Water.

Water is the safest and most accessible option for most people. People can try to drink water between alcoholic beverages, before they go to bed, and throughout the day after drinking.

Drinking sufficient amounts of water is vital for good health and can prevent dehydration.

Electrolyte drinks.

Drinking beverages containing electrolytes, such as sports drinks or broths, may help relieve some symptoms of a hangover. Research suggests that electrolyte-rich beverages can help people maintain hydration.

Teas.

Non-caffeinated teas are primarily water, so they may help a person hydrate. Some research also suggests that certain teas, such as green tea and honey chrysanthemum tea, may help the body process alcohol quicker and prevent damage to the liver.

Fruit, vegetable, herb, vitamin, and mineral drinks.

People may find relief from hangover symptoms after drinking certain fruit and vegetable juices, smoothies, or other beverages containing herbs, vitamins, and minerals.

Sources - https://www.medicalnewstoday.com/articles/hangover-cure-drink#what-can-affect-hangovers