Well, it may help you sleep through the night. The oil mix can sit heavy on your stomach and it can cause a lot of nausea, so being able to sleep through that is a major plus.
I have pretty high tolerance levels and have little trouble falling to sleep nowadays so I've never used it. If you get queasy easily or fear you'll be kept up either worrying or wondering "what's happening?!?" you may want to look into picking up a small bottle of ornithine for your first flush.
The most important parts of getting truly healthy are educating yourself and learning to really listen to your body and trust your own instincts. There is a LOT of information out there and much of it is conflicting. One thing I've noticed is the simplest and or cheapest is quite often the correct path for me. (Organic banana vs pop-tart, Liver Flushing vs gallbladder surgery, etc. etc.)