Hydrochlorothiazide/losartan Prices. This hydrochlorothiazide/losartan price guide is based on using the Drugs.com discount card which is accepted at most U.S. pharmacies. The cost for hydrochlorothiazide/losartan oral tablet (12.5 mg-50 mg) is around $9 for a supply of 30 tablets, depending on the pharmacy you visit. Prices are for cash paying customers only and are not valid with insurance plans.