How to remove caffeine from codeine/caffeine solution

[Lesa]

Hello everyone,
SWIM has looked all over internet to find a way to get a pure codeine from pills or almost pure but had no luck. SWIM has pills that contain 5x caffeine as much as codeine(50,10, respectively) and after CWE SWIJ gets caffeine/codeine solution (filtered paracetamol etc...) and gets for a hit of 200mg codeine 1000mg of caffeine.That's way too much caffeine(I don't drink coffee at all). So If anyone can tell me how to filter that stupid caffeine and get the real thing he would be a god.