For more than 20 years, VSL Probiotics has set the benchmark in microbiome science, formulating high-strength, multi-strain probiotics trusted by leading gastroenterologists. With globally recognized products like VSL#3® and VSL4™ Gut, we fuse clinical precision with proven efficacy to support complex digestive needs. Used in hospitals, prescribed by specialists, and available in over 40 countries, VSL Probiotics is the brand where rigorous science meets everyday gut health.