Federal Register Final rule: FDA is amending the animal drug regulations to reflect approval of an Elanco Animal Health supplemental NADA that provides for minor revisions to labeling of monensin Type A medicated articles for chickens. FDA is also amending the regulations to simplify the organization of special labeling requirements for formulations (Type A medicated articles, Type B and Type C medicated feeds) containing monensin for poultry and game birds. To view this final rule, click here.