Is Stanozolol legal in the United Kingdom?

Best known from the 1988 Olympics, and its only real medical record is long-term use in hereditary angioedema, a rare disease where androgens work through a mechanism unrelated to muscle.

Stanozolol is the compound most people can name and least people understand, because its medical use has nothing to do with what it is famous for. In hereditary angioedema, a rare genetic disorder causing episodes of severe swelling, androgens have been used for decades because they raise hepatic production of C1 esterase inhibitor, the protein patients lack.

Mechanism: A synthetic derivative of dihydrotestosterone with a pyrazole ring fused to the A ring and a 17-alpha methyl group. The 17-alpha alkylation permits oral dosing and carries the liver risk characteristic of that structure.

Regulatory history: Previously FDA-approved for hereditary angioedema prophylaxis. Discontinued in the United States. Schedule III controlled substance.

Licenses medicines for the UK market. A compound without a marketing authorisation is an unlicensed medicine, which can only lawfully be supplied for human use through a prescriber under the specials scheme, not sold as a research product.

The classification above is the The Longevity Archive reading of Medicines and Healthcare products Regulatory Agency listings for Stanozolol at the reviewed date, not a legal opinion. Rules change, and importing, prescribing and possessing a compound can each be treated differently. Check the regulator directly before acting on anything here.