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Sweet Flag, Premium Whole (acorus americanus)


This comes as a whole root. If you would like your Sweetflag sliced, please let us know

All our herbs come from certified organic sources or trusted wildcrafters. 

ALSO KNOWN AS: Rat root, WiikkaiiWeegasAcore, Bitterroot    

PLANT FAMILY: Acoraceae  

PART(S) USED: Dried root  

OVERVIEW: Sweet flag is found across southern Canada, in the Northeast and upper Midwest. Taxonomically speaking, this plant has caused much confusion in North America. Two separate species now grow here: Acorus calamus, an introduced sterile triploid, and Acorus americanus, a native fertile diploid. The species can be easily identified by the distinct ribs on the leaves. Acorus calamus has one midrib and Acorus americanus have several. 

WARNING: Health Canada warns that any kind of use of Acorus without the supervision of an informed physician may be hazardous. Some strains of Acorus calamus are thought to contain the carcinogenic chemical β-asarone. Recent work indicates the diploid strain Acorus americanus does not contain this chemical. (We carry Acorus americanus)

Sweetflag has a long history of use in all parts of the world where it can be found. The richly fragrant leaves were woven into baskets or strewn across the floors of common areas inside dwellings.  

TRADITIONAL USES: The scent of Sweetflag is very uplifting and has been used in aromatherapy to help combat depression and anxiety. 

Sweetflag is said to be an antimicrobial. Traditionally, it is taken at the onset of a cold or flu, to either arrest the sickness or shorten the duration and reduce the severity of symptoms. It has a long tradition of use in the treatment of colds, sore throats, coughs, sinusitis, as an antihistamine, in small doses to treat nausea, motion sickness, gastrointestinal problems including ulcers, gastritis, flatulence, diarrhea, upset stomach, loss of appetite, headache, toothache, hangover, and diabetes.  

It has also been used to promote focus and clarity, treat exhaustion, induce sweating, to treat rheumatoid arthritis and stroke, pain from endometriosis, enhance libido in both sexes, treat laryngitis and to strengthen the vocal chords for singers and speakers. Some herbalists suggest chewing Sweetflag as a preventative when around others who are sick. 


  • Use at your own risk.  
  • Improper use of this herb can cause kidney damage, shaking, and seizures. 
  • Always consult with a qualified healthcare practitioner before using any herbal products, especially if you are pregnant, nursing, have an existing medical condition, have allergies, or are on any medications.  

WARNING: This information is for educational purposes only, has not been evaluated by Health Canada, and is not intended to diagnose, treat, cure, or prevent any disease. 


No information regarding Calamus Americanus is currently available on the Health Canada website.