You can buy codeine cough syrup in the state of TN OTC, but you have sign for it. The only problem is there are no drug stores that wants carry it. There is only one in my city that carries it. They have been around about 80 years. Whenever I have been sick and called and asked if they had it in stock it is always sold out. There is only a limited amount that they can order at a time, and when they get it in it goes fast. You almost have to be there when it comes in to get it. They said they don't know when it will show up.