Please consult your physician before taking any medication. Brand name: Tenoretic Generic ingredients: Atenolol, Chlorthalidone Why is Tenoretic prescribed? Tenoretic is used in the treatment of high blood pressure. It combines a beta-blocker drug and a diuretic. Tenoretic can be used alone or in combination with other high blood pressure medications. Atenolol, the beta blocker, decreases the force and rate of heart contractions. Chlorthalidone, the diuretic, helps your body produce and eliminate more urine, which helps in lowering blood pressure. Tenoretic may also be used for purposes other than those listed in this medication guide.