensitive.
### Watch for
* new wheezing
* chest tightness
* worsening breathlessness
* difficulty breathing during activity
New or worsening breathing symptoms should be discussed with a doctor.
Severe difficulty breathing requires urgent medical attention.
## 8. Digestive Problems
Respiratory Conditions
Metoprolol can sometimes cause gastrointestinal symptoms such as:
