I posted a long time ago about my concerns with HCL and gut flora.
No worries, I was only trying to figure out why HCL was giving me exacerbated symptoms at the time.
It was NOT due to the killing of beneficial flora.
It was certainly giving me die off symptoms, I started with too high of a dosage.
Starting small and working my way up over the course of a few weeks worked well. My stomach and small intestines were likely colonized though I’m not exactly sure what. My H. Pylori tests came back negative as well.
I don’t need HCL like I used to but now can take up to 5-15 pills and feel great.
Consider adding a good digestive enzyme and/or investigate food sensitivities.
Make sure to write down what you ate when your symptoms are at their worst. High fat meals? High protein? High Vegetable fiber? You may find some clues that way.
Also, HCL by Twin labs worked well for me.