I use 1 mm of tincture CBD oil and .3mm of the THC under my tongue every 4 hours when I am in bad pain. For regular inflammation pain, I use .7mm or more as needed and it really helps. When I had my Gamma brain surgery, the nurse told me to take it as you can't overdose on CBD. It has really helped me. I only buy it from a reputable company. My heart Dr. said pain damages the heart -I have AFIB and PVC's so I am trying to control it. If I don't take it, the pain gets away from me and I can barely move. I have severe osteo arthritis, RA, fibromyalgia, Sjogrens, and a low IgM. Since my immune system is so low, I can't take the usual drugs for arthritis. I just had an MRI that showed the arthritis is pushing on a nerve in my neck that is causing a continuous headache that goes up the side of my head. Truly medical marijuana helps a lot. I also have COPD- never smoked and asthma so I would never try the vaping. Good luck.