Fennel: what it does, by goal, and the dose that worked

What the 32 human studies of fennel we graded show for each goal, the dose that worked, and the products that hold it. This page is educational, not medical advice.

Human studies graded
32
Goals with an improvement
2
Products
1
Ranked
1
Biohacker opinions
5/10
What it does, by goalMembersThe top 2 of 2 goals

1 of these 32 human studies gave fennel by drip, not by mouth.

GoalWhat the studies showStudiesDose that worked
Improved in studies 23 studies, 11 showed an improvement, 4 found none, 8 pooled analyses2330 mg
Improved in studies 9 studies, 4 showed an improvement, 2 found none, 2 pooled analyses, 1 by drip, injection or inhaler9–

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Products – highest ranked firstMembersThe top 1 of 1
Dose and safetyThe dose that worked and the upper limit

The studies taken by mouth that showed an improvement gave 30 mg to 2 g a day.

Biohacker panelMembersWhat our 10 biohackers say about fennel
Questions people askMembersAnswered from the figures on this page

What is fennel good for?

Answer for members.

How much fennel a day?

Answer for members.

Can I take fennel with my meds?

Answer for members.

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Educational, not medical advice. Figures come from the human studies on PubMed we have graded; a study counts for a form when it names the form it used. Updated as new studies arrive. How we grade →