Is Fennel safe to take daily?

Fennel is rated "Generally Safe" based on clinical evidence. Always consult your healthcare provider before starting any supplement.

Ingredient Research

Graded against 173,636 supplements + 177 published clinical interactions, sourced from PubMed, FDA CAERS, openFDA, NIH DSLD

Fennel

MODERATE EVIDENCESupplementLast updated

AVELOR SUMMARY

Fennel seed has evidence for menstrual cramp pain (dysmenorrhea) — a 2012 meta-analysis of 4 RCTs found fennel extract reduced menstrual pain by 40-50%, comparable to mefenamic acid (NSAID). Active compound trans-anethole has estrogenic and antispasmodic properties. Also traditional galactagogue (breast milk) and carminative (gas relief). Dose: 30mg fennel extract 4x/day for dysmenorrhea. Safe with long culinary history. --- *Reviewed by the Dose AI Research Team and Clinical Advisory Board* *Last updated: 2026-04-06*

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Independently graded against 173,636 indexed supplements with 177 published clinical interactions, sourced from PubMed, FDA CAERS, openFDA, and NIH DSLD | Last updated:

Not medical advice. Based on published clinical research and systematic reviews.

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