Efficacy and safety of oral naltrexone treatment for pruritus of cholestasis, a crossover, double blind, placebo-controlled study

J Hepatol. 2002 Dec;37(6):717-22. doi: 10.1016/s0168-8278(02)00318-5.

Abstract

Background/aims: To assess the efficacy and safety of naltrexone for the short and long term treatment of pruritus of cholestasis.

Methods: Twenty patients with pruritus and cholestasis were included. A baseline pruritus score was obtained over 1 week. Patients were then randomized to receive 50 mg/day of naltrexone or placebo for 2 weeks. Subsequently, a 1-week washout period ensued and patients were crossed over to the other therapy for 2 additional weeks. Pruritus was assessed daily with a visual analogue scale (VAS) from 0 to 10. Patients whose pruritus decreased >50% of basal with naltrexone received naltrexone 50 mg/day for 2 additional months.

Results: Mean basal VAS was similar in both groups. VAS showed greater and more significant changes with naltrexone than with placebo (P<0.0003). In nine out of 20 patients (45%) receiving naltrexone, pruritus decreased >50% compared to basal value, including five whose pruritus disappeared completely. No significant changes were observed in serum biochemistry. Most of the adverse events that occurred during the first 48 h of naltrexone therapy were consistent with opioid withdrawal-like phenomena and spontaneously disappeared 2 days after starting treatment.

Conclusions: Naltrexone can be considered as an alternative option to treat pruritus of cholestasis. In the current study, side effects were transient and did not require specific medication.

Publication types

  • Clinical Trial
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Administration, Oral
  • Adult
  • Aged
  • Cholestasis / complications*
  • Cross-Over Studies
  • Double-Blind Method
  • Drug Administration Schedule
  • Female
  • Humans
  • Male
  • Middle Aged
  • Naltrexone / administration & dosage*
  • Naltrexone / adverse effects*
  • Narcotic Antagonists / administration & dosage*
  • Narcotic Antagonists / adverse effects*
  • Pain Measurement
  • Pruritus / drug therapy*
  • Pruritus / etiology*
  • Pruritus / physiopathology
  • Safety

Substances

  • Narcotic Antagonists
  • Naltrexone