LUTALYSE® Most-used prostaglandin in the market LUTALYSE® Injection (dinoprost tromethamine injection) is the most "veterinarian recommended" and "producer used" prostaglandin in the market.1 Artificial insemination synchronization programs with LUTALYSE can improve breeding success. Producers and veterinarians today have more options for using LUTALYSE in reproduction programs than ever before. FACTREL® Injection (gonadorelin injection) is now approved for use with LUTALYSE to synchronize estrous cycles to allow for fixed-time artificial insemination (FTAI) in lactating dairy cows. LUTALYSE is the only prostaglandin approved to be used with EAZI-BREED™ CIDR® Cattle Inserts in dairy heifers and dairy cows. Zoetis is the world leader in dairy reproduction research and support and its products are supported by industry-leading sales and technical services.