Comfrey Root Ointment

German and European folk medicine — known as "knitbone" (Beinwell)

Evidence: Moderate–strong — placebo-controlled RCT and a head-to-head trial against diclofenac gel

Illustration: Comfrey (Symphytum officinale) in flower

Illustration: Dried comfrey root, cut

What it is and what it is used for

A salve made from comfrey root (Symphytum officinale), applied to the skin over sprains, bruises, and strains. Traditionally the fresh or dried root was mashed into a poultice; modern trials used a standardized comfrey root extract ointment. It is used to reduce pain and swelling after soft-tissue injuries such as twisted ankles.

Safety and disclaimers

Foraging and preparing your ingredients

Warning: illustrations and photographs alone are never enough for safe wild identification. Confirm every plant in person with a knowledgeable local expert and at least two reliable field guides before harvesting or eating anything from the wild.

Where and when to find it: Damp meadows, ditches, riverbanks, and garden edges across Europe and temperate North America. Flowers late spring to early autumn; roots are dug in autumn (most potent) or early spring.

Identification: Large, rough, hairy, lance-shaped leaves on winged stems; drooping clusters of bell-shaped blue, purple, pink, or cream flowers hanging in curled sprays. Compare with the captioned photos of the flowering plant and the root.

What to harvest: Roots for the ointment (the medicinal part used in trials); young leaves were the traditional poultice material.

Dangerous look-alikes: CRITICAL: before flowering, comfrey leaves closely resemble foxglove (Digitalis purpurea), which is deadly poisonous. Foxglove leaves are softer and wrinkled, and the plant sends up a tall spike of thimble-shaped flowers; comfrey flowers hang in curled clusters. Green alkanet is also similar but has bright blue open flowers. Never harvest unless you are certain — when in doubt, buy dried root from a reputable supplier.

Harvest sustainably: Take only part of the roots from large, established clumps and replant the crown so the plant regrows. Never strip a small patch. Avoid plants growing near roads, sprayed fields, or polluted water.

Preparing and storing:

Recipe

Ingredients:

Preparation:

  1. Gently warm the oil with the dried comfrey root in a double boiler on the lowest heat for 2–3 hours; do not let it boil.
  2. Strain out the root through cheesecloth, pressing to extract the oil.
  3. Return the infused oil to the double boiler, add the grated beeswax, and stir until melted.
  4. Pour into a clean jar and let cool until set. Store in a cool, dark place.

Dosage / directions: Apply a thin layer to intact skin over the sprain or bruise 2–3 times daily for up to 2 weeks. Stop if irritation develops.

Folk history

Comfrey's folk name, 'knitbone,' records exactly what country people believed it did: knit broken bones and mend torn tissue. It has been applied to sprains, bruises, and fractures in European folk medicine since antiquity, and the German name Beinwell ('leg-well') tells the same story. Comfrey was once also eaten as a vegetable and drunk as tea — a practice abandoned after its liver-toxic alkaloids were identified.

Scientific references