Withdrawal of Approval of New Animal Drug Applications; Pyrantel; Tylosin; Tylosin and Sulfamethazine

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The Food and Drug Administration (FDA) is withdrawing approval of three new animal drug applications (NADAs) for intermediate premixes used to manufacture Type C medicated feeds. In a final rule published elsewhere in this issue of the Federal Register, FDA is amending the animal drug regulations to remove portions reflecting approval of these NADAs.