Galanga, wich is a herb simmilar to ginger, well known in asian cooking from china to indonesia, is also an ancient folk medicine. It's sold in asian shops at very low prices and it is also sold in 'smartshops' as a herbal hallucinogen at much higher prices. I have never heard of any sedating or nauseating effects from it and it is used as a stimulant (one of the things it is used against as a medicine IS nausea) so maybe it doesn't even need a treatment with DMSO. It doesn't contain elemicin as far as i know, but it does contain galangol, alpinin, galangin, kaempferid. By the sound of it they seem simmilar substances.

I have often used it when cooking, but never in amounts large enough to get hallucinogenic effects from. It's taste is somewhere in between lemongras and ginger.

It would be great if you could just make tea of it and get the same results as with elemicin or acetone-washed calamus. I have some of it powdered and all, in a jar but i don't think it's enough to get results from.

Yet for stimulant effects it might do.