Taking losartan with other drugs that work in the same way may increase the chance of low blood pressure, high potassium levels ... Dosages range between 25 and 100 mg per day.
losartan potassium 50 mg plus hydrochlorothiazide 12.2 mg and losartan potassium 100 mg plus hydrochlorothiazide 25 mg). Use of the combination product may be appropriate if losartan monotherapy ...