Fennel for Digestive Health

Research suggests that fennel is among the most commonly included medicinal plants in digestive health supplements, particularly those marketed for complaints such as bloating, dyspepsia, and reflux, indicating a broad traditional basis for its use in this context. The available evidence, however, comes from a single 2025 systematic review of supplement market data rather than from controlled clinical trials or meta-analyses directly testing fennel's efficacy, which represents a significant limitation in drawing firm conclusions. Studies indicate that while product labels frequently claim digestive benefits, reviewers found that the majority of these claims rest on traditional use rather than rigorous scientific evidence. Overall, the research in this area points to a meaningful gap between how widely fennel is used in commercial digestive supplements and how thoroughly its effects have been validated through well-designed clinical studies.