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Losartan can be administered once or twice daily at total daily doses of 25 to 100 mg. If the antihypertensive effect measured at trough using once-aday dosing is inadequate, a twice-a-day regimen at the same total daily dose or an increase in dose may give a more satisfactory response.
In general, the antihypertensive effect is attained within three to four weeks after initiation of therapy. Losartan potassium/Hydrochlorothiazide 100/12.5 (losartan 100 mg/ HCTZ 12.5 mg) is available for those patients titrated to 100 mg of Losartan potassium who require additional blood pressure control.See Sections 4.3, 4.4, 4.5 and 5.1). The usual maintenance dose of Losartan potassium/Hydrochlorothiazide is one tablet of Losartan potassium/Hydrochlorothiazide 50 mg/12.5 mg (losartan 50 mg/HCTZ 12.5 mg) once daily.