I'm from Australia where famotidine products are prescription medicines only. I went to a doctor to try and get a prescription for famotidine, but was shut down because I wanted famotidine for a purpose other than what it was intended for. For some reason I couldn't lie to the doctor (weird attack of conscience).
Anyway, I tried Zantac Extra Strength which is an over the counter drug here in Oz. 2 tablets, wait about 45 mins, and the effects of the Asian Blush are substantially reduced. I only get a little pink, not beet red, and more importantly the terrible headaches, racing heart, and cold feeling sensations after drinking are completely gone. I suffered terribly from these other problems (other than the redness) making drinking a real problem. For me, the redness was secondary to these other problems.
So, if you are having trouble getting famotidine, try Zantac Extra Strength. I don't know whether 2 tablets is a little extreme. But, it seems to be working for me. Aussies - definately try it if you can't get famotidine. It might help you too.
In the meantime, I've ordered some Pepcid AC off eBay. Will have to wait and see whether it gets through customs or not. Anyone else tried this successfully?
BTW - this website is sensational. So much good information.