Digestive Enzymes for Lactose Intolerance

Research suggests that digestive enzyme supplementation, particularly lactase, is a recognized and broadly supported approach for managing lactose intolerance, with the available literature indicating it can meaningfully reduce symptoms like bloating, abdominal pain, and diarrhea. The evidence base consists of two reviews and two smaller pilot or experimental studies rather than large randomized controlled trials, which limits the strength of conclusions that can be drawn. Studies indicate that while animal-derived lactase remains the current clinical standard, plant- and microbial-derived alternatives show promise, and emerging delivery technologies such as lipid microparticles may improve how effectively the enzyme reaches the small intestine where it is needed. One mixed finding worth noting is that in some cases, symptoms attributed to lactose intolerance may partly reflect underlying conditions like bacterial overgrowth, suggesting that enzyme supplementation alone may not address all contributing factors for every individual.