Last Editorial Review: 6/11/2021
Other Name(s):

August Flower, Grindelia, Grindelia camporum, Grindelia Herb, Grindelia robusta, Grindelia squarrosa, Grindeliae Herba, Grindélie, Grindélie Robuste, Grindélie Squarreuse, Gum Weed, Gumweed Herb, Herbe à Gomme, Rosin Weed, Tar Weed.


Gumweed is an herb. People dry the leaves and top of the plant to make medicine.

Gumweed is used for cough, bronchitis, and swelling (inflammation) of the nose, sinuses, and throat.

How does it work?

Gumweed might help prevent bacterial growth.


Next to red peppers, you can get the most vitamin C from ________________. See Answer

Uses & Effectiveness

Insufficient Evidence to Rate Effectiveness for...

  • Cough.
  • Bronchitis.
  • Swelling (inflammation) of the nose, sinuses, and throat.
  • Other conditions.
More evidence is needed to rate the effectiveness of gumweed for these uses.

Natural Medicines Comprehensive Database rates effectiveness based on scientific evidence according to the following scale: Effective, Likely Effective, Possibly Effective, Possibly Ineffective, Likely Ineffective, and Insufficient Evidence to Rate (detailed description of each of the ratings).

Side Effects

Gumweed is POSSIBLY SAFE for most people when taken by mouth. But it can cause some side effects such as stomach upset and diarrhea.


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Special Precautions & Warnings

Pregnancy and breast-feeding: There is not enough reliable information about the safety of taking gumweed if you are pregnant or breast-feeding. Stay on the safe side and avoid use.

Allergy to ragweed, daisies, and related plants: Gumweed 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 gumweed.


The appropriate dose of gumweed 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 gumweed. 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.

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