. Sip water or fruit juice to prevent dehydration. Resist any temptation to treat your hangover with more alcohol. It'll only make you feel worse.
Have a snack. Bland foods, such as toast and crackers, may boost your blood sugar and settle your stomach. Bouillon soup can help replace lost salt and potassium. Foods and drinks that contain fructose, such as honey or fruit juice, may help your body burn the alcohol faster.
Take a pain reliever. A small dose of an over-the-counter pain reliever may ease your headache. But there are a few caveats. Aspirin can irritate your stomach. And if you sometimes drink alcohol to excess, acetaminophen (Tylenol, others) can cause severe liver damage even in doses previously thought to be safe.
Go back to bed. If you sleep long enough, your hangover may be gone when you awaken.

This should help for 'Pepsi" Problem.

Drinking lots and lots of water would be the logical thing to do.

You drank too much Pepsi? How are you going to feel bad about that?

Have lots of water, eat some food (Only if your in the mood) Sleeping also helps. Low energy activities such as what your currently doing e.g laptop/PC, gaming etc.

Have a great Christmas party!

Bacon... Bacon is a cure for everything.
Just don't drink anything else this morning. Try and drink water and eat something.

TBT wrote . Sip water or fruit juice to prevent dehydration. Resist any temptation to treat your hangover with more alcohol. It'll only make you feel worse.
Have a snack. Bland foods, such as toast and crackers, may boost your blood sugar and settle your stomach. Bouillon soup can help replace lost salt and potassium. Foods and drinks that contain fructose, such as honey or fruit juice, may help your body burn the alcohol faster.
Take a pain reliever. A small dose of an over-the-counter pain reliever may ease your headache. But there are a few caveats. Aspirin can irritate your stomach. And if you sometimes drink alcohol to excess, acetaminophen (Tylenol, others) can cause severe liver damage even in doses previously thought to be safe.
Go back to bed. If you sleep long enough, your hangover may be gone when you awaken.

This should help for 'Pepsi" Problem.

Thanks I will try that, I just don't feel good whatsoever.

Drink some water and maybe have some sleep.
PS - Dont drink too too much water.

Your telling lies. Why bring this up on TTG ? You should know what to do, not looking for other peoples advice.