Remedies for hangovers probably started the day after someone discovered the drinking of alcohol for pleasure and escape. Many of them have some pharmacological merit, but few really stand up to the rigors of modern science. One remedy that has gained clinical attention in recent years is the use of transdermal magnesium oil, which contains magnesium chloride. And science is giving this a tentative tick.
Every Thai grandma does it - massages some Ya Mong Yen (Thai cooling balm) into the temples at the first sign of a headache. But is there science to support this traditional Thai remedy?