Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Labrador Tea (Rhododendron groenlandicum, formerly Ledum groenlandicum) has a long history of use among Indigenous peoples of North America, particularly in Canada and Alaska, as a traditional remedy for colds and respiratory ailments. The leaves were brewed into teas or infusions believed to help alleviate symptoms such as cough, sore throat, and congestion. This traditional application is documented in ethnobotanical literature and oral histories. However, while these practices are well attested, rigorous scientific studies specifically validating Labrador Tea’s antiviral effects or its efficacy against the common cold are lacking. A handful of laboratory investigations have reported that some constituents of Labrador Tea, such as essential oils and flavonoids, possess mild antimicrobial or anti-inflammatory properties, but these studies typically do not extend to human trials or direct antiviral activity against cold viruses. Thus, while traditional use is robust and the plant continues to be used in herbal medicine, scientific validation remains limited. Safety concerns also exist, as Labrador Tea contains ledol, a compound that can be toxic in large quantities. Therefore, while its use for colds is primarily justified by tradition and anecdote, not by strong scientific evidence, it remains a culturally significant remedy in certain communities.

More about Labrador Tea
More about Colds (antiviral)

Other ingredients used for Colds (antiviral)

Other health conditions supported by Labrador Tea

Products containing Labrador Tea