Eli Lilly, Elanco and Trifexis® (spinosad + milbemycin oxime).

Trifexis is made by Elanco, a global, innovation-driven company that develops and markets products to improve animal health production in more than 75 countries. Established in 1954 as a division of Eli Lilly and Company, Elanco Companion Animal Health enables veterinarians to help pets live longer, healthier, higher-quality lives. 

Elanco develops and delivers safe products for consumers, animals and the environment. All of our products conform to rigorous regulatory oversight and quality assurance systems that are built on consistency, dependability, accountability and traceability.

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