I frequently have kidney stones. Recently diagnosed stone in salivary gland. Could a blood pressure med be the causing a calcium excess. (Benazapril (20 mg/day), Nadolol 40 mg/day), Hydrochlorothiazide 12.5 mg/day, & Norvasc (5 mg/day) I drink a gallon of water a day, and 1 beer/week. Trying to find answer for calcium buidup. (stones)