Revalor-S is a subcutaneous cattle implant for feedlot steers (250–450 kg). Each implant contains 120 mg trenbolone acetate and 24 mg estradiol, delivered in 6 small yellow pellets. The box includes 10 cartridges of 10 implants to support feedlot operations and livestock health products programs. DIN 02078589. Prescription not required in Canada; prescription required in Quebec.