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| Oxandrolone Wikipedia | |||
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| Oxandrolone | |||
| <br>Oxandrolone is an oral anabolic-androgenic steroid (AAS) used in medical settings to treat specific conditions and promote muscle growth. It belongs to the 17-alpha-alkylated class of steroids, enhancing protein synthesis and nitrogen retention.<br> | |||
| Medical uses | |||
| <br>It is prescribed for cachexia associated with HIV/AIDS, chronic wasting diseases, recovery from burns/surgery, and osteoporosis. It may also be used off-label to stimulate appetite or treat growth failure in children.<br> | |||
| Non-medical uses | |||
| <br>In bodybuilding and athletics, oxandrolone is abused for enhancing muscle mass and strength despite health risks. Its lower androgenic effects compared to other steroids make it a preferred choice among some users.<br> | |||
| Contraindications | |||
| <br>Absolute contraindications include hypersensitivity, severe liver disease, undiagnosed breast/prostate cancer, and pregnancy (Category X). Relative risks exist for cardiovascular issues or hormonal disorders.<br> | |||
| Side effects | |||
| Hepatotoxicity: Jaundice, elevated liver enzymes | |||
| Androgenic effects: Acne, hirsutism, voice deepening (in females) | |||
| Circulatory: Thrombosis, hypertension | |||
| Endocrine: Testicular atrophy, menstrual irregularities | |||
| Interactions | |||
| <br>Potentiates effects of anticoagulants and insulin. Reduces efficacy of antiestrogens or aromatase inhibitors.<br> | |||
| Pharmacology | |||
| Pharmacodynamics | |||
| <br>Binds to androgen receptors to stimulate muscle protein synthesis, increase red blood cell count via erythropoiesis, and promote bone growth in pediatric patients.<br> | |||
| Steroid configuration | |||
| <br>Methylated at carbon 17 for oral bioavailability. Contains a double bond (delta-9) reducing androgenicity compared to testosterone.<br> | |||
| Pharmacokinetics | |||
| Oral Bioavailability:60–80% | |||
| Bioactive metabolites:Oxandrolone-17β-carboxylic acid | |||
| Half-life:8–9 hours | |||
| Metabolism:Liver via CYP3A4 | |||
| Chemistry | |||
| <br>Molecular formula: C20H28O2. Synthesized from dienedione precursors with a 17-methyl group for oral activity.<br> | |||
| History | |||
| <br>Developed by Searle in the 1950s as anabolic therapy. Approved by FDA in 1963 under brand name Oxandrin®. Widely studied in clinical trials for HIV-related weight loss during late-1980s AIDS epidemic.<br> | |||
| Society and culture | |||
| <br>In competitive sports, it is banned by WADA due to performance-enhancing properties. Public debates exist around its role in transgender hormone therapy versus doping risks.<br> | |||
| Generic names | |||
| <br>Oxandrolone (WHO INN), Oxanorol®.<br> | |||
| Brand names | |||
| Oxandrin® (United States) | |||
| Palboral® (Europe) | |||
| Availability | |||
| United States | |||
| <br>Sold as Oxandrin under prescription. Generic versions available since 2018 after patent expiration.<br> | |||
| Other countries | |||
| <br>Avaialble in pharmacies requiring doctor's approval across EU and Commonwealth nations. Black market trade prevalent in some regions.<br> | |||
| Legal status | |||
| <br>In the U.S., Schedule III under CSA (controlled substance). Internationally classified as a S4 drug under INCB treaties. Requires export/import permits under UN conventions.<br> | |||
| References | |||
| <br>Data compiled from FDA prescribing information, peer-reviewed journals, and clinical practice guidelines.<br> | |||
| External links | |||
| <br>National Library of Medicine Drug Portal ClinicalTrials.gov studies on HIV-associated wasting syndrome<br> | |||