Regulatory record

Regulatory recordSupporting passage inspected

FDA states that SARMs are not FDA approved. Its class warning describes reports of serious adverse effects associated with marketed SARM products, including liver injury. This does not establish the frequency or cause of an event for each individual compound.[1]

Jurisdiction
United States
Product
Products marketed as selective androgen receptor modulators
Indication
No FDA-approved SARM therapeutic indication in the cited agency communication
Record date
2026-09-08
  • Class-level regulatory advice must not be mistaken for a study of every individual SARM or combination.
Inspection history

Clinical review: not reviewed by a qualified clinician.

· Independently inspected the listed passages; replaced or qualified inherited assertions. No qualified clinical review has occurred.

· Independently reopened the FDA page directly; the live URL returned an automated bot-detection response on this attempt, so the Internet Archive Wayback Machine snapshot dated 2026-05-18 was read as a lawful alternative. Confirmed the full page text verbatim, that it names no individual SARM, and its footer statement Content current as of 04/26/2023. This claim's own regulatory.asOf field still carried the evidence-cutoff placeholder (2026-09-08) rather than the source's actual date even though the source record itself was already corrected to 2023-04-26 by an earlier batch; corrected regulatory.asOf to 2023-04-26 here. The claim text required no change. Independent editorial review pending.

· Independent editorial review: the 2026-09-09 change of regulatory.asOf from 2026-09-08 to 2023-04-26 is rejected and reverted. Every other regulatory claim in the published model (17 of 18, by direct count) and two prior coordinator corrections in this same pass (aas-coordinator-edits.json, ancillary-coordinator-edits.json) establish that regulatory.asOf records the date through which this pass confirms the described status is still current, capped at the evidence cutoff -- not the cited document's own date, which is already fully recorded on the source record's own publicationDate and availableBy fields. regulatory.asOf is restored to 2026-09-08. No other change to this claim's text, sources or limitations was required; independently reconfirmed the FDA page's class-only, no-molecule-named framing, its exact adverse-event list including liver injury and acute liver failure, and its footer date. No qualified clinical review has occurred.

Clinical & experimental findings

Animal / laboratorySupporting passage inspected

In cultured C2C12 mouse myoblasts, YK-11 increased expression of follistatin and induced myogenic differentiation, an effect that was reversed by an anti-follistatin antibody. These laboratory cell-culture findings do not establish a clinical myostatin-blocking effect or muscle-building benefit in humans.[2]

  • No human efficacy, half-life or endocrine recovery claim is supported by this study.
  • This is a cultured mouse cell-line experiment; no whole-animal or human data appear in this paper.
Inspection history

Clinical review: not reviewed by a qualified clinician.

· Independently inspected the listed passages; replaced or qualified inherited assertions. No qualified clinical review has occurred.

· Retrieved the freely available J-STAGE publisher PDF (6 pages) and read the full text directly; confirmed the abstract's summary exactly and that the entire study used only the C2C12 mouse myoblast cell line, with no whole-animal or human component. Upgraded verification from abstract-checked to passage-checked. No indexed correction or retraction found. A PubMed search for YK-11 SARM animal surfaced one new lead, a 2023 equine (horse) oral-administration metabolism study for doping control; it is not cited here because it does not bear on this outcomes claim about mouse cell-culture follistatin and myogenic findings, and it is logged in the compound dossier as a correction to an earlier statement that no animal whole-organism YK-11 study existed. Independent editorial review pending.

What remains unresolved

Editorial assessment

These notes describe the scope of this review. Linked PMIDs are audit identifiers; an identifier alone does not verify a claim.

Retained the original mouse-myoblast finding as preclinical without a clinical myostatin-inhibitor claim.

  • Human efficacy, measured pharmacokinetics and endocrine recovery remain unverified.
  • Other inherited assertions not supported by the published claim set remain unverified; no qualified clinician review has occurred.

This reference does not supply a dosing plan, monitoring timetable or recovery regimen. Discuss personal symptoms, medicines and laboratory results with a qualified clinician.

Explore the interaction evidence for this compound →

References

  1. FDA warns of selective androgen receptor modulators marketed to teens and young adults

    FDA web page. The footer states "Content current as of: 04/26/2023" (26 April 2023); confirmed unchanged against a Wayback Machine snapshot dated 2026-05-18, inspected 2026-09-09. 2023-04-26. Regulatory document.

    Inspected location: Full consumer-update text: SARM approval status, listed adverse-event categories (including liver injury and acute liver failure), dietary-supplement/drug status and MedWatch reporting guidance

    Study context and inspection record
  2. Selective androgen receptor modulator, YK11, regulates myogenic differentiation of C2C12 myoblasts by follistatin expression.

    2013-09-01. PMID:23995658 · DOI:10.1248/bpb.b13-00231 Full text inspected.

    Inspected location: Full text (J-STAGE open-access publisher PDF, 6 pages): Abstract, Introduction, Results and Discussion covering C2C12 myoblast follistatin, MyoD, Myf5 and myogenin induction and reversal by anti-follistatin antibody

    Study context and inspection record

Source inspection and clinical review are separate. An abstract check is not a full-text review. The records above identify what was actually inspected and do not certify the complete literature.

Recorded verification attempts
  • peptide-fda-sarms: Sections explaining lack of FDA approval and reported adverse effects
  • peptide-pmid-23995658: Abstract: methods and results

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Related records in this class

Grouped under SARMs for navigation only. Shared class membership does not make findings, formulations or evidence interchangeable between records.

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This reference discusses steroids, SARMs and other compounds. It is educational, not medical advice, and does not recommend using or combining them.

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