SWIM read a bunch of Cold water extraction of codine FAQS online and tryed it. Using a simple method, Crush Tylenol 3 with 300/30 mg. 8 Tabs. Stir into 1/4 cup of hot but not boiling water. Wait till room Temp. Place into freezer, wait until 19c or around 20 min, Filter and done. When I did this , the worst stomach pains followed. SWIM tryed again days later and same thing. I would like to know a better, simple extraction?