As the name implies, rate control medications help slow your heart rate. However, they cannot restore a normal heart rhythm.
There are 3 main groups of medications in this category:
- Beta blockers
- Calcium channel blockers
- Digoxin
Which Medications Are Beta Blockers?
Beta blockers don’t slow the atrial fibrillation, but they slow the rate of the ventricles. This allows the ventricles more time to fill with blood before pumping it out to the body. In turn, this can help people feel better. They slow the heart rate by altering the heart’s electrical signals. Examples are:
- Atenolol (Tenormin)
- Bisoprolol (Zebeta, Ziac)
- Carvedilol (Coreg)
- Metoprolol (Lopressor, Toprol)
- Propranolol (Inderal, InnoPran, Pronol)
- Timolol (Blocadren)
What Are the Possible Side Effects of Beta Blockers?
- Fatigue
- Cold hands and/or feet
- Dizziness, lightheadedness, or weakness
- Dry mouth, eyes, and skin
Which Medications Are Calcium Channel Blockers?
Calcium channel blockers relax the blood vessels in the heart, which slows your heart rate. Examples are:
- Diltiazem (Cardizem, Cartia, Dilacor, Diltzac, Diltia, Tiazac)
- Verapamil (Calan, Covera-HS, Isoptin, Verelan)
What Are the Possible Side Effects of Calcium Channel Blockers?
- Feeling tired
- Red skin, flushing
- Dizziness or lightheadedness
- Weakness
- Swelling of the abdomen, ankles, or feet
- Constipation
- Heartburn
People taking calcium channel blockers should avoid grapefruit and grapefruit juice. These can interfere with the way the medication works.
What Is Digoxin?
Digoxin (Digox, Cardoxin, Digitek, Lanoxin) slows the rate of the electrical signals that travel from the atria down to the ventricles. Digoxin may be used in the hospital, when a person is having symptoms of atrial fibrillation. It is used less often as a long-term medication for heart rhythms.
What Are the Possible Side Effects of Digoxin?
- Nausea and vomiting
- Diarrhea
- Stomach pain
- Appetite loss
- Confusion
- Dizziness or lightheadedness
- Drowsiness
- Vision changes (blurred or yellow vision)
- Rash
- Slow or fast heartbeat