CategoryHerbs & Supplements
Asteraceae (family), August flower, California gumplant, grindelia, Grindelia camporum, Grindelia robusta, Grindeliae herba, Grindelie, gum plant, gumplant, gum weed, hardy grindelia, rosin weed, scaly grindelia, tar weed, tarweed.
Gumweed is a traditional medicine of California Native Americans, such as the Chumash people. Gumweed was used clinically from the 1880s until 1960 in the United States and the United Kingdom for the treatment of asthma, bronchitis, and poison ivy rash. Gumweed use in clinics was discontinued in 1960 when a new law required medicines to have proven efficacy in clinical trials. The plant contains grindelane diterpenoids of unknown pharmacological activity.
There are no high quality trials supporting the use of gumweed for asthma, bronchitis, dermatitis, or any other condition. High quality clinical trials of gumweed are needed in these areas.
EvidenceDISCLAIMER: These uses have been tested in humans or animals. Safety and effectiveness have not always been proven. Some of these conditions are potentially serious, and should be evaluated by a qualified healthcare provider.
TraditionWARNING: DISCLAIMER: The below uses are based on tradition, scientific theories, or limited research. They often have not been thoroughly tested in humans, and safety and effectiveness have not always been proven. Some of these conditions are potentially serious, and should be evaluated by a qualified healthcare provider. There may be other proposed uses that are not listed below.
Asthma, blood purification, bronchial irritation, bronchitis, burns, colds, coughs, diuretic, laxative, lice, mouth and throat inflammation, pain, rash, skin diseases, sores, tonic, wounds.
Adults (18 years and older):
There is no proven safe or effective dose for gumweed. Traditionally, 2 grams of chopped or powdered gumweed, or 2 milliliters of the fluid extract has been used.
Children (younger than 18 years):
There is no proven safe or effective dose for gumweed in children, and use is not recommended.