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).
  • Reset with Clear to see the full index again.

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 221–240 of 321 entries.

P

Poplar buds (balm of gilead) Coming soon
Safety: Details coming soon.
Prickly ash bark Coming soon
Safety: Details coming soon.
Propolis (Apis mellifera) Coming soon
Safety: Details coming soon.
Pueraria lobata Kudzu Root Coming soon
Safety: Details coming soon.
Pulsatilla (caution) Coming soon
Safety: Details coming soon.
Punarnava Coming soon
Safety: Details coming soon.
Pygeum Coming soon
Safety: Details coming soon.

Q

Quercus alba White Oak Bark Coming soon
Safety: Details coming soon.

R

Red Root Coming soon
Safety: Details coming soon.
Red-belted Conk Coming soon
Safety: Details coming soon.
Rehmannia glutinosa Rehmannia Coming soon
Safety: Details coming soon.
Reishi Coming soon
Safety: Details coming soon.
Reynoutria multiflora He Shou Wu (Fo-Ti) Coming soon
Safety: Details coming soon.
Rhodiola rosea Rhodiola Coming soon
Safety: Details coming soon.
Rosa canina Rose Hips Coming soon
Safety: Details coming soon.
Rosmarinus officinalis Rosemary Coming soon
Safety: Details coming soon.
Royal Jelly Coming soon
Safety: Details coming soon.
Rubus idaeus Red Raspberry Leaf Coming soon
Safety: Details coming soon.
Rumex crispus L.
Common name(s): Yellow dock, Curly dock, Narrowleaf dock
AlterativeCholagogueDigestive (digestant)DiureticHepaticLaxativeLymphagogue
Preparations: Decoction, Tincture (alcohol extract), Powder, Syrup, Poultice
Safety: Short-term use only for laxative action; avoid in pregnancy, lactation, children <12, and in intestinal obstruction/ileus. Caution with diuretics/cardiac glycosides due to hypokalemia risk. Leaves are high in oxalates—cook if using as food.

S

Saffron Coming soon
Safety: Details coming soon.