As I understand it, Ornithine absorbs ammonia released during certain detoxes and also makes you drowsy. I can't find Ornithine so I take Melatonin tablets when I flush. Its a natural product the body produces and makes you sleepy. Since I am a light sleeper anyway, I need this to be able to relax when I flush. Many people don't need any thing though, and I kind of envy them. You can find Melatonin at Walmart and most places that sell herbs, it is not expensive.