Rumensin® for Cow-Calf Herds

Rumensin 90 bag

Rumensin® for Cow-Calf Herds

Rumensin improves average daily gain (ADG) in replacement heifers and improves feed efficiency in mature beef cows. Make Rumensin part of your cow-calf herd management plan. Use it to help optimize herd productivity, manage your forage supply throughout the year and prevent and control coccidiosis.

Key Product Benefits:

  • Helps maintain body weight for strong reproductive health
  • Cattle can eat less for reduced feed costs
  • No negative impacts on reproduction1
  • Prevents and controls coccidiosis2,3

Approved for Beef Cows

Rumensin improves feed efficiency in beef cows, reducing their feed requirements 5 to 10 percent while maintaining body weight with no negative impacts on reproductive performance.4 Rumensin also improves average daily gain in replacement heifers, resulting in fewer days to first estrus—which can result in improved lifetime productivity.5

Cow/Calf Icon
Feeding Rumensin

The only ionophore approved for mature, reproducing cows. Rumensin improves feed efficiency, reducing their feed requirements by 5% to 10% while maintaining body weight with no negative effects on reproductive performance.4 Improves average daily gain in replacement heifers, resulting in fewer days to first estrus, which can result in better lifetime productivity.5

Coccidiosis Icon
Coccidiosis Prevention and Control

The most potent feed ingredient available that kills coccidiosis parasites at three different stages of the life cycle instead of merely slowing development.3 More efficacious at lower doses compared to other ionophores.2

The label contains complete use information, including cautions and warnings. Always read, understand and follow the label and use directions.

CAUTION: Consumption by unapproved species or feeding undiluted may be toxic or fatal. Do not feed to veal calves.


Rumensin is a registered trademark of Elanco or its affiliates. Other company and product names are trademarks of their respective owners.