Hi L, the answer is no you can't. 35% liquid hydrogen peroxide is so powerful it will burn your skin. Even a bit on your finger hurts. So, you sure cannot take it in its pure form on its own. It could burn your stomach. Before you use it you need to dilute it. Some people start with only 1 drop in a whole glass of water. Hydrogen peroxide can cause nausea if you get too much of it. Please be careful with it.