Wild indigo
Wild indigo

Background

Wild indigo is an herb. The root is used to make medicine. Sometimes the sap of wild indigo is used as a dye.

Wild indigo is used for infections such as diphtheria, influenza (flu), the common cold, other upper respiratory tract infections, malaria, typhoid, and many other conditions, but there is no good scientific evidence to support these uses.

Do not confuse wild indigo with other plants that are often referred to as indigo. Also, don't confuse wild indigo with indigo carmine. Indigo carmine is a dye that is created in a lab and is used for many industrial purposes.
When taken by mouth: Wild indigo is LIKELY UNSAFE when taken by mouth long-term or in large doses such as 30 grams or more. Large doses can cause vomiting, diarrhea, other intestinal problems, and spasms. There isn't enough reliable information to know if wild indigo is safe when used in lower doses.

When applied to the skin: There isn't enough reliable information to know if wild indigo is safe or what the side effects might be.

Special Precautions & Warnings:

Pregnancy and breast-feeding: Wild indigo is LIKELY UNSAFE when taken by mouth or applied to the skin. Avoid use.

Stomach or intestinal problems: Wild indigo can be especially harmful to people with stomach or intestinal problems. Avoid use.

Effectiveness

NatMed Pro rates effectiveness based on scientific evidence according to the following scale: Effective, Likely Effective, Possibly Effective, Possibly Ineffective, Likely Ineffective, Ineffective, and Insufficient Evidence to Rate.
Likely effective Effectiveness definitions
Possibly effective Effectiveness definitions
Likely ineffective Effectiveness definitions
Possibly ineffective Effectiveness definitions
Insufficient evidence Effectiveness definitions
  • Common cold.
  • Cold sores.
  • Low white blood cell count (leukopenia).
  • Swelling (inflammation) of the nasal cavity and sinuses (rhinosinusitis).
  • Swelling (inflammation) of the tonsils (tonsillitis).
  • Diphtheria.
  • Influenza (flu).
  • Malaria.
  • Typhoid fever.
  • Scarlet fever.
  • Sore throat.
  • Swelling of the mouth and throat.
  • Fever.
  • Crohn disease.
  • Ulcers.
  • Wounds.
  • Sore and painful nipples.
  • Other conditions.
More evidence is needed to rate the effectiveness of wild indigo for these uses.

Dosing & administration

The appropriate dose of wild indigo 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 wild indigo. 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.

Interactions with pharmaceuticals

It is not known if Wild Indigo interacts with any medicines. Before taking Wild Indigo, talk with your healthcare professional if you take any medications.

Interactions with herbs & supplements

There are no known interactions with herbs and supplements.

Interactions with foods

There are no known interactions with foods.

Action

There isn't enough information to know how wild indigo works.
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This monograph was last reviewed on 30/03/2023 11:00:00 and last updated on 08/08/2020 03:33:09. Monographs are reviewed and/or updated multiple times per month and at least once per year.
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