Beta Blocker Information

Beta blockers are medications that slow heart rate and decrease the force of heart contractions. "Medical News Today" reports that beta blockers mainly help lower the workload of a weakened heart in those who suffer from conditions that tax the heart, such as high blood pressure and heart failure.

Mechanism of Action

• Hormones such as norepinephrine and epinephrine (adrenaline) act by attaching to specific locations called beta receptors on nerve cells. Beta blockers hinder the actions of these hormones by blocking this binding action. Beta receptors occur in many types of tissues, including those of the heart, muscles and blood vessels, according to MedicineNet.com.

Uses

• The Cleveland Clinic states that doctors prescribe beta blockers to patients who suffer from conditions such as abnormal heart rhythms, high blood pressure, migraines and glaucoma. Beta blockers slow heart rate and relieve pressure on the blood vessels.

Side Effects

• The Mayo Clinic states that the use of beta blockers may result in undesirable effects such as fatigue and dizziness. Beta blockers infrequently cause sleeplessness, loss of libido and depression.

Considerations

• Asthma sufferers should not take beta blockers because, according to the Mayo Clinic, they may trigger severe asthma attacks. You may suffer a heart attack if you suddenly stop taking beta blockers. "Medical News Today" suggests you inform your doctor and pharmacist of any other drugs you currently take because of harmful drug interactions.