high blood pressure
"Hydrochlorothiazide (HCTZ) didn't effect my blood pressure much at 12.5mg or 25mg.  It stayed around 145/95. When I added 10mg Lisinopril on top of 25mg HCTZ, it went to 120/85.  I don't know how much of the benefit comes from (HCTZ) and how much from Lisinopril.  I rate HCTZ high, though, because it's very inexpensive and caused no side effects."