# FDA Approves Generic Irbesartan from Hisun Pharmaceuticals USA Inc. The FDA has approved Hisun Pharmaceuticals USA Inc.'s generic formulation of irbesartan, an oral antihypertensive medication, potentially expanding treatment options and increasing price competition in the angiotensin II receptor blocker market. The approval of this widely-prescribed blood pressure medication is expected to provide cost savings for patients and insurers while capturing market share from existing brand and generic competitors.