I asked Brenda to explain the idea of stomach acid. This is what she wrote back and what is on her website.
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“The destruction of bacteria by the stomach acid is basic physiology. If you want to deliver more good bacteria to the intestine, you need to protect them on their way there.
Sometimes, with upper digestive issues like GERD, esophagitis, and others, probiotics are needed in the upper tract, so you wouldn’t want those to be coated. In that case, you want the probiotics (along with other reparative substances) to come in contact with the tissues – and in fact, I recommend in those cases, a powdered probiotic.”