Re: Gastritis and Omeprazole question...
Try Manuka Honey,
It's said to help just about everything. I have taken it on and off for various complaints and have to say it certainly gave me a good well feeling.
Look up diets for Gerd/Gastritis and find out what does or does not suit you.
Aloe-Vera is good for the digestion and some say ACV is good but I have never tried it myself.