Examples
|
| Sectral | acebutolol |
| Tenormin | atenolol |
| Coreg | carvedilol |
| Lopressor, Toprol | metoprolol |
| Corgard | nadolol |
| Inderal | propranolol |
How It Works
Beta-blockers interrupt the normal
chemical signals transmitted by nerves that stimulate, and sometimes
overstimulate, the pacing of the heart. They slow down the heartbeat and reduce
blood pressure.
Why It Is Used
Beta-blockers are used for to relieve
symptoms of
or chest pain that might happen with this condition. Beta-blockers do not
improve the functioning of the mitral valve.
How Well It Works
- Beta-blockers prevent or inhibit several
specific types of irregular heart rhythms ().
- Beta-blockers relieve chest discomfort, especially in people who
have rapid resting heart rates.
Side Effects
All medicines have side effects. But many people don't feel the side effects, or they are able to deal with them. Ask your pharmacist about the side effects of each medicine you take. Side effects are also listed in the information that comes with your medicine.
Here are some important things to think about:
- Usually the benefits of the medicine are more important than any minor side effects.
- Side effects may go away after you take the medicine for a while.
- If side effects still bother you and you wonder if you should keep taking the medicine, call your doctor. He or she may be able to lower your dose or change your medicine. Do not suddenly quit taking your medicine unless your doctor tells you to.
Call 911 or other emergency services right away if you have:
- Trouble breathing.
- Hives.
- Swelling of your face, lips, tongue, or throat.
- Fainting or severe dizziness.
Call your doctor right away if you have:
- Very slow heart rate (less than 50 beats per minute).
- Swelling in legs or feet.
- Shortness of breath or wheezing, especially if you have asthma.
- Cold hands and feet.
Common side effects of this medicine include:
- Dizziness or lightheadedness.
- Feeling tired.
- Trouble sleeping.
See Drug Reference for a full list of side
effects. (Drug Reference is not available in all systems.)
What To Think About
Check your pulse. Your doctor may ask you to take your pulse regularly to make sure your heart rate is not too slow. To learn how to take your pulse, see the topic .
Diabetes. If you have diabetes, beta-blockers may cause higher blood sugar levels. Watch closely for symptoms of low blood sugar, because beta-blockers can hide your symptoms.