Zestoretic 20mg is a prescription medication containing lisinopril and hydrochlorothiazide used to treat high blood pressure. Each pack contains 28 tablets manufactured by ATNAHS. The tablets combine an ACE inhibitor with a diuretic for effective blood pressure management. This medication contains two active ingredients: lisinopril (an ACE inhibitor) and hydrochlorothiazide (a diuretic). The combination works by helping blood vessels relax and removing excess fluid from the body. The tablets should be taken once daily with water, with or without food. As this is a prescription medication, it should only be taken under medical supervision and requires regular monitoring by a healthcare provider. Common side effects may include dizziness, especially when first starting treatment.