What is the difference between acetaminophen, ibuprofen, naproxen, and aspirin?

• Acetaminophen is the common name for N-acetyl-para-aminophenol (APAP). In other countries, it may be called paracetamol. It reduces pain signals in your nervous system and reduces fever. (Tylenol, etc.)
• Ibuprofen is an NSAID related to aspirin and naproxen. Like acetaminophen, NSAIDs reduce pain and fever. Ibuprofen also reduces inflammation. (Motrin, Advil, etc.)
• Naproxen is another NSAID. Like ibuprofen, it treats body aches, swelling, and fever. It lasts longer than ibuprofen but can start working more slowly. (Aleve)
• Aspirin is another NSAID that reduces fever and treats pain. It can also protect the heart in people who’ve had a heart attack or stroke, or who are at increased risk of cardiovascular disease. It’s more commonly used for its heart benefits versus pain relief.

For more information go (here) and (here). I’m not a doctor or offering any medical advice. This is just the answer to a question I had for myself. See your medical practitioner for advice on over-the-counter drugs.