I dearly wish that in all the MJ legalization that some company would start extracting the chemical pain reliever and the appetite stimulant. We reduced smoking at it would be nice to have these in other forms.
You can vaporize it or eat it for a similar (but different) effect. For treating pain, nausea and stimulating appetite, I am fine with marijuana. I've taken nausea medication, all of which stop working eventually. I fear that a dervived compound could be the same and could have the same problems Marinol did. I am all for research but for people suffering, I think they should be able to use marijuana if they want.
There are 66 cannabinoids and 480 known compounds in marijuana. It's hard to know exactly what is happening. I do support research for THC+CBD oil treatments to fight cancer cells. But if you are suffering through radiation or chemo, I would much rather have the full spectrum of marijuana to deal with it.
The problem is that, if you're using it as an anti-nausea drug, you really don't want to take a pill that you're just going to throw up again! You want another method of intake.
And it turns out that vaporization is not only better for cannabis but tobacco as well, hence the e-cigarette craze.