Co-proxamol is effective in chronic pain

Abstract
EDITOR—Li Wan Po and Zhang's review substantiates the widely held view that paracetamol is as effective as co-proxamol in single dose for acute pain.1 We agree with their message; indeed, another recent systematic review comes to the same conclusion.2 The authors dismiss comments we have made about the use of co-proxamol.3 However, our remarks related to the treatment of chronic pain, which cannot and should not be managed with …