Used in veterinary medicine as a long-acting estrogenic agent, primarily in livestock to promote growth and weight gain in beef cattle. It functions by stimulating protein synthesis and improving feed efficiency. Commonly administered via implant under the skin behind the ear, where it slowly releases active compounds into the bloodstream. Its extended release profile makes it suitable for sustained hormonal effects over several weeks. Also used in some cases for hormonal therapy in animals, particularly to manage reproductive disorders or control estrus cycles. Due to its anabolic effects, its use in food-producing animals is regulated in many countries to ensure residue levels remain within safe limits for human consumption.