Which medication is NOT listed as a P-listed drug?

A medication that is classified as a P-listed drug indicates that it is acutely hazardous and can pose a risk to health and the environment if not managed properly. In this case, arsenic trioxide is considered a P-listed drug due to its toxicity and potential for causing severe health issues, while phentermine is not categorized as hazardous waste.

Nitroglycerin is also recognized for its potential hazards, particularly regarding its explosive qualities and health risks when inadequately handled. On the other hand, aspirin is not designated as a P-listed drug; it is widely used and deemed safe when used appropriately. Therefore, the identification of aspirin as the medication not listed amongst P-listed drugs highlights its relatively lower risk profile compared to the others mentioned. This classification informs healthcare professionals on proper handling, disposal, and safety protocols associated with these substances.