Drug General Information (ID: DDI8UX1PSJ)
  Drug Name Digoxin Drug Info Trimethoprim Drug Info
  Drug Type Small molecule Small molecule
  Therapeutic Class Antiarrhythmic Agents Antiinfective Agents
  Structure

 Mechanism of Digoxin-Trimethoprim Interaction (Severity Level: Minor)
     Competitive inhibition of renal tubular secretion Click to Show/Hide Mechanism Graph
Could Not Find 2D Structure
      Drug Name Digoxin Trimethoprim
      Mechanism Digoxin Inhibition of the renal tubular secretion of digoxin
      Key Mechanism Factor 1
Factor Name Renal tubular secretion
Factor Description Renal tubular secretion allows selective transfer of substances from the blood around the capillaries into the renal tubules via filtrate. Drug excretion may be reduced when two drugs compete for renal tubular secretion.
      Mechanism Description
  • Decreased elimination of Digoxin caused by Trimethoprim mediated competitive inhibition of renal tubular secretion

References
1 Becquemont L, Verstuyft C, Kerb R, et al. "Effect of grapefruit juice on digoxin pharmacokinetics in humans." Clin Pharmacol Ther 70 (2001): 311-6. [PMID: 11673746]
2 Darcy PF "Nutrient-drug interactions." Adverse Drug React Toxicol Rev 14 (1995): 233-54. [PMID: 8845456]
3 Petersen P, Kastrup J, Bartram R, Hansen J "Digoxin-trimethoprim interaction." Acta Med Scand 217 (1985): 423-7