Oxycodone is in Schedule I (derived from the Single Convention on Narcotic Drugs) of the Commonwealth's Narcotic Drugs Act 1967. In addition, it is in Schedule 8 of the Australian Standard for the Uniform Scheduling of Drugs and Poisons (Poisons Standard), meaning it is a controlled drug...
Substituting in Recipes. You can substitute baking powder in place of baking soda (you'll need more baking powder and it may affect the taste), but you can't use baking soda when a recipe calls for baking powder. Baking soda by itself lacks the acidity to make a cake rise. However, you can make your own baking powder if you have baking soda and cream of tartar. Simply mix two parts cream of tartar with one part baking soda.
So I usually double the baking powder the wheat based recipe calls for when cooking gluten free. If a recipe calls for baking soda that is not complimented with vinegar in the same recipe then I change it to baking powder. For example, some chocolate chip cookie recipes call for both baking soda and baking powder.