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Botanical

Fennel (Digestive/Carminative)

Also known as: Foeniculum vulgare, Fennel seed, Sweet fennel

B
Evidence

Traditional carminative herb for gas, bloating, and colic with mild estrogenic properties.

Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.

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Primary uses

  • Gas relief
  • Bloating
  • Colic
  • Digestive support

How it works

  • Relaxes GI smooth muscle
  • Reduces gas formation
  • Traditional for infant colic
  • Mild estrogenic activity

Dosage

Typical range
1-2 tsp seeds as tea or 300-600mg extract
Timing
After meals for gas
With food
After meals
Duration
As needed
Special populations
Bloating, gas, infant colic (diluted oil massage)

Forms

  • Tea
  • Seeds (chewed)
  • Capsules
  • Essential oil

Safety

Common side effects

  • Allergic reactions (rare)
  • Photosensitivity

Contraindications

  • Hormone-sensitive cancers
  • Estrogen-dependent conditions

Evidence notes

Traditional use with supporting evidence

Grade B: Some human trials support key claims; further confirmation needed.

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.