Producer
Bayer Animal Health (Elanco)
Elanco Animal Health Inc. (Greenfield, Indiana; NYSE: ELAN; ~$4.4B revenue) acquired Bayer Animal Health in 2020 for $7.6B, inheriting Bayer's veterinary antiparasitic portfolio including Advantage (imidacloprid topical flea treatment for cats and dogs) and Seresto (imidacloprid + flumethrin flea/tick collar). Imidacloprid in Advantage is the same active ingredient manufactured for agricultural seed treatment — the same chemical made by Bayer Crop Science, formulated at different concentrations for pet application. The Seresto collar generated significant US regulatory controversy in 2021 when EPA received reports of 1,698 pet deaths, 75,000 pet incidents, and 1,000 human incidents linked to the collar — triggering Congressional inquiries and an EPA review of imidacloprid safety in pet products.
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