The U.S. Food and Drug Administration announced that Phibro Animal Health Corp. is withdrawing approval of New Animal Drug Application (NADA) 098-371 for the use of nicarbazin, penicillin and roxarsone in three-way, combination-drug Type C medicated feeds for broiler chickens. The company is also withdrawing NADA 098-374 for use of nicarbazin and penicillin in two-way, combination-drug Type C medicated feeds for broiler chickens.

Although Phibro Animal Health Corp. withdrew its approved NADA voluntarily because these products are no longer being manufactured or marketed, the decision to remove these antibiotic-containing feeds from the market for production purposes supports FDA's voluntary strategy for judicious use of antibiotics in food-producing animals.