trenbolone trenbolone trenbolone is an androgen and anabolic steroid (aas) of the nandrolone group which itself was never marketed. trenbolone ester prodrugs, including trenbolone acetate (brand names finajet, finaplix, others) and trenbolone hexahydrobenzylcarbonate (brand names parabolan, hexabolan), are or have been marketed for veterinary and clinical use. trenbolone acetate is used in veterinary medicine in livestock to increase muscle growth and appetite, while trenbolone hexahydrobenzylcarbonate was formerly used clinically in humans but is now no longer marketed. in addition, although it is not approved for clinical or veterinary use, trenbolone enanthate is sometimes sold on the black market under the nickname trenabol. a vial of injectable trenbolone acetate. not to be confused with trestolone. trenboloneclinical dataother namestrienolone; trienbolone; ru-2341; δ9,11-nandrolone; 19-nor-δ9,11-testosterone; estra-4,9,11-trien-17β-ol-3-oneahfs/drugs.cominternational drug namespregnancycategory x routes ofadministrationintramuscular injection (as esters)drug classandrogen; anabolic steroid; progestogenatc codenonelegal statuslegal status ca: schedule iv us: schedule iii pharmacokinetic databioavailabilityintramuscular: 100%metabolismliverelimination half-life6-8 hoursexcretionurineidentifiers iupac name (8s,13s,14s,17s)-17-hydroxy-13-methyl-2,6,7,8,14,15,16,17-octahydro-1h-cyclopentaphenanthren-3-one cas number10161-33-8 npubchem cid25015chemspider23383 yuniip53r4420trcomptox dashboard (epa)dtxsid0034192 echa infocard100.127.177 chemical and physical dataformulac18h22o2molar mass270.372 g·mol−13d model (jsmol)interactive image smiles o=c4\c=c2/c(=c1/c=c\3((o)cc31cc2)c)cc4 inchi inchi=1s/c18h22o2/c1-18-9-8-14-13-5-3-12(19)10-11(13)2-4-15(14)16(18)6-7-17(18)20/h8-10,15-17,20h,2-7h2,1h3/t15-,16+,17+,18+/m1/s1 ykey:mehhpfqkxouffv-owslcnjrsa-n y ny (what is this?) (verify) uses veterinary trenbolone, as trenbolone acetate, improves muscle mass, feed efficiency, and mineral absorption in cattle. side effects sometimes human users may experience an event called "tren cough" shortly after or during an injection, where the user experiences a violent and extreme coughing fit, which can last for minutes.