Why can't I/my stomach handle Budweiser anymore...?
...I've been drinking it with over a year and really liked it but with about 2 weeks I just can't stand the taste and it's killing my stomach. For instance last night I had a pint of it and I nearly threw up after it. It couldn't have been too much drink because it was my first pint on the night. I was forced to stick to cider for the rest of the night, which went down well after my stomach settled down after the Bud.
So my question is why so can I/my stomach not handle Budweiser anymore? Thanks in advance.
Because it is too cold, too gassy and too nasty. You palate has now matured and you should try drinking some good beer.