FDA Authorizes Felixvet to Treat New World Screwworm in Pets 

Kansas City, Mo. — June 13, 2026 — Felixvet Inc. today announced that the U.S. Food and Drug Administration (FDA) has granted an Emergency Use Authorization (EUA) for Nitenpyram Tablets (nitenpyram) for the treatment of infestations caused by New World Screwworm (Cochliomyia hominivorax) larvae, also known as myiasis, in dogs, puppies, cats and kittens weighing at least two pounds and four weeks of age or older. 

According to the FDA, Nitenpyram Tablets are the first generic animal drug authorized for use against New World Screwworm, marking an important milestone in the ongoing effort to combat one of the most destructive animal parasites in the Western Hemisphere. The authorization comes as federal and state officials respond to the first confirmed domestic cases of New World Screwworm in the United States in more than six decades. 

Product Details 

New World Screwworm is a parasitic fly whose larvae infest living tissue, creating painful and potentially life-threatening wounds in animals. Unlike most fly larvae that feed on dead tissue, New World Screwworm larvae consume living flesh and can cause severe tissue damage if left untreated. The parasite poses a significant threat to livestock, pets, wildlife, and in rare cases, humans. 

The FDA concluded that, based on the totality of available scientific evidence, it is reasonable to believe that Nitenpyram Tablets may be effective for the treatment of New World Screwworm infestations in dogs and cats under the conditions outlined in the Emergency Use Authorization. The agency further determined that the known and potential benefits of the product outweigh its known and potential risks. 

Nitenpyram acts rapidly and is expected to kill most New World Screwworm larvae within hours of administration. The product is available over the counter and is supplied in two strengths: 

• 11.4 mg tablets 
• 57 mg tablets 

Dosage is based on body weight and is authorized for dogs, puppies, cats and kittens weighing at least two pounds and four weeks of age or older. Veterinarians may still recommend wound management, removal of remaining larvae, and additional follow-up care depending on the severity of the infestation. 

“Generic animal health products play an important role in ensuring access, availability, and preparedness,” added Lauren Landolph. “We’re honored that Nitenpyram Tablets can serve as an additional tool in the fight against New World Screwworm and help support veterinarians, pet owners, and animal health professionals working to protect companion animals.” 

The authorization follows broader federal efforts to monitor, contain, and prevent the spread of New World Screwworm across North America. Felixvet remains committed to supporting animal health through the development and commercialization of high-quality pharmaceutical products that address evolving veterinary needs. 

For additional information, please contact info@felixvet.com  

About Felixvet
Founded in 2015 by Dr. Shumeet Banerji, Jon Symonds and Neeraj Agrawal, Felix develops and commercializes high-quality, bioequivalent pharmaceutical products for companion animals. The company is focused on expanding access to FDA-approved veterinary medicines through a growing portfolio of trusted treatment options for veterinarians and pet owners. 

Media Contact:
Paula Flavin
Project/Marketing Manager
D: 1-816-912-2000
Email: info@felixvetus.com