What I recently discovered to avoid hangover is, before going to sleep, drink mefenamic acid after your drinking session. walang hang over. (thanks to the show Braniac) i tried it earlier, naginuman kame ng mga barkada ko after ng shift ko, then pag gising ko para pumasok ng 12am, wla akong hang over. pero di ko gina-guarantee kasi first time ko lang sinubukan effective. will try it more often para mapatunayan. try nyo rin, hehe.