Aspirin/Acetaminophen- Interactions and Warnings Aspirin/Acetaminophen – Interactions and Warnings Aspirin/Acetaminophen is a combination of the following drugs: Acetaminophen Nonsteroidal Anti-Inflammatory Drugs Please read the information for both of the listed drugs for potential warnings and interactions. Herbal Side Effects, Interactions and Warnings Supplement Side Effects, Interactions and Warnings Prescription Drug Interactions and Warnings Prescription Information Resources Disease Information last update: October 2008