SO DYK
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.

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  • 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
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Evening primrose

Oenothera biennis

also known as EPO, Evening primrose oil

Moderate (eczema, premenstrual)

A North American wildflower whose seed oil is rich in gamma-linolenic acid, used for atopic dermatitis and women's hormonal complaints.

  • Source of gamma-linolenic acid (GLA)
  • May ease atopic dermatitis
  • Mixed evidence for premenstrual symptoms
  • May ease breast tenderness (mastalgia)
  • May ease diabetic neuropathy in some studies
  • Used by Indigenous tribes of North America

Active in Gamma-linolenic acid (GLA), Linoleic acid.

Use caution with blood thinners
May lower seizure threshold — avoid with seizure disorders
Discontinue 2 weeks before surgery
Avoid with phenothiazines (antipsychotics) — seizure risk
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
Become a founding member

Cancel any time. No questions asked.