Botanical Name: Dryopteris filix-mas
A perennial herbaceous plant, 1.20-1.40 m high, long, horizontal rhizome with a diameter of 4-5 cm.
The young leaves are twisted in the form of carriages, then at maturity, they reach up to 1.40 m, have a short petiole.
Leaves are penetrated. The species grows from the lower mountain range, in forests and bushes, up to the subalpine floor.
- New Zealand
In the past, the excercises of the fern rhizomes were used in many pharmacopoeias and were used to combat intestinal parasites and especially against tapeworms. Nowadays, this recommendation has been dropped.
Preparations from the fern root have vermifuge action.
The active principles of fern rhizomes have the property of paralyzing the muscles of the skin, as well as other intestinal parasites (botrycephalus, ascaris, anchilostoma).
Fern preparations have been used to treat intestinal parasites. At present, their place is taken up by pharmaceutical synthesis products.
Because of the potential for toxicity seen in case of overdose, fern root extracts are administered only at the indication and under the supervision of the physician.
Precautions and contraindications
Overdosage is manifested by toxic phenomena, with nausea, vomiting, diarrhea, nerve disorders, fatigue, somnolence, hearing and hearing disorders, heartburn, etc.