@grachelg If you do a search for low-acid coffee on Amazon there are a few. Dark roasted is lower acid than light or regular roast too. The roasting burns off the acid.

@januaryjane That amount of omeprazole is not too much for some conditions but it sounds as if you may have something else as @eden commented. After my Barrett's Esophagus was first diagnosed I was on 40 mg of omeprazole for a short time to get things under control, and then it was reduced to 20 mg.
JK