Corathon® is an insecticide cattle ear tag with FyberTek® for the control of flies and ticks on both beef cattle and non-lactating dairy cattle. Flies are a continuous threat to cattle producers because they can significantly impact the well-being and economic value of the herd. Flies interrupt grazing and can reduce weight gain. In fact, horn flies can reduce yearlings' weights by up to 18%.¹ Up to $68/head can be lost due to overpopulation of flies, and a total industry loss of $1 billion for the entire United States.² No producer wants to lose money, especially when there is a solution to the problem.² Beyond economics, flies impact cattle comfort and health and cause: * Agitation * Itching * Disease transmission * Bunching to avoid flies instead of grazing.  These impacts can reduce weight gain and milk production, making fly control ear tags an important part of a target control point fly mitigation and management program.  Elanco offers customized parasite solutions to control flies and a product line that fits with integrated rotation management (IRM) programs for all production styles. 

Key Product Benefits:

  • Controls pyrethroid-resistant and chlorinated hydrocarbon-resistant horn flies.
  • Controls face flies, the mechanical vector of Moraxella bovis, the bacteria that cause pink eye in cattle.
  • Ear tags with FyberTek, which allows for maximum insecticide holding capacity and even dispersion of the insecticide.
  • Can be used on beef and non-lactating dairy cattle.
  • Contains 50% organophosphate insecticide.
  • Utilizes the Allflex® Universal Total Tagger.

Package sizes 

  • One box contains two 10-tag pouches. 20 tags, 0.5 oz./tag.

Important Product Information 

Learn more about how to properly administer, store and use Corathon. See label for complete use guidelines, including all cautions and warnings. Always read, understand and follow the label and use directions.


Corathon is an insecticide cattle ear tag with FyberTek for the control of face flies, horn flies, Gulf Coast ticks and spinose ear ticks on both beef cattle and non-lactating dairy cattle.

1 Boxler, D. 2017. "Managing horn flies." University of Nebraska-Lincoln Beefwatch. Available at: Accessed December 5, 2017.

2 Simmons, N. June 2018. "Fly control is important for cattle herds over the summer." University of Florida Institute of Food and Agricultural Sciences Extension. Available at: Accessed October 1, 2019.