Legal since 2018, medical cannabis isn't a first-line treatment for arthritis....

https://highstylife.com/is-there-a-safe-way-to-explore-cannabis-for-arthritis-without-buying-illegally/

Legal since 2018, medical cannabis isn't a first-line treatment for arthritis. You’ll usually need to have tried other options before a specialist assessment. Most access is currently through private clinics. Please talk to a qualified professional.