3. Slow Heart Rate (Bradycardia)
Metoprolol’s primary mechanism is to slow the heart rate, which reduces cardiac workload and oxygen demand. However, this effect can sometimes go beyond the intended level, causing bradycardia—a heart rate that is abnormally slow, typically below 60 beats per minute.
Symptoms of bradycardia include weakness, fatigue, dizziness, shortness of breath, or feeling faint. In some cases, very slow heart rates may lead to more serious complications, especially in patients with underlying heart conduction abnormalities.
Your healthcare provider may monitor your pulse regularly during treatment, particularly if you experience symptoms. Adjustments in dose or alternative medications might be necessary if bradycardia is significant.
4. Low Blood Pressure (Hypotension)
In addition to slowing the heart rate, metoprolol can lower blood pressure, sometimes causing hypotension. Low blood pressure may manifest as dizziness, blurred vision, weakness, or even fainting spells.
This side effect is most common during the initial treatment phase or following dose increases. Patients with pre-existing low blood pressure or dehydration are at higher risk.
Monitoring your blood pressure at home and reporting any severe or persistent symptoms to your doctor is important. They may recommend dose adjustments or additional interventions to maintain safe blood pressure levels.
5. Cold Hands and Feet
Many people taking metoprolol notice that their hands and feet feel colder than usual. This occurs because beta-blockers can constrict peripheral blood vessels, reducing blood flow to the extremities.
Some describe this sensation as numbness or tingling, resembling symptoms seen in conditions like Raynaud’s phenomenon. Although generally mild, these sensations can be uncomfortable, especially in cold weather.
Simple measures to alleviate cold extremities include:
- Wearing gloves and warm socks during colder seasons.
- Warming hands under warm running water.
- Avoiding exposure to cold environments when possible.
- Discussing persistent or painful symptoms with your healthcare provider.
