Daiichi Sankyo, Inc. announced today that the FDA approved TRIBENZORT (olmesartan medoxomil, amlodipine, hydrochlorothiazide), a new three-in-one combination product taken once-daily for the treatment of hypertension in patients who are not adequately controlled on any two of the following antihypertensive drug classes: angiotensin receptor blockers, calcium channel blockers and diuretics.