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← Compounds

Ketotifen

on-label Rx · comparatorFDA-approved

Mast-cell stabilization + H1 antagonism

Summary

Mast-cell stabilizer and H1 antihistamine; common MCAS adjunct.

How it works

  • Mast-cell stabilization
  • H1 antagonism

Dosing

  • unit: mg
    frequency: BID
    standard dose: 2
    administration route: Oral

Cycling

  • Continuous

Side effects

common: ["Sedation","Weight gain"]
warnings: []

Verified citations

2 · PubMed-checked
  • Ketotifen. A review of its pharmacodynamic and pharmacokinetic properties and use in allergic disorders.reviewPMID 2226222 ↗
  • Ketotifen is a Prodrug. Norketotifen is the active metabolite.mechanismPMID 34410005 ↗

Used for

No condition evidence rows yet.

Legal / compounding

FDA-approved

Legal status is a hard gate: non-compoundable or delisted agents cannot be filled and are blocked from protocol export. Keep 503A status current.