a. 15 g tea infused in boiling water for 10 minutes. Drink a large cupful.
b. Put 15 g of withe sugar in 30 ml vinegar. Dilute with hot water, and when the sugar has completely dissolved drink.
c. Take 60. g black soya beans. Add a suitable amount of water and heat until boiling, then drink.

Reference:
Eating Your Way to Health: Dietotheraphy in Traditional Chinese Medicine
P. 66
ISBN 711901885X

My personal tips in order to avoid a severe hangover after a drinking binge:
(water, protein, sugar, salt, vitamins)

Drink a large amount of water
Eat a protein rich snack (ex. eggs and bacon, herring or salmon)
Spice with salt
Take a vitamin pill or a vitamin C
Drink Orange Juice

The body should of curse rest (sleep) to be able to recuperate properly. Drink 2 big glasses of water before going to bed.

The day after. Some light exercise and appropriate massage to relieve tensions may be in place after the circumstances. Some people feel that a walk helps. And my girlfriend recommends a warmth foot bath with herbs against colds and others symptoms of discomfort.

Links:
Hangover wikipedia.org