3. coffee
Yes! Everybody's favorite (at least for 54% of Americans over the age of 18) breakfast juice DOES help aide in hangover, I mean headache, prevention. Caffeine is a vasoconstrictor, which is a fancy word for reducing the size of blood vessels. If seasonal allergies cause your headache, then coffee can decrease the release of histamine in your blood, the same drug found in over-the-counter drugs that reduce allergic reactions. Of course, too much coffee can have the opposite effect and cause a headache.