Revalor-XH is indicated for increased rate of weight gain and improved feed efficiency for up to 200 days after implantation in beef heifers fed in confinement for slaughter. Each extended-release implant contains 200 mg of trenbolone acetate and 20 mg estradiol in six coated and four uncoated pellets, each containing 20 mg trenbolone acetate and 2 mg estradiol.