I'd think someone would have done that before. Personally I wouldn't mix smelly alcohol with wonderful shrooms. And I don't really look at caffine as a drug.. When I get stoned and have a pepsi or two, I wouldn't consider myself "on caffine". There could be some dangers, the first that comes to mind is dehydration from the alcohol and caffine but that might just mean a super shitty morning. But if you tone down your doses maybe you'd be ok.. Of course, the question arises of what's the point? I don't need anything more on shrooms, maybe a joint at the end or some bong hits to kick it up a notch. But hey, try it if it's your thing. :thumbsup: