Muscle & Brawn 2.0 is live! New Tools, Voice Reader, Compound Index, Features and more on the way. Want to explore what’s new → Click Here
Independent & reader-supported — every article medically reviewed

Steroids / DHT derivatives

360 In the index

Calusterone CALU

A steroid pill once approved for treating breast cancer before being pulled from the market. Older trials supported its cancer-fighting use in that specific context, but it has no current medical use and no modern human research.

Also known as Methosarb

Effects Build muscle
Routes Oral
Legal status Controlled substance

3D Molecular Structure of C21H32O2

Drag to rotate · scroll to zoom

  • Carbon
  • Hydrogen
  • Oxygen

Chemistry

Formula
C21H32O2
Molar mass
316.5
CAS
17021-26-0
PubChem CID
28204

Reported dosing

Approved label

What has been reported in the literature and by users. This is a record of what is done, not a recommendation.

Typical dose Not established (discontinued/withdrawn)
Reported range Historical clinical dosing: 40-200 mg/day (oncology)
Route Oral
Frequency Divided doses, 2-4 times daily
Duration Chronic (historical oncology use)

Once FDA-approved for breast cancer (as Methosarb) but withdrawn from the US market; no current legitimate source.

Where this comes from Historical FDA-approved product labeling (discontinued)

These figures are recorded for reference and are not a recommendation. Dosing is a decision for you and a clinician.