As a matter of fact, you can make just about anything sublingually bioavailable when you suspend it in alcohol. Check this out
http://www.youtube.com/watch?v=Wqje5StAhCI. And the reason people would want to use a sublingual or intranasal ROA is because they are taking the cannabis to ease throat pain which is made worse by inhaling smoke. The reason they wouldn't just want to orally ingest cannabis is because cannabis absorbed in the gut has a very inconsistent bioavailability. Not to mention your dose has to be higher when you ingest, and you must commit yourself to a very long lasting effect, that maybe you don't have time for. In addition, THC causes delayed gastric emptying, and it causes the LES (lower esophageal sphincter) to relax. So your stomach is releasing more acid to deal with the food that is sitting in the stomach and is refluxing easily into your esophagus because your LES is relaxed and can't keep it out. This effect is made much worse by ingesting cannabis as it is directly absorbed into the gut and you are taking a much higher amount of THC than you would be if smoking or sublingually dosing.
So,,, I know that THC is readily absorbed into the mouth when it is in alcohol, I am asking if it would work any better if you sprayed it in your nostrils instead... or would the alcohol cause lots of burning to make it not worthwhile. I ask this because I have no experience with nasal administration for any substance.
As for the interest in how caspaicin can help headaches... Caspaicin is a vasodilater, meaning it dilates your blood vessels, many times when you have a headache your blood vessels constrict, causing further pain. In addition, your body responds to caspaicin as it would to a pain signal (even when it does not cause pain) and your body releases endorphins.
http://74.125.95.132/search?q=cache...rphins&cd=2&hl=en&ct=clnk&gl=us&client=safari
Oh, and THC is not only fat soluble, it is alcohol soluble as well.