Component E-C with Tylan is an implant for steers or heifers (including replacement heifers) from 45 days of age up to 400 lbs. Each dose contains 100 mg progesterone, 10 mg estradiol benzoate, and 29 mg tylosin tartrate. No slaughter withdrawal. Not approved for reimplantation with this or any other cattle ear implant prior to weaning.