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Drug Interactions Nursing Mnemonic

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These Drugs Can Interact

  • T-Theophylline
  • D-Dilantin
  • C-Coumadin
  • I-llosone (Erythromycin)


Coumadin and ilosone: Ilosone can increase the effects of Coumadin, increase risk for bleeding. Coumadin and Dilantin: potential for increased effects of both. Coumadin and Dilantin: Increased Coumadin metabolism (decreased effect). Theophylline and Dilantin: if taken orally they can interfere with absorption of each other and decrease medication effect.