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.
Baking Soda vs Baking Powder. While baking soda is strictly an alkaline compound, baking powder is sodium bicarbonate already combined with an acid. The acid compound in baking powder is in the form of a salt, which means it will not react with the base until a liquid is added. Baking soda is good to use in recipes which include other acidic ingredients. If a recipe does not contain enough acids, using baking powder is appropriate as it contains its own acid.