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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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RESPIRATORY

Slippery elm

Ulmus rubra

also known as Red elm, Indian elm

Moderate (traditional + soothing)

A North American native tree whose inner bark forms a soothing mucilage used for sore throat and digestive irritation.

  • mucilage content.">Demulcent for sore throat
  • Eases acid reflux discomfort
  • Soothes irritated digestive lining
  • Supports inflammatory bowel discomfort
  • Used by Indigenous tribes of eastern North America
  • Inner bark forms a soothing gel with water

Active in Mucilage, Tannins, Phytosterols.

May slow absorption of medications — separate by 2 hours
Use sustainably-sourced bark only — wild trees are threatened
Insufficient data in pregnancy — generally cautious avoidance

Memorial Sloan Kettering About Herbs · EMA Herbal Medicinal Product Monographs · American Botanical Council HerbMedPro

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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
Become a founding member

Cancel any time. No questions asked.