VivoSim Labs, Inc. is a pharmaceutical and biotechnology services company that tests drugs and drug candidates using three-dimensional (3D) human tissue models of the liver and intestine. It provides partners with liver and intestinal toxicology insights through its new approach methodologies (NAM) models, and offers liver toxicology predictive screening and research services. The company also predicts and studies the intestinal side effect profiles of therapeutic candidates for pharmaceutical and biotech companies at various stages of drug development, and builds functional 3D human tissues using proprietary technologies that mimic key aspects of native human tissue composition, architecture, function, and disease. Its 3D human tissue platform develops novel human normal and disease models using high-throughput systems, bioprinted, and flow/stretch-capable 3D systems. Formerly known as Organovo Holdings, Inc., it changed its name to VivoSim Labs, Inc. in April 2025. Incorporated in 2007, it is headquartered in San Diego, California.