The curious few.
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Know what you're putting in your body.
158 herbs, nutrients, and compounds. What the science says, what tradition knew, and what to watch for. Founding members keep this running.
$60 /year
Founding rate — locked for life. Regular price after launch: $96/year.
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Feverfew
Tanacetum parthenium
also known as Featherfew, Bachelor's button
Moderate (migraine prevention)
A daisy-family herb with traditional use and modest evidence for reducing migraine frequency through serotonin and prostaglandin modulation.
- May reduce migraine frequency
- Modulates serotonin and inhibits prostaglandins
- Approved in Canada for migraine prevention
- Used since the first century
- Most effective at standardized parthenolide content
Active in Parthenolide, Sesquiterpene lactones, Flavonoids.
Possible cross-reactivity with Asteraceae allergy
Mouth ulcers possible from chewing fresh leaves
Avoid in pregnancy — uterine stimulant
Use caution with blood thinners
Discontinuation may cause rebound headache
Discontinue 2 weeks before surgery
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The curious few.
50 founding spots left
Know what you're putting in your body.
158 herbs, nutrients, and compounds. What the science says, what tradition knew, and what to watch for. Founding members keep this running.
$60 /year
Founding rate — locked for life. Regular price after launch: $96/year.
- ✓ Full access to all 158+ entries
- ✓ Print-ready reference card for every herb
- ✓ Monthly curated set — 5 herbs, one body system
- ✓ The Sunday Letter — weekly research digest
- ✓ Bookmarks synced across devices
- ✓ Founding rate locked forever
Cancel any time. No questions asked.