I really get fantastic pain relief for my lumbar spine with green dragon, I tried it at a dispensary in Denver and was a believer from that moment on. I live 3 hours from the metro and after that drive I went to a dispensary for some sort of relief from the damn pain,( Cannabis Medical ) I believe is the name of the place and the owner had me try a dropper under my tongue. In less than ten minutes my back pain was gone. It was a glycerin based tincture and I purchased a small bottle ( $25 at the time for what was probably a half fluid ounce ) and used until it was gone and worked well on my pain. When it was gone, a day or so later my pain started coming back hard and not wanting to drive 6-7 hours I looked it up on the net and found out how to make it, I use everclear or 151 and a bag of trim for $ 50.00, can produce a good 8-12 ounces for a very reasonable price. However I have noticed as well, the potency is really dependent on the quality of trim, if I can ever afford it I will make a batch out of good bud. With the pontency variation I just had to self titrate and adjust as needed based on the batch. I find I can function well, not much of a head high at all, but a fantastic pain relieving body high, but it is strange as it seems to have the best effect only on my back pain, some ( very little ) relief for my pains in other areas, and as a sleep aid, a dropper full before bed and I am out in 20 minutes for a decent nights sleep