GENERIC NAME: atenolol and chlorthalidone
BRAND NAME: Tenoretic
DRUG CLASS AND MECHANISM: Atenolol/chlorthalidone is a combination of atenolol (Tenormin) and chlorthalidone (Hygroton) used for the treatment of high blood pressure. Atenolol is a beta-adrenergic blocking agent that blocks the effects of adrenergic drugs, for example, adrenaline or epinephrine, on nerves of the sympathetic nervous system. Atenolol reduces the heart rate and is useful in treating abnormally rapid heart rhythms. Atenolol also reduces the force of contraction of heart muscle and lowers blood pressure. Chlorthalidone is a diuretic (water pill). It works by reducing the kidneys' ability to hold on to salt and water and increasing the kidneys' production of urine (diuresis). It is used to eliminate excess salt and water from the body and to treat high blood pressure. The FDA approved atenolol/chlorthalidone in June 1984.
PRESCRIBED FOR: Atenolol/chlorthalidone is used to treat high blood pressure. Reducing blood pressure reduces the risk of strokes and heart attacks.
SIDE EFFECTS: Side effects of Atenolol/chlorthalidone are similar to side effects form the individual components and are:
- Loss of electrolytes
- Slow heart rate
- Low blood pressure
- Cold extremities
- Unusual dreams
- Sun sensitivity
Quick GuideLowering Blood Pressure Pictures Slideshow: Exercise Tips for Getting Started
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.