Before 25 I never had a hangover, not once. Even with partying usually 2 days a week. Then suddenly I started to have hangovers... By the 30 they were horrible pains in liver and stomach, I felt like I might actually die. Then at 33 it got very serious even without drinking, horrible stomach pains, even without drinking very bad stomach problems every week, I ate my fathers medicines. Then last spring at 34 I got last symptoms and off I went with ambulance to intensive care. my liver values were 1800% of the normal, skin and eyes yellow, pee red from red blood cells. Finally 10 days later my bile was removed. I rested for one full day and then I was up and already feeling healthier than ever. By that removal I felt that I can drink without as bad symptoms anymore. Yes I will get hangover when over doing it but it is nothing compared to what I was used to. Still I kept having problems with my bowels which leads to dehydration no matter if I drank 5 liters of water a day or more... After being about a year afraid constantly that I will shat my self. I talked with my sister who had earlier also bad stomach problems. So 2 weeks a go I left out gluten and started to be careful with milk products. That fixed my bowels almost immediately. If I eat wrong stuff I will pay for it the next 24 hours. So I am also only drinking gluten free beer after this and other spirits. Hangover ofcourse will come if I drink heavily... But I try to drink lots of water, also after I have stopped drinking alcohol I keep drinking water. I try to avoid using painkillers as some of them dont work for me and those that do are extra bad for liver, especially after already straining it with alcohol. Never drink to empty stomach if I am really going to hit it hard I try to make sure I eat big meal before starting.
MY suggestion is that even when going to be hammered, be smart with the water, during and after. Also eat good meal before starting to drink. And even if it is common in your country or place to get really wasted, try to retain some reasonability with in it. If you feel hungry when you stop drinking alcohol, go eat something fastfood it actually does good. Then keep drinking water until you fall in sleep. Also sleep as long as you can after waking up first time, if you wake up to pee, drink more, maybe headache pill if must, and go back to bed. Then when you start to be little bit past the worst, get out of the home go eat somewhere and get an easy walk outside, it will help you feel like human again. Keep drinking that water / sportsdrinks still.
One more thing I have never done drugs, never felt the urge or need to even try. I have seen many young people die. I have tried 2 times a marihuona, it affects me in very different way than anyone else I have seen. I dont get any of the initial "fun or relax" feeling but after 2 hours I start to get numb, starting from my feet and slowly rising all the way to my head, and I just am scared that I cant feel my face, and I am constantly worried that I will sleep and suffocate on my own tongue which I cant feel in my mouth. Then it just lasts hours like that trying to fight off the paranoia, extremely dry mouth and fear of dying by sleeping accidentally and swallowing my tongue. Also my feet cant hold me and my whole body will be very noncontrollable. I have read that some people intestines do attack thc way differently than normal peoples. It is very bad drug for me. I cant understand how it is legalized and kind of a laughing matter to people. I would rather drive a car for 50kms after 10 beers or a bottle of wine or half a bottle of vodka than just trying to survive in a city environment by foot after just one breath of smoke or half a bake. So kids: stay on alcohol. This is just my take on it.