>>386948452
Don't drink more than you're comfortable with. Hydrate. If you fuck up and get hung over, hydrate, caffeinate, rest up. Avoid paracetamol. To treat your hangover headache, if you're not allergic or have problems with blood coagulation, try aspirin. Eat something fatty beforehand. I suggest fried eggs, but do whatever you like.

Alternatively; man up and get over your hangover.