Hey I live in canada, and was reading on the new cannabis puffer that is coming to treat MS patients for pain and relief. Thats right, pot in a spray form so it does no damage to you lungs at all. Little do a lot of people know that one of the effects of this is that it acts like a bronchodiater. So you would have a pain relief, open you airways, better than ventolin, believe me. Not to mention an appetite increase.