Der er dog rapporteret minimal eller ingen effekt ved en dosis på 12, 5 mg, som findes i Irbesartan Hydrochlorothiazide Winthrop.
Increases in cholesterol and triglyceride levels have been associated with thiazide diuretic therapy; however at the 12.5 mg dose contained in Irbesartan Hydrochlorothiazide Winthrop, minimal or no effects were reported.