Blue Flag
© Martin WallParts Used & Where Grown
The rhizome, or underground stem, of the blue flag (indicating its showy blue flowers) is used medicinally. Blue flag and closely related species (particularly Iris missouriensis, western blue flag) grow across North America.
Traditional Use (May Not Be Supported by Scientific Studies)
Based on Native American traditions, Eclectic physicians (19th century doctors who relied on herbs) and herbalists used blue flag for a number of conditions. Of note was its use as a nonspecific immune enhancer, as a laxative, and to detoxify the intestinal tract.1 Topical application of fresh, sliced rhizomes to the sores of impetigo (a common bacterial skin infection in children) has been recommended by herbalists.2 Traditional herbalists have used blue flag to treat poor digestion characterized by fat malabsorption.
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The information presented in Aisle7 is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. Self-treatment is not recommended for life-threatening conditions that require medical treatment under a doctor's care. For many of the conditions discussed, treatment with prescription or over the counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires June 2013.