Canadian fleabane
Scientific names: Conyza canadensis, Erigeron canadensis
Family: Asteraceae/Compositae
Alternate names: Butterweed, Canada Fleabane, Canadian Horseweed, Canadian-Fleabane, Canadian Trailing Arbutus, Coltstail, Conyza du Canada, Erígero de Canadá, Érigéron du Canada, Fausse Camomille, Flea Wort, Hierba Carnicera, Hogweed, Horsewood, Oleum Erigerontis, Prideweed, Vergerette du Canada, Vergerolle du Canada
Background
Canadian fleabane is a plant. The parts that grow above the ground are used for medicine.
People use Canadian fleabane for swelling (inflammation) of the main airways in the lung (bronchitis), sore throat, diarrhea, abnormally heavy bleeding during menstrual periods (menorrhagia), to stop bleeding, and other conditions, but there is no good scientific evidence to support these uses.
People use Canadian fleabane for swelling (inflammation) of the main airways in the lung (bronchitis), sore throat, diarrhea, abnormally heavy bleeding during menstrual periods (menorrhagia), to stop bleeding, and other conditions, but there is no good scientific evidence to support these uses.
Safety Safety definitions
When taken by mouth: Canadian fleabane is POSSIBLY SAFE when used appropriately.
When applied to the skin: There isn't enough reliable information available to know if Canadian fleabane is safe when applied to the skin.
Allergy to ragweed, daisies, and related plants: Canadian fleabane may cause an allergic reaction in people who are sensitive to the Asteraceae/Compositae plant family. Members of this family include ragweed, chrysanthemums, marigolds, daisies, and many others. If you have allergies, be sure to check with your healthcare provider before taking Canadian fleabane.
Surgery: Canadian fleabane can slow blood clotting. There is concern that it might cause extra bleeding during and after surgery. Stop using Canadian fleabane at least 2 weeks before a scheduled surgery.
When applied to the skin: There isn't enough reliable information available to know if Canadian fleabane is safe when applied to the skin.
Special Precautions & Warnings:
Pregnancy and breast-feeding: There isn't enough reliable information to know if Canadian fleabane is safe to use when pregnant or breast-feeding. Stay on the safe side and avoid use.Allergy to ragweed, daisies, and related plants: Canadian fleabane may cause an allergic reaction in people who are sensitive to the Asteraceae/Compositae plant family. Members of this family include ragweed, chrysanthemums, marigolds, daisies, and many others. If you have allergies, be sure to check with your healthcare provider before taking Canadian fleabane.
Surgery: Canadian fleabane can slow blood clotting. There is concern that it might cause extra bleeding during and after surgery. Stop using Canadian fleabane at least 2 weeks before a scheduled surgery.
Effectiveness
NatMed Pro rates effectiveness based on scientific evidence according to the following scale: Effective, Likely Effective, Possibly Effective, Possibly Ineffective, Likely Ineffective, Ineffective, and Insufficient Evidence to Rate.
Insufficient evidence Effectiveness definitions
- A type of non-cancerous skin sore (granuloma annulare).
- Abnormally heavy bleeding during menstrual periods (menorrhagia).
- Cancer.
- Diarrhea.
- Fever.
- Gout.
- Rheumatoid arthritis (RA).
- Sore throat.
- Stopping bleeding when applied to the skin.
- Swelling (inflammation) of the main airways in the lung (bronchitis).
- Urinary tract infections (UTIs).
- Other conditions.
Dosing & administration
The appropriate dose of Canadian fleabane depends on several factors such as the user's age, health, and several other conditions. At this time there is not enough scientific information to determine an appropriate range of doses for Canadian fleabane. Keep in mind that natural products are not always necessarily safe and dosages can be important. Be sure to follow relevant directions on product labels and consult your pharmacist or physician or other healthcare professional before using.
Interactions with pharmaceuticals
Medications that slow blood clotting (Anticoagulant / Antiplatelet drugs)
Interaction Rating=Moderate Be cautious with this combination.
Canadian fleabane may slow blood clotting. Taking Canadian fleabane along with medications that also slow clotting might increase the chances of bruising and bleeding.
Some medications that slow blood clotting include aspirin, clopidogrel (Plavix), dalteparin (Fragmin), enoxaparin (Lovenox), heparin, ticlopidine (Ticlid), warfarin (Coumadin), and others.
Interactions with herbs & supplements
Herbs and supplements that might slow blood clotting: Canadian fleabane may slow blood clotting. Taking it along with other herbs that also slow clotting might increase the chances of bruising and bleeding. Some herbs that can slow blood clotting include angelica, clove, danshen, garlic, ginger, ginkgo, Panax ginseng, horse chestnut, red clover, turmeric, and others. Don't take Canadian fleabane with any of these.
Interactions with foods
There are no known interactions with foods.
Action
There isn't enough information about Canadian fleabane to know how it might work.
Products
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Per serve:
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Practitioner product
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This monograph was last reviewed on 26/08/2023 10:00:00 and last updated on 20/12/2021 00:45:20. Monographs are reviewed and/or updated multiple times per month and at least once per year.
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Natural Medicines rates safety based on scientific evidence according to the following scale: Likely Safe, Possibly Safe, Possibly Unsafe, Likely Unsafe, Unsafe, and Insufficient Evidence to Rate. For more information about Natural Medicines’ Safety Rating System, click here.
The Natural Medicines Effectiveness Ratings are assigned for specific indications. A product might be rated "Possibly Effective" for one condition, but be rated "Likely Ineffective" for another condition, depending on the evidence. For more info click here.
