GutGutGoose (YC S26) was featured in Forbes.

Every probiotic you've ever bought was built for the average gut. Not one was ever built for yours. GutGutGoose reads your gut at the DNA level and predicts which strains are most likely to integrate with the community already living in your gut - not just pass through it, and not the ones that look good on a label. That prediction is genuinely hard. Hard enough that the industry gave up and sold everyone the same bottle - the one you've been buying for years. We built the engine that does it. Then we check our work: re-sequence, re-formulate, and your formula gets sharper every cycle. A shelf can't do that. A guess can't either. We’re the only microbiome company that re-tests your gut as part of the subscription - so we can measure whether your strains actually colonise, not just assume they did. If we don’t see colonisation, we offer a full 180-day money-back guarantee No one-size-fits-all. No wellness fairy dust. Just the strains your data points to - and nothing it doesn't. You were never the problem. The guesswork was. We replaced it with your biology. Australian-built. Expanding to the US. Y Combinator S26. AI training infrastructure via custom probiotics. → Gutgutgoose.com