Merck Animal Health said the FDA approved an expanded label for Bravecto Quantum, an extended-release injectable for dogs. The label adds 12-month treatment and control of Asian longhorned tick and Gulf Coast tick following a single veterinarian-administered injection. Merck Animal Health said the product remains indicated for 12-month flea control and for several other tick species, with lone star tick coverage for 8 months. The company said Bravecto Quantum is available only through licensed veterinarians.

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