Quick Takeaways:
- The FDA has issued an Emergency Use Authorization (EUA) for generic Nitenpyram Tablets (nitenpyram) for the treatment of NWS infestations (myiasis) in dogs, puppies, cats, and kittens weighing ≥2 pounds and aged four weeks or older. Sponsored by Felix Pharmaceuticals, the product becomes the first generic animal drug authorized for use against NWS.
- NWS flies lay eggs in wounds or mucous membranes, with larvae rapidly burrowing into animal tissue after hatching. Nitenpyram acts quickly, killing most larvae within hours of the first dose, with a second dose recommended six hours later. However, the treatment is short-acting and does not prevent future infestations.
- According to the FDA, the authorization was supported by available scientific evidence indicating that the benefits of nitenpyram outweigh its potential risks in affected animals. Available over the counter in 11.4 mg and 57 mg tablet strengths, the treatment broadens access to an affordable option for pet owners in areas at risk of NWS infestations.
Why It Matters?
The FDA’s EUA for generic Nitenpyram Tablets creates an immediate, affordable, OTC treatment option for pet owners facing necrotizing worm (NWS) fly infestations in dogs, puppies, cats, and kittens ≥2 lb and ≥4 weeks old. This broadens access to a cost-effective, rapidly deployable therapy in NWS-risk areas, pressures any potential branded incumbents, and sets a precedent for EUA-driven generic animal drug deployment during public/animal health emergencies.
Source: US FDA
