Cylinder

Cylinder (operating at cylinderhealth.com, formerly Vivante Health) is a virtual-first digital health platform engineered to deliver personalized, end-to-end gastrointestinal (GI) and digestive care across all acuity levels. Founded in 2021 by CEO Bill Snyder and headquartered in Chicago, Illinois, Cylinder serves as an enterprise employer benefit and health plan partner addressing the estimated $136 billion annual US healthcare burden caused by chronic digestive conditions like IBS, GERD, IBD, and chronic constipation. Moving beyond fragmented specialist referrals, reactive ER visits, and isolated dietary apps, Cylinder provides a tech-enabled, whole-person care model that unites gastroenterologists, general practitioners, registered dietitians, and health coaches into a single, coordinated clinical workflow. Under the hood, its digital health platform pairs virtual care teams with smart symptom-tracking algorithms, personalized nutrition protocols, automated triage, and objective diagnostic tools like AI-driven stool scanning. What sets Cylinder apart is its proven enterprise ROI (demonstrating a 5:1 return on investment and 91% reported symptom improvement) by treating gut health as a foundational driver of systemic physical, mental, and metabolic health.