May 31, 2007 Losartan is the first drug to be marketed within the ARB class and has been dose of one of the following ARBs: 20 mg olmesartan; 50 mg losartan; cuff sitting DBP during treatment with olmesartan would be 4.4, 3.8, and 3.0 .. they take once‐daily antihypertensive medication, and...