Alcoholic drinks that are easy on your stomach?

So every time I go out I usually drink beers 'til I'm starting to feel rather drunk, but not that I'll forget everything and go into a coma or something. Now the problem is, it takes about 10-12 beers to do that and the amount of beer seems to make my stomach feel bad the next day, just because of the amount of beer, not the alcohol in it. Now I'm looking for something alcoholic that I have to drink less of to have the same feeling and that's easy on your stomach. Any ideas?
Alcoholic drinks that are easy on your stomach?
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