stanozolol stanozolol stanozolol (abbrev. stz), sold under many brand names, is an androgen and anabolic steroid (aas) medication derived from dihydrotestosterone (dht). it is used to treat hereditary angioedema. it was developed by american pharmaceutical company winthrop laboratories (sterling drug) in 1962, and has been approved by the u.s. food and drug administration for human use, though it is no longer marketed in the usa. it is also used in veterinary medicine. stanozolol has mostly been discontinued, and remains available in only a few countries. it is given by mouth in humans or by injection into muscle in animals. not to be confused with stanolone, stanozide, or winstan. stanozolol clinical datatrade nameswinstrol, stromba, othersother namesandrostanazol; androstanazole; stanazol; win-14833; nsc-43193; nsc-233046; 17α-methyl-2'h-5α-androst-2-enopyrazol-17β-ol; 17α-methylpyrazolo-5α-androstan-17β-olahfs/drugs.commultum consumer informationpregnancycategory x routes ofadministrationby mouth, intramuscular injection (veterinary)drug classandrogen; anabolic steroidatc codea14aa02 (who) legal statuslegal status ca: schedule iv us: schedule iii in general: ℞ (prescription only) pharmacokinetic databioavailabilityhighmetabolismliverelimination half-lifeoral: 9 hoursim: 24 hours (aq. susp.)duration of actionim: >1 weekexcretionurine: 84%identifiers iupac name (1s,3as,3br,5as,10as,10bs,12as)-1,10a,12a-trimethyl-1,2,3,3a,3b,4,5,5a,6,7,10,10a,10b,11,12,12a-hexadecahydrocyclopentanaphthoindazol-1-ol cas number10418-03-8 ypubchem cid25249drugbankdb06718 ychemspider23582 yunii4r1vb9p8v3keggd00444 ychebichebi:9249 ychemblchembl2079587 ycomptox dashboard (epa)dtxsid3044128 echa infocard100.030.801 chemical and physical dataformulac21h32n2omolar mass328.500 g·mol−13d model (jsmol)interactive image smiles 35cc2()1()cc(c)(o)1(c)cc2()3(c)cc4cnc4c5 inchi inchi=1s/c21h32n2o/c1-19-11-13-12-22-23-18(13)10-14(19)4-5-15-16(19)6-8-20(2)17(15)7-9-21(20,3)24/h12,14-17,24h,4-11h2,1-3h3,(h,22,23)/t14-,15+,16-,17-,19-,20-,21-/m0/s1 ykey:lkajkiofiwvmdj-iyrcevngsa-n y (verify) unlike most injectable aas, stanozolol is not esterified and is sold as an aqueous suspension, or in oral tablet form. the drug has a high oral bioavailability, due to a c17α alkylation which allows the hormone to survive first-pass liver metabolism when ingested. it is because of this that stanozolol is also sold in tablet form. stanozolol is one of the aas commonly used as performance-enhancing drugs and is banned from use in sports competition under the auspices of the international association of athletics federations (iaaf) and many other sporting bodies. it is an anabolic steroid that is known to have a diuretic effect. additionally, stanozolol has been highly restricted in us horse racing. medical uses stanozolol has been used with some success to treat venous insufficiency. it stimulates blood fibrinolysis and has been evaluated for the treatment of the more advanced skin changes in venous disease such as lipodermatosclerosis. several randomized trials noted improvement in the area of lipodermatosclerosis, reduced skin thickness, and possibly faster ulcer healing rates with stanozolol. it is also being studied to treat hereditary angioedema, osteoporosis, and skeletal muscle injury. non-medical uses stanozolol is used for physique- and performance-enhancing purposes by competitive athletes, bodybuilders, and powerlifters. side effects