I have Chronic Myeloid Leukemia and I use RSO which is Rick Simpson Oil at night because it is THC and makes you high. Just so you know I dont do drugs so this RSO is for pain and sleep only. It takes the pain away and lets you sleep like a baby . You only need a rice grain dose as it is a very thick oil and its not that expensive . I don't like being high so its just a night time dose for me. If you can deal with the high feeling its the best thing for you because it kills cancer too. Seriously only a half inch on your finger and he will sleep very well with no pain.