Final answer:
APAP on a medication bottle stands for acetaminophen, which is also known as Tylenol, making option B the correct answer.
Step-by-step explanation:
When you encounter a medication bottle labeled as "APAP", it is referring to acetaminophen, or commonly known as Tylenol in the United States. Acetaminophen is an analgesic (pain reliever) and antipyretic (fever reducer). It is different from nonsteroidal anti-inflammatory drugs (NSAIDs) such as aspirin, ibuprofen, and naproxen, which also have anti-inflammatory properties. Acetaminophen is not an NSAID and works differently, primarily in the brain, to relieve pain and reduce fever. Therefore, the correct answer to what APAP stands for is B. Tylenol.