Old Wives Tales suggest that you eat as much food as you can, and another suggests drinking black coffee to sober a person up. Parts of this treatment work, and parts of it are ineffective. Headaches are the result of the constriction of blood vessels and lack of sufficient oxygen to the brain. Eating food will absorb some of the alcohol in the body, but will not prevent a hangover. Neither will drinking coffee which contains caffeine.
Caffeine is a stimulant, and a stimulant constricts blood vessels.
By attempting this method, you may end up with a worse headache. The best method for alleviating a headache is to either take acetaminophen, which is a muscle relaxer, or to keep yourself hydrated by drinking water. Home remedies even cover more serious ailments including epilepsy, and ulcers. To cure epilepsy, place the dried body of a frog in a silk bag and wear it around your neck. One cure that has been passed down and is recommended by herbalists is drinking tea brewed from mistletoe.