LUTALYSE® INJECTION (dinoprost tromethamine injection)Most-used prostaglandin in the market1 LUTALYSE® Injection (dinoprost tromethamine injection) is the most 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 approved for use with LUTALYSE to synchronize estrous cycles in beef or dairy heifers and cows. LUTALYSE is the only prostaglandin approved to be used with EAZI-BREED™ CIDR® Cattle Inserts in beef and dairy heifers and cows. Zoetis is the world leader in cattle reproduction research and its products are supported by industry-leading sales and technical services.