Oregano (Herb) for Digestive Health

Research suggests that oregano and its various species, including Origanum onites and Origanum majorana, have a long history of traditional use for gastrointestinal complaints, and a growing body of pharmacological evidence appears to support several of these uses. Studies indicate that oregano demonstrates antimicrobial, anti-inflammatory, antioxidant, antispasmodic, and gastroprotective activities in laboratory and preclinical settings, with findings pointing to potential benefits for conditions ranging from intestinal inflammation and gut microbiota imbalance to bacterial overgrowth and H. pylori infection. The available evidence comes primarily from reviews, preclinical studies, and non-randomized research rather than large-scale human clinical trials, which is an important limitation when interpreting the overall strength of the evidence. One older review also notes that while oregano is generally considered well tolerated, gastrointestinal upset has been reported as a potential side effect, suggesting that individual responses may vary.