Overview LUTALYSE® HighCon Injection (dinoprost tromthamine injection) is a high-concentration formula of the proven LUTALYSE Injection (dinoprost injection) used to help improve breeding efficiency in beef and dairy cattle. Like LUTALYSE, LUTALYSE® HighCon is approved for use with FACTREL® Injection (gonadorelin injection) to synchronize estrous cycles to allow for fixed- time artificial insemination (FTAI) in lacatin cows, for yielding higher pregancy rates and improved calving intervals.