Drug General Information (ID: DDIWY5LOTE)
  Drug Name Allopurinol Drug Info Tamoxifen Drug Info
  Drug Type Small molecule Small molecule
  Therapeutic Class Antimetabolites Antineoplastics
  Structure

 Mechanism of Allopurinol-Tamoxifen Interaction (Severity Level: Minor)
     Increased risk of hepatotoxicity Click to Show/Hide Mechanism Graph
Could Not Find 2D Structure
      Drug Name Allopurinol Tamoxifen
      Mechanism Hepatotoxicity Hepatotoxicity
      Key Mechanism Factor 1
Factor Name Hepatotoxicity
Factor Description Combination of drugs that can induce hepatotoxicity may increase the risk of liver injury. Symptoms vary depending on the level of exposure and the total extent of liver damage, and may cause few symptoms if the damage is mild, and eventually lead to liver failure in patients with severe damage.
      Mechanism Description
  • Increased risk of hepatotoxicity by the combination of Allopurinol and Tamoxifen 

References
1 Shah KA, Levin J, Rosen N, Greenwald E, Zumoff B "Allopurinol hepatotoxicity potentiated by tamoxifen." N Y State J Med 82 (1982): 1745-6. [PMID: 6960280]