Which one works better for muscle pain. naproxin or ibuprofen?

Either can: These are both non-steroidal anti-inflammatory medication. Either one has the potential to help. There is usually inter-patient variability which means you might respond more to one or the other. When taken for an extended period of time, you have to war h for stomach irritation and make sure your primary care provider knows to keep an eye out for other potential concerns with long term use.