Wild indigo is a shrub with yellow flowers. The root has been used to help the body fight off the cold and flu. Wild indigo can be taken as a pill, powder, or extract. It can also be applied as an oil or cream and has been used to calm sores in the mouth. Wild indigo can also be made into a tea.
There are no advised doses for wild indigo.
There is not enough data to support that wild indigo is helpful in treating health problems. We will review future studies as they are published.
Editorial process and description of evidence categories can be found at EBSCO NAT Editorial Process.
It is likely safe for most adults to use wild indigo on the skin and to take it orally in small doses for a short time. Large doses and long term use should be avoided. Women who are pregnant or breastfeeding should not use wild indigo.
Talk to your doctor about any supplements or therapy you would like to use. Some can interfere with treatment or make conditions worse.
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Last reviewed July 2019 by EBSCO NAT Review Board Eric Hurwitz, DC Last Updated: 3/26/2020