I have also used Charlotte.s Web Hemp extract 15mg, successfully for chronic back pain. For me it's best to take the cbds 2X daily. I have also had satisfactory results by microdosing with Bluebird hemp classic 250+mg, (administered with a dropper; this one is an oil} and/or Herbal Renewals Easy Hemp Extract hemp oil spray, I also like shatter from medicalmaryjany on the board here. I had my doubts about marijuana being of much value flor chronic pain,so I was suprised how well CBDs work for my pain. I am actually having many pain free days now with a twice a day dose, but bI like the enhanced effect of a little THC with my CBDs,