New FDA Approval of Two Key Medications Used in Combination for Cattle Feeding

Pennchlor® and Rumensin® approved for use together

 Greenfield, IN and Wilmington, NC (Sept. 27, 2022) ­– For years, cattle producers have been looking for the benefits of therapeutic applications of chlortetracycline combined with the coccidiosis control and performance results of Rumensin for receiving/starter rations. Until now, they’ve had to choose one or the other. In late July, the Food and Drug Administration approved the combination use of Pennchlor (chlortetracycline Type A medicated article) and Rumensin (monensin Type A medicated article) in beef calves two months of age and older, and growing beef steers and heifers fed in confinement for slaughter. At a time when input costs, including feed, are at an all-time high, the ability to use these products in combination gives producers more options to improve the sustainability and efficiency of their business.

“We are very excited about the opportunity and flexibility this new combination claim provides feedlot operators and cattle producers,” said Ed Seed, vice president of global sales and marketing at Pharmgate Animal Health. “We’ve been working over the past month to make the updated labeling and Veterinary Feed Directive forms available to the cattle feed and veterinary industry and are now working collaboratively to roll this out more broadly.”

“This combination approval of Rumensin and Pennchlor gives producers options for their receiving program to optimize productivity,” adds Dr. Sara Linneen, Elanco beef nutrition technical consultant.

Contact your Elanco or Pharmgate representative for additional information or your cattle nutritionist. To access labeling or other forms go to

Rumensin, Elanco and the diagonal bar logo are trademarks of Elanco or its affiliates.

Pennchlor and Pharmgate are registered trademarks of Pharmgate, Inc.


@ 2022 Elanco.


About Pharmgate

Pharmgate Animal Health provides the livestock and poultry industry with a proven portfolio of technically supported, high-quality products that are the foundation of custom herd and flock health protocols. Founded in 2008, the company is headquartered in Wilmington, North Carolina, with FDA approved pharmaceutical production facilities in Omaha, Nebraska, and vaccine research and manufacturing operations in St. Paul, Minnesota. To learn more about Pharmgate Animal Health, or to find a local representative, visit


About Elanco

Elanco Animal Health (NYSE: ELAN) is a global leader in animal health dedicated to innovating and delivering products and services to prevent and treat disease in farm animals and pets, creating value for farmers, pet owners, veterinarians, stakeholders, and society as a whole. With nearly 70 years of animal health heritage, we are committed to helping our customers improve the health of animals in their care, while also making a meaningful impact on our local and global communities. At Elanco, we’re driven by our vision of Food and Companionship Enriching Life and our approach to sustainability, Elanco Healthy Purpose™– all to advance the health of animals, people, the planet and our enterprise. Learn more at