 Trenbolone acetate was first synthesized in 1963 and approved by the livestock industry as a growth promoter for beef cattle in the early 1970s.During this period of its first administration, trenbolone acetate was sold under the names Finajet and Finaject.The original manufacturer of trenbolone acetate discontinued during the late 1980s and administered the synthesis of subcutaneous pellets called Finaplix.