The U.S. Food and Drug Administration approved three new animal drugs for dogs, including a formulation of Novartis Animal Health’s Interceptor heartworm preventive, a transdermal fentanyl solution for control of postoperative pain and an antibiotic for treatment of secondary superficial bacterial pyoderma, the agency reported today. The FDA has approved three drugs for dogs Novartis received FDA approval for Interceptor Spectrum Chewable Tablets, which adds praziquantel to the milbemycin oxime found in original Interceptor Flavor Tabs. Praziquantel is an anthelmintic and is found in Virbac Animal Health’s Iverhart Max Chewable Tablets.