gerd
"My pregnancy has brought on horrible acid reflex. I spend most of my days puking acid, and being on fire. This occurs from NOT eating, AND eating. I've never experienced anything like this fire. I've tried Nexium, tums, Maalox. None helped me. I bought Zantac just two days ago, and its made a change. I still have to be very strict on timing, and what brings on even harsher acid. 
HERE IS THE ZANTAC STEPS THAT WORK FOR ME. 
Eat, and let the acid come on. I don't take it till my food has gone down a bit. Maybe 30 mins after. Its hard to stand the sizzle, but if I take it too soon, I don't feel it. 
So I take it with a small amount of water at first. 
It's pretty intense, but fast working."