308 In the index

Andarine S-1 S-1

A product sold under a name suggesting it's related to andarine, though there's little independent information confirming exactly what it is. It's generally assumed to behave like andarine itself, without separate research backing it.

Also known as S1

Effects Build muscle

Routes Oral

Legal status Research chemical

WADA Banned at all times

3D Molecular Structure of C₁₉H₁₈F₃N₃O₆

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Chemistry

Formula: C19H18F3N3O6
Molar mass: 441.4
CAS: 401900-40-1
PubChem CID: 9824562

Reported dosing

User-reported

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

Typical dose Same range as Andarine (S-4): 25-50 mg/day

Reported range 25-75 mg/day

Route Oral

Frequency Once or twice daily

Duration 6-8 week cycles (unregulated use)

Naming overlaps with Andarine (S-4) in vendor catalogs; treat products listed this way with the same caution — unapproved, minimal human data.

Where this comes from User-reported/research-chemical vendor literature

There is no approved human dosing for this compound. The figures above are what users and vendors report, not what has been established as safe or effective. Treat them as a record of what is done, not as guidance.