Expanded label for once-yearly parasiticide treatment for dogs now includes Haemaphysalis longicornis (Asian longhorned tick) and Amblyomma maculatum (Gulf Coast tick) for 12 months

Merck Animal Health, known as MSD Animal Health outside the United States and Canada, a division of Merck & Co., Inc., Rahway, N.J., USA (NYSE:MRK), today announced the U.S. Food and Drug Administration (FDA) approved an expanded label for BRAVECTO® QUANTUM (fluralaner for extended-release injectable suspension) in dogs. The updated indication adds treatment and control of Asian longhorned tick (H. longicornis) and Gulf Coast tick (A. maculatum) for 12 months, when administered as a single, veterinarian‑delivered injection.

BRAVECTO QUANTUM was approved in the U.S. on July 10, 2025, and continues to be indicated to kill adult fleas, for the treatment and prevention of flea infestations, and for the treatment and control of Ixodes scapularis, Dermacentor variabilis, and Rhipicephalus sanguineus infestations for 12 months and A. americanum infestations for 8 months in dogs and puppies 6 months of age and older.