I'm not drinking any alcohol nowadays, but I remember from the past the following:

Disclaimer: This worked for me most of the time; it's not the golden recipe.

On the evening, after boozing, I had a glass of water before I went to bed. Not too much, otherwise I'd wake up in a swimming pool.

Morning after: depended on the stomach. Always coffee, black. If possible, a bit to eat; not too fat, but some calories were necessary to start me up again. Then more water and coffee. Around luch time, I was able to eat again, so I ate as much bread as possible.

When late in the afternoon (end of working day) the fatigue entered, we usually started to drink again.

Other people swore by Coca-Cola in large quantities, but it never worked for me. Fat food on the day after was usually also a no-go. I never ever took aspirin, ibuprofen or any other stuff.

All in all, I'm glad I can write this in the past tense.