07:51 AM EDT, 10/27/2025 (MT Newswires) -- Elanco Animal Health ( ELAN ) said Monday the US Food and Drug Administration has approved expanded labels for its Credelio and Credelio Quattro parasiticides to include prevention of Lyme disease and treatment and control of longhorned tick infestations in dogs.

The company said both products showed 100% efficacy against longhorned ticks in published studies.

Shares of Elanco Animal Health ( ELAN ) were up 3.2% in recent Monday premarket activity.