# VSL3 (VSL#3 / VSL Probiotics)
> VSL#3 is a high-potency probiotic medical food specifically formulated for the dietary management of Irritable Bowel Syndrome (IBS) and Ulcerative Colitis (UC). The brand offers ultra-high-potency multi-strain formulations that are refrigerated to maintain viability and are widely recommended by gastroenterologists. Building on its clinical heritage, the brand has recently expanded into daily wellness supplements with its VSL4 line.
- URL: https://optimly.ai/brand/vsl3
- Slug: vsl3
- BAI Score: 82/100
- Archetype: Challenger
- Category: Health & Wellness
- Last Analyzed: May 3, 2026