I also have mixed results with Vitamin I. You can get them in 500mg tablets here and I only really take one when I'm desperate, but I find they work for some kinds of pain better than others.

Interesting info CorsairMac - people are popping them all the time over here. Some of my collegues will come into work a bit worse for wear from a night out and merrily pass the Ibruprofen round without a second thought. Not sure it's really designed as a hang over cure but doesn't seem to stop them. I guess if you're hung over and have to face a day at work then people will grab anything that might help.

LBTC - I'm not a medical professional of any kind but I believe excess calcium isn't too good for you. I think it's possible that it can build up in your kidneys. I might be wrong about this, so feel free anyone to put me right, but just a suspicion.