Drug General Information (ID: DDIBFY1XE3)
  Drug Name Dexlansoprazole Drug Info Selpercatinib Drug Info
  Drug Type Small molecule Small molecule
  Therapeutic Class Proton Pump Inhibitors Antineoplastics
  Structure

 Mechanism of Dexlansoprazole-Selpercatinib Interaction (Severity Level: Major)
     Altered gastric pH Click to Show/Hide Mechanism Graph
Could Not Find 2D Structure
      Drug Name Dexlansoprazole Selpercatinib
      Mechanism Gastric alkalinizer Gastric pH sensitive
      Key Mechanism Factor 1
Factor Name Gastric pH
Factor Description The normal pH range of gastric acid is between 1.5 and 3.5 and is highly acidic, consisting mainly of hydrochloric acid. Changes in the pH of the stomach can alter the absorption of drugs.
      Mechanism Description
  • Decreased absorption of Selpercatinib due to altered gastric pH caused by Dexlansoprazole 

Recommended Action
      Management Concomitant use of selpercatinib with proton pump inhibitors should generally be avoided. If coadministration is required, the manufacturer recommends taking selpercatinib with food to minimize the clinical impact of the interaction.

References
1 Cerner Multum, Inc. "UK Summary of Product Characteristics.".
2 Product Information. Retevmo (selpercatinib). Lilly, Eli and Company, Indianapolis, IN.