Interaction Checker

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Carfentanil interactions

Wednesday 19 February 2020

Following review, the drugs listed below are now GREEN with carfentanil. These interactions were originally listed as RED due to the extreme danger of carfentanil use, however, no pharmacokinetic drug interaction exists, and carfentanil use should not be a barrier to treatment.


  • Adefovir
  • Daclatasvir
  • Entecavir
  • Lamivudine (HBV)
  • Obeticholic acid
  • Peginterferon alfa-2a
  • Peginterferon alfa-2b
  • Pembrolizumab
  • Ribavirin
  • Sofosbuvir
  • Sofosbuvir/velpatasvir
  • Sofosbuvir/velpatasvir/voxilaprevir
  • Tenofovir alafenamide
  • Tenofovir-DF (HBV)
  • Telbivudine
  • Ursodeoxycholic acid


Update: Interactions with glecaprevir/pibrentasvir, elbasvir/grazoprevir and simepravir are now AMBER. Ledipasvir/sofosbuvir is now GREEN.

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