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Muscle building, steroids & SARMs

Stanozolol: Effects, Evidence and Risks

Research use only: Stanozolol is not approved as a medicine in Germany or the EU (approvals exist only in individual countries outside the EU). It is offered as a research substance labelled “for research purposes only – not for use in humans or animals”. This page summarises the state of research and is not a recommendation to use it.

Also known as Winstrol, Winstrol Depot, “Winny”.

StatusApproved outside the EU only
EvidenceSmall human studies
Drug classAnabolic-androgenic steroid (17α-alkylated, DHT derivative) · tablets, injectable suspension
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We only show doses for approved medicines according to the prescribing information – in the calculator.

What is Stanozolol?

Stanozolol is a synthetic DHT-derived steroid with an attached pyrazole ring. It is 17α-alkylated and therefore orally active, which puts particular strain on the liver. Medically it was used mainly for hereditary angioedema.

How well studied is Stanozolol?

Smaller clinical studies and long-term observations in hereditary angioedema; better-tolerated treatments exist today. No reliable studies on strength sports.

What side effects and risks does Stanozolol have?

Liver toxicity (jaundice, cholestasis, possible liver tumours with long use), marked worsening of blood lipids (HDL falls), cardiovascular risk. Suppression of the hormone axis and fertility; harmful to the unborn child; virilisation in women.

Is Stanozolol approved in Germany?

In short: no – only outside the EU. Withdrawn as a human medicine in the USA, not approved in Germany; still available in some other countries. WADA S1, one of the most common doping agents. Under Germany's Anti-Doping Act (AntiDopG), trading and supplying are prohibited, and even acquiring or possessing a “non-small quantity” (set by the Doping Substances Quantity Ordinance) is a criminal offence – including for recreational athletes and for personal use. Black-market products are frequently counterfeit, mislabelled or contaminated.

Sources

Note: We deliberately do not list any doses here. For approved medicines, your doctor sets the dose; for unapproved substances there is no reliable information.