The Wolfsbane Plant: Myths, Mysteries, and Toxicity

The wolfsbane plant has the highest concentration of poison of all plants growing in Europe. This concentration is only exceeded by another species of the same genus, the Aconitum Ferox wall of Nepal, which contains what is considered the most active vegetal poison in the world. Only four grams of the latter’s roots are enough to kill an adult individual.

Since ancient times, the wolfsbane plant has been used to poison arrows and kill criminals. In the 18th century, the Austrian physician Stoerk began to use this plant to treat neuralgic aches.

Wolfsbane Plant Scientific Facts

1. Other names: Aconite, friar’s cap, mousebane, monkshood.
2. French: Aconit, napel.
3. Spanish: Aconito, matalobos.
4. Environment: Mountainous and humid lands throughout Europe and America, especially in the North. Despite its high toxicity, it is grown worldwide as an ornamental plant.
5. Description: This herbaceous plant of the Ranunculaceae family grows from 50 to 150 cm high. Its flowers are beautiful and helmet-shaped, and they may be dark blue, yellow, or white. The root is a turnip-shaped tuber.
6. Parts of the plant used medicinally: Root.

Healing Properties Uses and Warning

The entire plant, especially its roots, contains potent alkaloids (aconitine and napelline) and flavonoid glycosides, resins, starch, and mannitol. This plant’s most important active ingredient is aconitine, a powerful anesthetic for sensitive nerve endings and a febrifuge and antitussive.

The wolfsbane plant is used internally and externally to ease chronic neuralgic pains, especially those of the trigeminal nerve, which affects the face and the sciatic nerve. It has also been used as a substitute for morphine to cure drug addiction. The active elements of wolfsbane are potent substances that, when correctly used, produce beneficial medicinal effects. Wolfsbane is one of those plants that heal but also kill.

WARNING! Young wolfsbane (when it is starting to grow) contains lower amounts of toxic substances. However, when the plant reaches maturity, it becomes highly poisonous. In some gardens, the wolfsbane plant is grown as an ornament. Prolonged contact with the plant may be dangerous. There have been cases of intoxication with children who held wolfsbane bouquets in their hands for some time. When applied externally, it should not be forgotten that aconitine is also absorbed through the skin, so there may be a risk of poisoning even with external use. No more than three daily applications may be given.

Wolfsbane Poisoning

Symptoms. Ten to twenty minutes after its intake, there is a sensation of irritation or tingling in the mouth, hands, and feet that soon spread to the whole body, along with abundant sweating and shivering. Then vomiting, diarrhea, and nausea appear. If the toxicity is severe, there are alterations in respiration and heartbeat, which give way to heart and breathing failure, followed by death.

First aid. Immediately induce vomiting. Gastric lavage is recommended, then give the patient charcoal and quick-acting laxatives. The victim must directly be taken to the hospital for admission into an intensive care unit.

How to use Wolfsbane

The wolfsbane plant must always be used under a physician’s supervision, using laboratory products that can be carefully measured to determine its exact aconitine content. The following pharmaceutical preparations can be used.

1. Root powder. A maximum dose of 0.4 g daily is distributed over several intakes.
2. Alcoholic extract at a 1/10 ratio—maximum of six drops per day.
3. Hydroalcoholic extract, which is presented in the form of pills and whose maximum dose cannot exceed 0.10 g daily.
4. Lotions with the alcoholic tincture.
5. Creams and ointments made from the hydroalcoholic extract. These are applied by massaging over the painful area.

DISCLAIMER: All content on this website is presented solely for educational and informational objectives. Do not rely on the information provided as a replacement for advice, diagnosis, or treatment from a qualified medical expert. If you are pregnant, nursing, or have any preexisting medical concerns, talk to your doctor before using any herbal or natural medicines.

REFERENCES

1. George D. Pamplona-Roger, M.D. “Encyclopedia of Medicinal Plants.” George D. Pamplona-Roger, M.D. Encyclopedia of Medicinal Plants. Ed. Francesc X. Gelabert. Vols. 1 San Fernando de Henares: Editorial Safeliz, 2000. 148, 149. Print.
2. National Institutes of Health (Medline Plus): https://medlineplus.gov/ency/article/002878.htm
3. North Carolina State University Extension: https://plants.ces.ncsu.edu/plants/aconitum/

Last update on 2025-12-22 / Affiliate links / Images from Amazon Product Advertising API