Ah well, scotchollie, you and I will disagree again. I am sorry you have had to suffer considerable pain, I really am - but look at your very first words - oooh Lordy. I am not sure Zantac would be my first choice for Gastritis! It's an antacid.
Saying this could only lead luckystrike to not only worry that his wife does not have gastritis but also that the doctor had made a complete mistake in prescribing Zantac for what he/she believes is gastritis. Not only that but that Zantac, in your view, should not be used for gastritis anyway - as it is an antacid - even when antacids are still the most common way of treating gastritis - at least to begin with.
You may think you have helped but if this had been me, I would only have been more worried after your post that the doctor had made a complete mistake. I know you will not see this but you have judged this case based purely on your own experiences - Zantac did not work for you, so other treatments should always be considered first, according to you. That is arrogance - you are not a health professional and should not be judging those who are.
I will not be coming back to this thread again as I know you would not agree with me on principle - but PLEASE think of the poster before airing views that are likely to bring MORE worry, rather than less.
Redcrx gave the perfect reply. If you had simply said words to the effect that you think the Zantac should have worked by now and as it hasn't, definitely go back to the GP, that would have been the perfect back up to redcrx. If you cannot see that is all that was needed to help luckystrike, then heaven help the next poor person you try to help.
I am sorry for your wife's troubles luckystrike and hope she gets well soon.