Which supplements are of most interest for gut health?

Probiotics are some of the most widely studied supplements for gut health. They reduce some of the digestive symptoms associated with antibiotics, food borne illness, IBS, and IBD. Peppermint oil has also been shown to reduce IBS-associated abdominal pain in a number of studies. The evidence for other supplements, including digestive enzymes, collagen, and glutamine, is less compelling.