Hello, I read carefully your query and understand your concern. Alcohol contains a chemical called ethanol. Ethanol s diuretic effects can also quickly dehydrate you, and a headache is just one of many symptoms of dehydration. In your bloodstream, ethanol can cause headaches through vasodilation. This means that it makes your blood vessel depend which can also cause headache. I recommend using anti inflammatory medications such as Acetaminophen three times per day for relieve. Hope my answer was helpful. If you have further queries feel free to contact me again. Kind regards! Dr.Dorina Gurabardhi General &Family Physician