Systematic overview of co-proxamol to assess analgesic effects of addition of dextropropoxyphene to paracetamol

An error occurred in this paper by A Li Wan Po and W Y Zhang (13 December, pp 1565-71). Co-proxamol was incorrectly described as containing 650 mg paracetamol and 32.5 mg dextropropoxyphene hydrochloride. The third sentence of the introduction should have read: “Co-proxamol, a combination product containing 325 mg paracetamol and 32.5 mg dextropropoxyphene hydrochloride, was the most popular prescription, accounting for 35%.”