Unfortunately, I have no idea where the pain is located and that could have a huge bearing on the route of administration of the Cannabis. Cannabis salve is an excellent medication, it is not psychoactive, but stops the pain for approximately four to 6 hours. The salve maybe use liberally and it seems that the more you use it, the longer it lasts but I don't know that there are any studies to prove this. THCA is another excellent cannabis medication for pain and it is not psychoactive. I do not recommend THC edible even though it is cleared by the liver it can become much stronger, last longer then other routes of administration and it can makes a person feel generally bad or have bad dreams.