##  [Drug–Drug Interaction](/index.php/drug-drug-interaction) 

  ##  [Drug–Drug Interaction](https://health.quantumdictionary.io/drug-drug-interaction-0) 

  

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**Health & Life Sciences Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A pharmacological interaction in which one drug alters the effect, exposure (pharmacokinetics) or toxicity (pharmacodynamics or adverse-effect profile) of another when both are co‑administered, such that the clinical effect, required dose or risk profile of one or both agents is materially changed.