It helps with the pain to get through the day. After taking for about 8 months due to back and neck problems, I'm trying to get through the day without. I've also had half of my colon removed due to cancer and was off work for 5 months. Now I have been working for 1 month now and the pain is pretty bad for the whole body. May need to take drug test and if possible I would like to have a clean test. How long does it take to have this drug out of your system? Thank you for the answer.