Medicação à base de codeína causando constipação

I recently injured my shoulder and have been put on 30/500mg cocodamol containing codeine along with ibuprofen. The good thing is they are great for the pain but they're making me extremely constipated. I've tried senakot tablets for a few days but they're doing nothing. Any suggestions?

Get an enema bag and take an old-fashioned soap suds enema.  That never fails, at least for me.  If you want specific directions, please let me know and I'll be happy to share with you what I do.

Used a glycerin suppository. Thanks for your advice though.

Great!  Sounds like it worked.  If it stops working, please feel free to get in touch with me.