Low dose thiazide combined with a beta blocker.
D001262:Atenolol / Q000627:therapeutic use*; D002752:Chlorthalidone / Q000627:therapeutic use*; D004359:Drug Therapy, Combination; D006801:Humans; D006973:Hypertension / Q000188:drug therapy*; D011412:Propanolamines / Q000627:therapeutic use*
D011412:Propanolamines; D001262:Atenolol; D002752:Chlorthalidone