pure oxygen is very good for hangovers, we got an oxygen concentrator that we run a glass torch off of, suck off that for a while.
In my experiences any painkiller of a decent strength works great for hang overs also drink lots of water some weed always help to
I usually just drink my morning coffee (usually about 3-4 cups) and eat some toast with jelly on it and go back to sleep.
tons of water, advil if headache is present, and some food preferably meat or something with fat in it
when i've been drinking i have something to eat before going to bed, drink a couple cups of red bush tea & take a pint of water to bed with me. this usually stops me having a hangover. if i do still feel shit in the morning then a full english breakfast is the only thing that will see me right. bacon, eggs, shrooms, beans, chopped toms, maybe some linconshire sausage, plenty of toast & plenty of tea. yummy, i could just eat this now.