Paul Saladino· MD
the best way and the only way to rejuvenate good bacteria is to use probiotics that are spore based because the only probiotics that literally can survive stomach acid are the spore based probiotics these are a variety of bacillus spores and the others like the lactobacillus and Bifidobacterium probiotics which are great they make lots of metabolites that get into your gut and do a lot of good things but those likely bacillus bacteria no bacteria are destroyed in the stomach acid so they cannot regenerate in the gut to get new renew germination of bacteria you need spore based probiotics and those four based probiotics also stimulate the rest of the commensal bacteria to increase in numbers and quantity and quality and and that's the way to regenerate that gut