Animal Drugs, Feeds, and Related Products; Piperazine Adipate Powder, Diprenorphine Hydrochloride Injection, Etorphine Hydrochloride Injection, and Certain Nitrofuran and Buquinolate Products

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The Food and Drug Administration (FDA) is amending the animal drug regulations to remove those portions reflecting approval of 16 new animal drug applications (NADA's) held by Proctor & Gamble Pharmaceuticals, Inc., Happy Jack, Inc., and Lemmon Co. The NADA's provide for the use of piperazine adipate powder, diprenorphine hydrochloride (diprenorphine HCl) injection, etorphine HCl injection, certain nitrofuran dosage form products, and separately approved Type A medicated articles containing buquinolate or certain other drugs in manufacturing several Type C medicated feeds for chickens. In a notice published in the July 21, 1995, issue of the Federal Register, FDA is withdrawing approval of the NADA's.