I'll add to the yes vote. Although I didn't use it much, and it is legal here so nothing was stopping me, it's surely helpful for appetite issues. Can't speak to its nausea-abating properties.

I also know that some people here have had bad/ineffectual experiences with the synthetic version, which in the States is called Marinol. My RO prescribed it for me and I found it helpful, so if that's an avenue for you to pursue you might think about it.

As far as vaporizing vs. eating.... never tried the former but the latter seemed effective to me. Just don't smoke the stuff!