system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 How do the medicines like paracetamol or ibuprofen work? Do they help the brain by making it ignore the pain (suppressing) or by actually fighting the cause of pain?
gpt
Ibuprofen works by stopping an enzyme from creating chemicals called prostaglandins that can cause pain and inflammation. Paracetamol does that a little bit too in your brain, but we don't completely know how it works.