Deliver two doses in a single implant with REVALOR-XS for steers.

REVALOR-XS gives feedlot steers the exact dose they need, when they need it, to help them grow heavier throughout the entire finishing period. All without the work of re-implanting.

With the right implant now, you don’t have to re-implant later.

There’s no telling what “later” will bring. In 90 days, when it would typically be time to re-implant, the weather could turn. That’s just one of the many uncertainties associated with re-working cattle that REVALOR-XS can help eliminate.

Save on labor

Reduced stress on animals and staff

No reduced feed intake

Reduced risk from labor shortage

Reduced risk from weather

Peace of mind

Patented technology creates long-lasting performance and consistent growth.

Each REVALOR-XS implant consists of 10 pellets. Four uncoated pellets go to work immediately, while six coated pellets go to work 70-80 days later. The coated pellets are shielded by the patented X7™ polymer coating, which allows the second dose to slowly release, working like a re-implant.

No feed intake loss due to re-implanting.1

Reprocessing cattle can result in a feed intake decrease that can take 38 days to return to pre-reprocessing levels. With REVALOR-XS, there is no drop-off because cattle don’t have to be re-implanted.

A powerful initial – or only – implant.

REVALOR-XS outperforms some re-implanting programs when used as the only implant. However, steers show the greatest performance when enrolled in a re-implant program that starts with REVALOR-XS followed by REVALOR®-200 (trenbolone acetate and estradiol).2

Because REVALOR-XS produces the highest total gains when used as the initial or only implant, feedlot operators can be confident they’re in a profitable place even if re-implantation is impossible due to uncontrollable factors.

Dosage and Usage:

  • REVALOR-XS contains trenbolone acetate and estradiol in a slow-release delivery system which increases rate of weight gain and improves feed efficiency for up to 200 days in steers fed in confinement for slaughter
  • Each cartridge contains 10 implants
  • Each implant contains 200 mg of trenbolone acetate and 40 mg of estradiol
  • Only one REVALOR-XS implant should be administered to each animal

Implanting for Sustainability

Dr. Wade Nichols, senior technical services manager, discusses the technology behind REVALOR-XH and -XS that lets cattle stay in their pens and at the bunk, with no additional resource use.

Learn more about REVALOR-XS for steers and REVALOR-XH for heifers in the resources below.

REVALOR®-XS Detailer

Featuring data from studies conducted with 32,000 head of cattle in every major cattle feeding region in the U.S. and western Canada.


REVALOR-XS and -200 Technical Bulletin

See how REVALOR-XS performs as an initial implant as part of a re-implant program that uses REVALOR®-200 as the terminal implant.


REVALOR-XS and -XH Detailer

A comprehensive look at how REVALOR-XS and -XH can strengthen performance, while helping to minimize producer risk.


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1. Study Number HR-2S: Evaluation of Implants Containing Reduced-Dose Combinations of Trenbolone Acetate and Estradiol on Performance and Carcass Merit of Finishing Steers. 2. Data on File, Merck Animal Health

REVALOR-XS IMPORTANT SAFETY INFORMATION: A withdrawal period has not been established for Revalor in pre-ruminating calves. Do not use in calves to be processed for veal. Implant pellets in the ear only. Any other location is in violation of Federal Law. Do not attempt salvage of implanted site for human or animal food. For complete product information, refer to the product label.

Take a look at the other implant options available from Merck Animal Health.