1967
  • Active ingredient monensin first discovered

1967
1975
  • Rumensin is approved by the FDA for feedlot cattle to improve feed efficiency

1975
1976
  • Rumensin 30 is introduced to help cattle producers improve feed efficiency

  • Elanco’s Feed Assay Service is first offered to producers, helping them to ensure proper levels of Rumensin are included in rations

1976
1979
  • Rumensin 60 is introduced with improved, granulated formula

1979
1983
  • Rumensin is approved for dairy and beef replacement heifers

1983
1988
  • Rumensin is approved for use in pasture animals and mature beef cows

1988
1990
  • Rumensin is approved for the prevention and control of coccidiosis in confined cattle and calves

1990
2004
  • Rumensin is approved for lactating and dry dairy cows

  • Rumensin is approved in combination with Optaflexx®, Tylan® and MGA®

2004
2016
  • Rumensin celebrates 40 years of helping cattle producers improve feed efficiency

  • Elanco Feed Mixing Study Service and Mixing Demonstrations introduced to assist producers with proper feed mixing and ration uniformity

2016

Elanco supports the use of shared class antibiotics for therapeutic uses while under the oversight of a veterinarian. More details on Elanco’s Antibiotic, Welfare and Sustainability Policies can be found on https://www.elanco.com/our-responsibilty#responsible-use-of-antibiotics.

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

Optaflexx: Caution: Not for animals intended for breeding.

Optaflexx: Complete feed For increased rate of weight gain and improved feed efficiency in cattle fed in confinement for slaughter: Feed 8.2 to 24.6 g/ton of ractopamine hydrochloride (90% DM basis) continuously in a complete feed to provide 70 to 430 mg/hd/d for the last 28 to 42 days on feed.

For increased rate of weight gain, improved feed efficiency and increased carcass leanness in cattle fed in confinement for slaughter: Feed 9.8 to 24.6 g/ton of ractopamine hydrochloride (90% DM basis) continuously in a complete feed to provide 90 to 430 mg/hd/d for the last 28 to 42 days on feed.

Optaflexx: Top dress For increased rate of weight gain and improved feed efficiency in cattle fed in confinement for slaughter: Feed 70 to 400 mg/hd/d of ractopamine hydrochloride (90% DM basis) continuously in a minimum of 1.0 lb/hd/d top dress Type C medicated feed (maximum 800 g/ton ractopamine hydrochloride) during the last 28 to 42 days on feed.

Rumensin CAUTION: Do not allow horses or other equines access to feeds containing monensin. Ingestion of monensin has been fatal. Do not feed to veal calves.

Rumensin: Cattle fed in confinement for slaughter

For improved feed efficiency: Feed 5 to 40 g/ton (90% DM basis) continuously in a complete feed to provide 50 to 480 mg/hd/d.

For the prevention and control of coccidiosis due to Eimeria bovis and Eimeria zuernii: Feed 10 to 40 g/ton (90% DM basis) continuously to provide 0.14 to 0.42 mg/lb of body weight/d, depending upon severity of challenge, up to a maximum of 480 mg/hd/d.

Rumensin: Growing cattle on pasture or in dry lot (stockers, feeders, and dairy and beef replacement heifers) For increased rate of weight gain: Feed 50 to 200 mg/hd/d in at least 1.0 lb of Type C medicated feed. Or, after the 5th day, feed 400 mg/hd/d every other day in at least 2.0 lbs of Type C medicated feed. The Type C medicated feed must contain 15 to 400 g/ton of monensin (90% DM basis). Do not self-feed.

For the prevention and control of coccidiosis due to Eimeria bovis and Eimeria zuernii: Feed at a rate to provide 0.14 to 0.42 mg/lb of body weight/d, depending upon severity of challenge, up to a maximum of 200 mg/hd/d. The Type C medicated feed must contain 15 to 400 g/ton (90% DM basis).

Free-Choice (Self-Fed) Medicated Feeds: Approved supplements must provide not less than 50 nor more than 200 mg/hd/d of monensin.

Rumensin: Mature reproducing beef cows

For improved feed efficiency when receiving supplemental feed: Feed continuously at a rate of 50 to 200 mg/hd/d. Cows on pasture or in dry lot must receive a minimum of 1.0 lb of Type C medicated feed/hd/d. Do not self-feed.

For the prevention and control of coccidiosis due to Eimeria bovis and Eimeria zuernii: Feed at a rate of 0.14 to 0.42 mg/lb of body weight/d, depending upon severity of challenge, up to a maximum of 200 mg/hd/d.

Rumensin: Calves (excluding veal calves)

For the prevention and control of coccidiosis due to Eimeria bovis and Eimeria zuernii: Feed at a rate of 0.14 to 1.0 mg/lb of body weight/d, depending upon severity of challenge, up to a maximum of 200 mg/hd/d. The Type C medicated feed must contain 10 to 200 g/ton of monensin (90% DM basis).

For Dairy Cows: For increased milk production efficiency Total Mixed Rations (complete feed): Feed continuously to dry and lactating dairy cows a total mixed ration (“complete feed”) containing 11 to 22 g/ton monensin on a 100% dry matter basis.

Rumensin Component Feeding Systems (including top dress): Feed continuously to dry and lactating cows a Type C Medicated Feed containing 11 to 400 g/ton monensin. The Type C Medicated Feed must be fed in a minimum of 1 pound of feed per cow per day to provide 185 to 660 mg/head/day monensin to lactating cows or 115 to 410 mg/head/day monensin to dry cows. This provides cows with similar amounts of monensin they would receive by consuming total mixed rations containing 11 to 22 g/ton monensin on a 100% dry matter basis.

Tylan CAUTION: Federal law restricts medicated feed containing this veterinary feed directive (VFD) drug to use by or on the order of a licensed veterinarian.

For reduction of incidence of liver abscesses associated with Fusobacterium necrophorum and Arcanobacterium pyogenes: Feed continuously as the sole ration at 8 to 10 g/ton of tylosin (90% DM basis) to provide 60 to 90 mg/hd/d.

Production of marketable solids-corrected milk per unit of feed intake.