True worm fern

The true worm fern, which is also known by the names common worm fern, common worm fern and man fern, as well as by its Latin name Dryopteris filix-mas, is a very poisonous plant. Oral ingestion can be fatal. Despite serious safety concerns, the leaves and other parts of the plant that grow above ground, as well as the root stem, are used by some people to make medicine. Wormwood fern is used to treat nosebleeds, severe menstrual bleeding, wounds and tumors. It is also used to treat intestinal worm infestations, especially tapeworms. Some vets use true worm fern to treat worm infestations in animals.

How does real worm fern work?

Real wormfern contains chemicals that can kill worms in the intestines such as tapeworms. Once the worms have been killed, salt water is used to flush the worms out of the body.

How effective is real worm fern?

There is not enough scientific data to make a statement about the effectiveness of true worm fern for nosebleeds, heavy menstrual bleeding, wounds, tumors and tapeworm infestations. Further scientific research is needed to evaluate the effectiveness of true wormwood in these applications.

Safety and side effects

Wormwood fern is not safe or harmless. It contains a potent toxin and should not be taken orally. In Canada, therefore, all products containing true worm fern must be labeled "for external use only". Since there are other available products that are just as effective as true worm fern but safer, there is no reason to use true worm fern. Wormwood fern can cause serious side effects including breathing problems, nausea, diarrhea, dizziness, headaches, tremors, convulsions, heart and lung failure, eye disorders, muscle weakness, coma, temporary or permanent blindness and death when taken orally.

Treatment of an overdose consists of administering salt water followed by other special fluids. It is important to avoid fats and oils as these increase the amount of true wormwood absorbed by the body. If seizures occur, benzodiazepines may be used and artificial respiration may be necessary.

Precautions and warnings

Wormwood fern should not be used by anyone. However, some people are at an even higher risk of side effects.

Pregnancy and breastfeeding: Taking true wormwood during pregnancy or breastfeeding puts both mother and baby at risk.

Gastrointestinal conditions: Gastrointestinal conditions that increase digestion time may increase the amount of true wormwood absorbed through the intestines. This higher dose of true wormwood could lead to even more serious side effects.

Interactions

At this time, there is no information on interactions of true wormwood with medications or supplements.

Dosage

An appropriate dosage of true wormwood fern depends on various factors such as age, health status and others. At this time, there is insufficient scientific data to determine appropriate dosage ranges for true wormwood fern. For this reason, you should follow the dosage instructions on the label and/or consult a doctor or pharmacist before use.