I also can't drink most beer. I sometimes get a hangover and headache from just a single small beer (0.3 liter) I found that I tolerate beers from some breweri

I also can't drink most beer. I sometimes get a hangover and headache from just a single small beer (0.3 liter) I found that I tolerate beers from some breweries better than others (the type of beer doesn't seem to make a difference). I suspect that I am allergic to certain yeasts, but to be honest I have no idea.