- High Blood Pressure Slideshow Pictures
- Take the Salt Quiz!
- Lowering Blood Pressure Exercise Tips Pictures
- What is betaxolol, and how does it work (mechanism of action)?
- What brand names are available for betaxolol?
- Is betaxolol available as a generic drug?
- Do I need a prescription for betaxolol?
- What are the side effects of betaxolol?
- What is the dosage for betaxolol?
- Which drugs or supplements interact with betaxolol?
- Is betaxolol safe to take if I'm pregnant or breastfeeding?
- What else should I know about betaxolol?
What is betaxolol, and how does it work (mechanism of action)?
Betaxolol is a beta-adrenergic blocking drug. The nerves of the sympathetic nervous system--a subdivision of the autonomic nervous system--release a chemical related to adrenaline that binds to the heart-rate controlling cells in the heart as well as the muscles of the heart. Binding causes the heart to beat faster and the muscles of the heart to contract more vigorously and work harder. Betaxolol blocks the binding of the adrenaline-like chemical and prevents the increases in heart rate and muscular contraction. As a result, blood pressure is lowered. By reducing the heart rate and muscular contraction, betaxolol also reduces the heart's need for oxygen to generate energy. Since angina pectoris (heart pain) occurs when the heart's need for oxygen is too great and exceeds the supply of oxygen, betaxolol can prevent angina pectoris. Betaxolol was approved by the FDA in 1985.
What brand names are available for betaxolol?
Kerlone (Discontinued Brand)
Is betaxolol available as a generic drug?
GENERIC AVAILABLE: Yes
Do I need a prescription for betaxolol?
What are the side effects of betaxolol?
Betaxolol generally is well tolerated, and side effects usually are mild and transient. Common side effects include:
- abdominal cramps,
- memory loss,
- slow heart rate,
- low blood pressure,
- cold extremities,
- sore throat, and
- shortness of breath or
In patients with existing slow heart rate (bradycardia) and heart block (defects in the electrical conduction of the heart), betaxolol can cause a dangerously slow heart rate and even shock. Betaxolol reduces the force of heart muscle contraction and can aggravate symptoms of heart failure. In patients with coronary artery disease, abruptly stopping betaxolol can suddenly worsen angina, and occasionally precipitate heart attacks. If it is necessary to discontinue betaxolol, its dosage should be reduced gradually over several weeks. Like all other beta-blockers, betaxolol can mask the early warning symptoms of low blood sugar (hypoglycemia) in people with diabetes and can increase or decrease blood sugar. Therefore, it should be used with caution in patients with diabetes.
Quick GuideHow to Lower Blood Pressure: Exercise Tips
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
Need help identifying pills and medications?
Use the pill identifier tool on RxList.