Nicotene and alcohol. Absolutely.<quoted text>
I don't know of it true efficacy for glaucoma, but you have a valid point about using it for anti-nausea. Inhalation also provides a quicker uptake than oral meds. In addition, it stimulates appetite.
Cigarettes aren't especially mood altering. You might get a little light headed, but you can get a similar sensation by hyperventilating.
If you ask most drug users what their first experience with a drug was, they are not unlikely to say smoking a joint - until you ask them if they'd ever stolen some shots from their parents' liquor cabinet or gotten an older friend to buy them a 6 pack. So what is the most common "gateway drug", after all?
I sensibly stopped there.