The symptom that you refer Asians as having is due to genetics. They do not metabolize alcohol as well as "Caucasians" due to genetic differences.
http://chemcases.com/alcohol/alc-06.htm
http://www.genesage.com/professional...ogenomics.html
The only pains I get from alcohol are headaches...
And UDI's of course.
Mr Mephisto