Ovarian cysts can be very disruptive in cattle. To help treat this condition, veterinarians may prescribe a course of this Cystorelin (Gonadorelin) Injection. Cystorelin contains a synthetic hormone which helps to clear up ovarian follicular cysts and their associated symptoms, such as nymphomania or irregular estrus. Packaged in a 30 mL vial, Cystorelin is easy-to-inject sterile solution that many vets and cattle ranchers rely on. FDA approved.