Factrel (gonadorelin hydrochloride injection) is a sterile solution of synthetic luteinizing hormone–releasing hormone (LRH) for intramuscular use in cattle. This veterinary prescription product is formulated at 50 mcg/mL and is available in 20 mL and 50 mL vials to suit cow, beef cattle, and dairy cattle operations. Designed for professional use, it supports herd protocols overseen by a veterinarian and fits seamlessly into on-farm livestock health products programs. From Zoetis, Factrel provides a ready-to-use solution for cattle where an IM LRH injection is indicated.