Hangover remedies from the National Institutes of Health - U.S. National Library of Medicine
Certain measures, such as fruit juice or honey, have been recommended to treat a hangover. But there is very little scientific evidence to show that such measures help. Recovery from a hangover is usually just a matter of time. Most hangovers are gone within 24 hours.
Electrolyte solutions (such as sports drinks) and bouillon soup are good for replacing the salt and potassium you lose from drinking alcohol.
Get plenty of rest. Even if you feel good the morning after heavy drinking, the lasting effects of alcohol reduce your ability to perform at your best.
Avoid taking any medicines for your hangover that contain acetaminophen (such as Tylenol). Acetaminophen may cause liver damage when combined with alcohol.