Less Time x More Productivity

Two doses of high-performance growth. One simple labor-saving application. That’s the power of X – REVALOR-XS for your confined-fed steers.

Looking for an implant made specifically for heifers?

All the performance.
None of the hassle.

With an additional 120 pounds live weight or 75 pounds in carcass weight average, REVALOR-XS delivers huge benefits versus non-implanted steers however or wherever you sell cattle.1,2 It can even outperform re-implanting.* All with a single application.

*REVALOR-IS and -S are not labeled for re-implanting under new guidance.

With the right implant now, you don’t have to worry about the hassle of re-implanting 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 or you could be shorthanded. That’s just a couple of the many uncertainties associated with reworking 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

Gain peace of mind

Don’t let re-implanting set cattle back.

Reprocessing cattle can result in a feed intake decrease that can take 38 days to return to pre-reprocessing levels.3 With REVALOR-XS, there is no drop-off because cattle don’t have to be re-implanted. So you keep all your gains.

Patented technology delivers the performance of a re-implant without the hassle.

Unlike other extended-release products, REVALOR-XS delivers two distinct doses appropriate for the growth phase of the animal.

Each implant consists of 10 pellets. Four uncoated pellets go to work immediately, while six X7™ polymer-coated pellets go to work 70-80 days later. This distinct and weight-appropriate second dose works like a re-implant – without the work, stress or risk of bringing cattle up.

Product Information


(trenbolone acetate and estradiol extended-release implants)

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.

Key Benefits

  • Formulated specifically for steers
  • No need to re-implant, so aids in compliance with new guidelines
  • Extra productivity with no additional resource use
  • Backed by extensive research and feeder support resources
  • Durable, intuitive design of the Rev-X™ Universal Implant Tool makes implanting easy  

Dosage and Usage

  • REVALOR-XS contains trenbolone acetate and estradiol in a slow-release delivery system that increases the 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


REVALOR-XS and -XH Detailer

Learn more about the proven performance of REVALOR-XS and -XH and calculate your potential cost savings of not re-implanting.


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Is a feedlot re-implant necessary? 

While a second dose is desirable to boost performance, re-implanting itself is not – which is why the implant you choose matters. With the right implant now, there’s no need to re-implant later.

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Important Safety Information

REVALOR-XS: Do not use in beef calves less than 2 months of age, dairy calves, and veal calves. A withdrawal period has not been established for this product in pre-ruminating calves. Do not use in dairy cows or in animals intended for subsequent breeding. Use in these cattle may cause drug residues in milk and/or in calves born to these cows. Implant pellets subcutaneously in ear only. Any other location is a violation of Federal law. Do not attempt salvage of implanted site for human or animal food. Not for use in humans. Keep out of reach of children. For complete safety information, refer to the product label.


  1. Parr SL, et al. Dose and release pattern of anabolic implants affects growth of finishing beef steers across days on feed. J Anim Sci. 2011;89(3):863-873.
  2. Parr SL, et al. Performance of finishing beef steers in response to anabolic implant and zilpaterol hydrochloride supplementation. J Anim Sci. 2011;89(2):560-570.
  3. Study Number HR-2S: Evaluation of Implants Containing Reduced-Dose Combinations of Trenbolone Acetate and Estradiol on Performance and Carcass Merit of Finishing Steers.