I usually take 1 150mg zantac nowadays when I go out drinking. I used to take pepcid a/c, but it seems I built up a tollerance for it, (I used to drink 4 nights a week.) With zantac and pepcid sometimes I get a headache/hangover if I have 3-5 drinks, and sometimes it's completely fine. I've never paid attention to those 'don't eat this or that type of food' warnings some people post - that may be part of it.
I wouldn't put a lot of faith in Cheerz - the most impressive thing about them is their advertising force. If they spent the same amount of money they did on advertising and spamming on forums/blogs/message boards, then they might have a decent project. I know they say one doctor supports the product, but I seem to recall a time when the phrase "9 out 10 doctors support product X" was the standard. They don't show any peer-reviewed research about the effectiveness of the ingredients, and they don't have a "free trial." "Money back guarantee" in this day and age doesn't mean a thing - they offer it because they know you won't take the time to do this.
Sorry for the long rant, but I've been following this stuff for a while and I've seen what works, and what makes money - and a surprising amount of the time they are not the same.