Dad's in his 60s, and has suffered with ankylosing spondylitis and related back pain for at least half his life. He's tried EVERYTHING from regular osteopath + chiropractor visits, acupuncture, a low-yeast diet, barefoot shoes...
Recently he's had trouble sleeping, too, and I'd like him to try CBD.
But there are so many brands out there I'm not sure where to start.
Can anyone recommend a rigorously-tested brand with excellent results for pain that isn't insanely expensive?
(Preferably something that doesn't have ganja leaves on the branding –he's open-minded but I think it'd put him off 
)