He asks if there will be any drug interaction between two medicines.

他问两种药物之间是否会有药物相互作用。

Each has inadvertently created a drug interaction that could, in extreme cases, lead to kidney failure; liver damage; or internal bleeding.

每个人都在无意中创造了一种药物相互作用——在极端情况下，可能导致肾衰竭、肝损伤，或内出血。