Canadian Fleabane
OTHER NAME(S): Butterweed, Canada Fleabane, Canadian Horseweed, Canadian-Fleabane, Canadian Trailing Arbutus, Coltstail, Conyza du Canada, Érigéron du Canada, Fausse Camomille, Flea Wort, Hierba Carnicera, Hogweed, Horsewood, Oleum Erigerontis, Prideweed, Vergerolle du Canada, Conyza canadensis, Erigeron canadensis, Erígero de Canadá, Vergerette du Canada
Overview
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.
There isn't enough information about Canadian fleabane to know how it might work.
There isn't enough information about Canadian fleabane to know how it might work.
Uses
Insufficient Evidence for
- 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.
More evidence is needed to rate the effectiveness of Canadian fleabane for these uses.
Side Effects
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.
Precautions
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.
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.
Interactions
Moderate Interaction
Be cautious with this combination
- Medications that slow blood clotting (Anticoagulant / Antiplatelet drugs) interacts with Canadian FleabaneCanadian 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.
Dosing
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.
References
- McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
- Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
- Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
- Saluk-Juszczak J, Olas B, Pawlaczyk I, Gancarz R, Wachowicz B. Effects of the extract from Conyza canadensis on human blood platelet aggregation. Gen Physiol Biophys 2007;26(2):150-2.
- Olas B, Saluk-Juszczak J, Pawlaczyk I, et al. Antioxidant and antiaggregatory effects of an extract from Conyza canadensis on blood platelets in vitro. Platelets 2006;17(6):354-60.
- El-Akhal J, Humulescu I, Ionita R, et al. Anxiolytic and Antidepressant-Like Effects of Conyza canadensis Aqueous Extract in the Scopolamine Rat Model. Plants (Basel) 2021;10(4):645.