Personally, I can't say that MJ has much of an effect on the actual GERD symptoms, one way of the other. I have much experience with serious gastro problems and GERD. I actually have the next step after GERD, which is Barrett's esophogus, pre-cancerous lesions.

My gall bladder was removed many moons ago, which helped somewhat. However, the ONLY thing that has actually healed the Barrett's condition and totally eliminated my GERD symptoms is Nexium. Neither Prilosec even when it was an Rx, nor any other Rx, nor any of the OTCs did anything much to help.

Nexium's biggest problem - it is hella expensive. Even insurance doesn't cover the major cost of this Rx.

So, even though I hate to recommend anything having to do with prescription drugs (bastards) or insurance (bigger bastards), that's my story. My advice is, if you can afford it, find a good gastroenterologist.