What is oxandrolone?
Anavar is listed as an entry term for oxandrolone in NLM MeSH. NLM oxandrolone entry terms.
Oxandrolone is a synthetic anabolic steroid hormone analogue of testosterone, according to the US National Cancer Institute. NCI oxandrolone definition.
Why did FDA issue an Oxandrin withdrawal determination?
In September 2023, FDA determined that Oxandrin oxandrolone tablets in the 2.5 mg and 10 mg strengths had been withdrawn from sale for reasons of safety or effectiveness. The named product, strengths and US determination are important: this is a specific regulatory record, rather than a comparison of every product carrying an oxandrolone name. FDA oxandrolone withdrawal determination (2023).
What safety concerns did the notice name?
FDA's discussion names peliosis hepatis, liver cell tumors and adverse blood-lipid changes. Those are concrete safety concerns in the oxandrolone product record; describing a substance only by its anabolic classification leaves them out. FDA oxandrolone withdrawal determination (2023).
The notice concerns the US product and its regulatory history. It does not establish Thai registration or authenticate an item offered by a different supplier. FDA oxandrolone withdrawal determination (2023).
Related steroid guides
For other topics in this library, see testosterone, nandrolone and the anabolics overview. Each guide should be read for its own named substance and evidence.
