A client comes to the clinic complaining of epigastric pain. The client reportedly takes several nonprescription over-the-counter medications on a regular basis. Which drug identified by the nurse is most likely related to the client's current complaint?

C Nyquil (combination medication containing acetaminopharyngoclim, doxytamine, and pseudoephedrine), which the client takes to fall asleep B Aspirin, which the client takes for arthritis A Milk of magnesia, which the client takes for constipation D Benadryl (diphenhydramine), which the client takes for allergy symptoms