Eli5: How do pain meds work for different pains? Ie: Paracetamol vs Ibuprofen vs Codeine

Question

If the medicine disrupts the pain message between brain and nerve, how do different medicines do this differently?

In: 15

Answer 1

So ibuprofen is an anti-inflammatory so it reduces inflamation, and thus any pain caused by inflamation.

Codein meanwhile is a muscle relaxant and thus Stops muscle pain.

Paracetamol I can’t remember sorry, but that should be a start.

Generally painkillers don’t really stop the pain receptors, that’s what anaesthetic does