Hyzaar is a combination medication containing 50mg Losartan Potassium and 12.5mg Hydrochlorothiazide used to treat high blood pressure. Each pack contains 30 tablets manufactured by Organon, designed for once-daily oral administration. Hyzaar works through two mechanisms - Losartan blocks the action of angiotensin II which causes blood vessels to narrow, while Hydrochlorothiazide is a diuretic that helps remove excess water and salt from the body. This dual action helps lower blood pressure effectively. The medication comes in a white box with blue and red branding, clearly displaying the dosage strength and tablet count. This is a prescription-only medication that should be taken under medical supervision.