Essential generic antibiotic drug— The term essential generic antibiotic drug means an antibacterial or antifungal drug approved by the Food and Drug Administration under section 505(j) of the Federal Food, Drug, and Cosmetic Act (
21 U.S.C. 355(j)) that the Secretary determines to be medically necessary to have available at all times in an amount adequate to serve patient needs, including beta-lactams (including penicillin and cephalosporin derivatives) and non-beta lactams (including tetracycline and aminoglycoside derivatives).