Yes, cannabis is among the substances I use when pain is bad. Actually tianeptine sodium is my first go to drug. It’s a novel tricyclic SSRE (opposite of an SSRI) and is the only substance on Earth documented as being effective against allodynia which is a good portion of my pain, but it isn’t available for doctors to prescribe in the US but it is also unscheduled so I mail order it as a powder and weigh it out on a gram scale. However, it has the downside of developing tolerance rapidly and also being fairly short acting. The short acting aspect of it used to be a problem but since switching from gabapentin to lyrica my flare-ups rarely last longer than four hours so it is most helpful. After that kratom gives the most bang in terms of pain relief with minimal loss of functionality. But like tianeptine, it also rapidly builds tolerance, so when these two fail then I go with weed. I can’t use that when I have to drive or be functional however.