Some of these may surprise you, see;

http://www.rense.com/1.mpicons/acidalka.htm 

I had to undergo a test recently which meant I could not use anti-acid meds I take for a week for a condition I have.

Surprisingly, confining my food intake to the Alkaline food and drink got me through the week with very little reflux until I could have my test and start my meds again.....