SWIM just acquired a bottle of guaifenesin/codeine phsophate syrup. There's 180mL of syrup, with 2mg/mL codeine, bringing us to the grand total of 360mg of codeine in the syrup. Brand name is Cheratussin AC Syrup. How would SWIM go about extracting the codeine from this syrup? Checked TFSE, and the question has been asked, but never answered, as far as I could find.