Hi there Stannarad. I have stopped taking it for the timebeing, it was just making me so damn sick in the stomach. I have in the meantime been enquiring around the medical and alternative health industry here in Australia to see if someone can do the Heidleberg test. So far no-one has heard of it. I am reluctant to go back on the HCL without a positive diagnosis of low HCL production. The Baking Soda challenge seemed to indicate that I do have low HCL, but how accurate is this test? I am going around the bend at the moment. All I am taking right now is Threelac (yes I'm back to that again - more just to finish my supply off), fibre supplements, and am awaiting some North American Herbs And Spices Oregano Oil that I have recently ordered. But I know what will happen when I start the Oregano Oil, I will feel well on this for about 2 weeks then go downhill again. I am also going to try to supplement with Brewers Yeast starting this weekend and see how I feel. Yes I know it sounds crazy but I am going to head down this path to see if this helps. Some doctors do recommend it to people with Candida funnily enough (obviously only if not allergic to it).