Yes, mass has mass. It is, therefore, matter. If mass did not have mass, then it is "something" with no mass. That would make it "non-matter" and perhaps it might be energy.
Acetaminophen is the drug in the brand "Tylenol". It is often combined with Codeine as "Tylenol #3", etc. Codeine is an ineffective pain-reliever according to the latest medical literature....