Gutgutgoose
Gutgutgoose is a YC Summer 2026 (S26) company. Based in San Francisco, CA, USA. Team of 2.
About Gutgutgoose
Summary
Gutgutgoose formulates personalized probiotics for consumers who want strains that will actually establish in their gut. Customers mail in a stool sample, which Gutgutgoose sequences and uses to build a metabolic model that identifies open colonization niches before selecting and blending the right strains. A follow-up sequencing at 90 days confirms what colonized and what shifted, replacing the guesswork of off-the-shelf probiotic supplements.
Business model
Customers pay for a test-and-formulate cycle that includes initial sequencing, a custom probiotic blend, and a 90-day re-sequencing.
Go-to-market
Direct-to-consumer: customers initiate the process by purchasing a stool-sample kit and mailing it in, with no intermediary required.
From the Y Combinator listing
Personalized probiotics, guaranteed to colonize.
Most data companies pay for their data. Ours pays for itself. Customers send us a stool sample. We sequence it, build a metabolic model of that gut, and simulate whether each probiotic strain has an open niche it can colonize. We formulate the best candidates, then re-sequence 90 days later to see what actually took hold and what changed. Each cycle gives us the baseline gut, the intervention, and the outcome. At scale, the endgame is models that predict chronic disease years before symptoms.
Facts
- Healthcare / Healthcare
- San Francisco, CA, USA
- 2
- Active
- Early
Founders (2)
- Leon Mojarrabi
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