Devil's Claw for Digestive Health

Research suggests that Devil's Claw has a long traditional history of use for digestive complaints including dyspepsia and indigestion, and a body of preclinical evidence — including ex vivo colon models, human colorectal biopsy studies, and animal experiments — indicates that its extracts may exert anti-inflammatory and antioxidant effects relevant to conditions like inflammatory bowel disease. Studies indicate that iridoid glycosides, particularly harpagoside, are likely among the active constituents, though whole plant extracts appear to outperform isolated compounds, and research from 1999 notes these compounds undergo significant metabolism by intestinal bacteria, which may affect how they behave in the digestive tract. One study also found preliminary evidence that Devil's Claw extract may interact with ghrelin receptors involved in appetite signaling, suggesting possible effects on digestive regulation beyond inflammation. However, the supporting evidence comes largely from laboratory and animal studies rather than human clinical trials focused on digestive outcomes, reviews note that gastrointestinal adverse events occur in a small but notable percentage of users, and at least one report has associated Devil's Claw use with gastrointestinal bleeding, meaning the overall picture remains promising but incomplete and warrants caution.