SAFE

Fennel

fennel
Possibly Safe V1 Verified
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Upper Safe Limit
Avoid high doses in pregnancy — oestrogenic; not for infants under 4 weeks
PubMed Studies
28
PubChem CID
About

Trans-anethole stimulates GI motility; antispasmodic; mild oestrogenic activity

How it works (mechanism of action)

Used for bloating, flatulence and infant colic. Very common in French pharmacies. EMA well-established use.

📊 Effectiveness
Digestive health
Evidence Grade B · 10 studies · n=880
Possibly Effective
IBS symptoms
Evidence Grade C · 8 studies · n=580
Possibly Effective

Evidence grades: A=Strong RCT evidence · B=Good clinical trials · C=Limited trials · D=Preliminary/traditional

👥 Safety by Population
PopulationSafety RatingMax Safe Dose
GeneralPossibly safeNot established
PregnancyPossibly safeNot established
ElderlyPossibly safeNot established
🚫 Contraindications & Warnings

Consult a healthcare professional before use if pregnant, breastfeeding, taking prescription medications, or if you have a medical condition. Keep out of reach of children.

Updated: 2026-04-11
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