How to use this page
  • Search by Latin or common name (e.g., Achillea, yarrow).
  • Jump A–Z to scan alphabetically (use “0–9” for numerals).
  • Filter by Action (e.g., astringent), Preparation (tincture, infusion), or System (digestive, immune).
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What an entry includes

  • Scientific + common names, parts used, primary actions, systems, preparations.
  • Safety snapshot and links to related Studies when available.
  • Consistent black-and-white, field-guide style illustrations for quick recognition.

Editorial standards: Educational, research-aware, and non-diagnostic. See our Editorial Policy and Sourcing & Citations.

Medical disclaimer: For general education only. Consult a qualified practitioner about individual use, especially with medications, pregnancy, or medical conditions.

Materia Medica A – Z

Our herbal encyclopedia with preparations, uses, safety notes, and research references.

Showing 1–20 of 35 entries (filtered).

C

Calendula officinalis Calendula Coming soon
Safety: Details coming soon.
California poppy Coming soon
Safety: Details coming soon.
Camellia sinensis Green Tea Coming soon
Safety: Details coming soon.
Carbo activatus
Common name(s): Activated carbon, Medicinal charcoal
AntidoteDeodorant
Preparations: Powder, Capsules, Compress / fomentation, Poultice, Slurry drink (powder-in-water)
Safety: Use only under professional guidance for emergencies; not a daily supplement. Contraindicated with caustic ingestions and in patients with compromised airway or intestinal obstruction. Do not combine with ipecac. May reduce absorption of oral medications/supplements; separate by several hours. Adverse effects include constipation and black stools; rare aspiration risk.
Cardamom Coming soon
Safety: Details coming soon.
Carum carvi Caraway Coming soon
Safety: Details coming soon.
Castor Oil Coming soon
Safety: Details coming soon.
Catnip Coming soon
Safety: Details coming soon.
Caulophyllum thalictroides Blue Cohosh Coming soon
Safety: Details coming soon.
Cayenne Coming soon
Safety: Details coming soon.
Celandine (greater) Coming soon
Safety: Details coming soon.
Celery seed Coming soon
Safety: Details coming soon.
Cera alba Beeswax Coming soon
Safety: Details coming soon.
Chaga Coming soon
Safety: Details coming soon.
Chamomile (Roman) Coming soon
Safety: Details coming soon.
Chamomile (wild) Coming soon
Safety: Details coming soon.
Chanca piedra Coming soon
Safety: Details coming soon.
Chickweed Coming soon
Safety: Details coming soon.
Chrysanthemum flower Coming soon
Safety: Details coming soon.
Cichory Root Coming soon
Safety: Details coming soon.