Zantac causing acid?

Hi all,

My gastro gave me Zantac a few weeks ago to take alongside all the other stuff (motillium, gaviscon, losec). I was reluctant when he suggested it because I was in the emergency room a few days prior and was due for a dose of losec, but the hospital gave me zantac instead because they said it would kick in faster. about an hour later I was feeling really acidy. So I told my gastro this and he said there was no way it was the Zantac and it must have been from the painkillers I was given. So I have been taking it, yet almost every time I take it, about an hour or so afterwards I get heartburn, I should note here that it is rare for me to feel acid because I have silent reflux.

It seems counterproductive that a medication supposed to treat acid is causing acid, but I can't find any other cause for it. Has anyone else noticed this with Zantac?

I've been on my current course of losec for about 9 months now, and the coating of the capsules used to give me acid, but that seemed to only happen with the 20mgs, and I'm taking the 40mg now.

The way I take my meds is:
8am Losec 40mg
4pm Losec 40mg
Around 8-9pm Zantac 300mg and Motillium 10mg
Around 10-12pm Gaviscon 2 tabs.

The zantac and gaviscon are the only new additions to my regieme, in fact I'm on less motillium now. The acid hit I get after taking the Zantac doesn't last for ages, once I take the gaviscon it goes away and doesn't come back again until my next dose of Zantac.