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Non-steroidal anti-androgen

Bicalutamide

Brand names: Casodex

Adult dose

Dose: 50mg OD (advanced prostate cancer with LHRH); 150mg OD (locally advanced monotherapy)
Route: Oral
Frequency: OD

Clinical pearls

  • NICE NG131 prostate cancer: flare prevention with LHRH agonists; monotherapy in selected localised disease
  • ESMO / BAUS prostate cancer
  • Tamoxifen 20mg OD or breast irradiation prophylaxis for gynaecomastia (150mg dose)

Contraindications

  • Severe hepatic impairment
  • Pregnancy (no female indication)
  • Children
  • Hypersensitivity

Side effects

  • Gynaecomastia
  • Hot flushes
  • Erectile dysfunction
  • Hepatotoxicity
  • QT prolongation
  • Anaemia

Interactions

  • Warfarin (significant INR elevation)
  • CYP3A4 substrates
  • QT-prolonging drugs

Monitoring

  • LFTs
  • PSA
  • Testosterone
  • INR if on warfarin

Reference: BNF; NICE NG131; ESMO prostate cancer; BAUS; https://bnf.nice.org.uk/drugs/bicalutamide/. Verify against your local formulary and the latest BNF before prescribing.

Related

Curated clinical cross-links plus same-class fallbacks.