Wild Indigo
(Baptisia tinctoria)
Also know as False Indigo
Botanical Information
A perennial herb native to the eastern U.S. with bright yellow flowers in the pea family.
Working with Wild Indigo
Part(s) Used
Root
Herb Forms
Tincture, bulk herb
Christopher Hobbs:
“Wild indigo is a heat-clearing, anti-viral herb that is used to remove heat and toxins in such conditions as boils, abscesses, and septicemia. Wild indigo is also indicated for laryngitis and tonsillitis. Externally, it is applied as a poultice to sore or cracked nipples. It is widely used in Europe and the U.S. in combination with echinacea and thuja in immune stimulant preparations to treat colds and flu, especially when accompanied by a fever.
Caution: This herb is slightly toxic in large doses and can cause nausea and vomiting; not for use during pregnancy.
Wild Indigo has a taste of BITTER and a temperature of COLD.”
Historical Uses
Wild indigo has been historically used by Native Americans and early settlers for medicinal purposes. It was applied as a poultice for wounds, ulcers, and skin infections, and internally for treating fevers, respiratory issues, and gastrointestinal problems. Its use was particularly valued for infections and as a stimulant for the immune system.
Modern Clinical Uses
Herbalists and naturopaths use wild indigo primarily to support the immune system in cases of upper respiratory infections, tonsillitis, pharyngitis, and sinusitis. It is often included in herbal formulations for its antibacterial, antiviral, and anti-inflammatory properties. It’s sometimes combined with other herbs like echinacea and myrrh to enhance immune-boosting effects.
Chemistry
Wild indigo contains several active compounds, including:
- Alkaloids: Cytisine, a toxic quinolizidine alkaloid that resembles nicotine.
- Flavonoids: Known for antioxidant and anti-inflammatory effects.
- Polysaccharides: Thought to stimulate the immune system.
- Saponins: Associated with antimicrobial and expectorant properties.
Pharmacology
- Immune Modulation: Compounds in wild indigo have been found to enhance the activity of macrophages, aiding the immune response.
- Antimicrobial Effects: It shows activity against certain bacteria and fungi, which may explain its traditional use for infections.
- Anti-inflammatory Action: Flavonoids and other compounds help reduce inflammation in various conditions.
Clinical Trials
Limited clinical research exists on wild indigo. Some studies have examined its role in combination herbal formulas for respiratory tract infections, showing moderate benefits in reducing symptom severity and duration. However, the lack of large-scale, high-quality trials makes it challenging to confirm its standalone efficacy. Pharmacological studies have validated its antimicrobial and immune-stimulating properties in vitro, supporting traditional uses.
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Cautions
While wild indigo is generally considered safe in small, controlled doses, higher doses can be toxic due to its cytisine content. Potential side effects include nausea, vomiting, and dizziness. It should not be used during pregnancy, breastfeeding, or in children due to limited safety data.
Not for long-term use.
Conditions treated with Wild Indigo
Condition
Treatment Support
Application
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Condition
Treatment Support
heat-clearing immune stimulant
Application
tincture, capsule
Dosages
Tincture
1-2 ml 3 times daily
Decoction
1 cup 2-3 times daily
The information given here is designed to help you make informed choices about your health. The information is drawn from numerous sources—both traditional medicine practice, from the clinical experience of many herbalists currently practicing, and supported by decades of scientific research from the author. The research most consulted includes human clinical trials that help to determine the most effective and safe herbs for various needs, the best doses, and types of preparations.
The information offered in this database is not intended as a substitute for any that may have been prescribed by your health practitioner or physician.