Botanical Overview
Ink Nut (Terminalia chebula) is a flowering plant in the Combretaceae family. Traditional medicine systems have documented several valuable applications for this species, supported by its observed therapeutic effects. The combretum family (Combretaceae) includes trees, shrubs, and climbers with simple, opposite or alternate leaves and small flowers with four or five petals. The fruits are often winged or ridged. Many species contain tannins and have astringent, antimicrobial properties.
General Description
Terminalia chebula, commonly known as black- or chebulic myrobalan, is a species of Terminalia, native to South Asia from India, Pakistan and Nepal east to southwest China (Yunnan), and south to Sri Lanka, Malaysia, and Vietnam.
Family Context
The Combretaceae family is widely distributed. Notable medicinal members include:
- Indian Almond — 44 documented uses
- Arjun — 27 documented uses
- Rangoon Creeper — 21 documented uses
- Beleric Myrobalan — 12 documented uses
Geographic Distribution
Ink Nut has been recorded in 10 countries and territories worldwide, including Congo (DRC), China, India, Cambodia, Sri Lanka, and others.
Traditional Uses
Ink Nut has been traditionally used for digestive health, respiratory conditions, and pain and inflammation, among other applications.
Digestive health.
- Laxative
- Diarrhea
- Carminative
For digestive complaints, the herb is typically prepared as a tea or decoction taken before meals. The bitter compounds stimulate digestive secretions and improve nutrient absorption. Some traditions use the powdered root or leaves in small doses as a stomachic tonic.
Respiratory conditions.
- Cough
- Asthma
- Bronchitis
Respiratory conditions are addressed through steam inhalation of the herb’s vapors or internal use as a warm tea. The hot infusion acts as an expectorant, helping to loosen phlegm and clear congestion. Some traditions combine it with honey for coughs.
Pain and inflammation.
- Inflammation
For pain and inflammation, preparations are applied both topically as compresses and taken internally. A warm poultice draws blood to the area and promotes healing, while internal preparations address systemic inflammation.
Active Compounds
Phytochemical research has identified 30 compounds in this species, including a diverse array of phytochemical classes (see the Complete Chemical Inventory below for the full list).
The identified compounds include the following categories:
- Flavonoid: antioxidant compounds that protect cells from oxidative damage
- Sterol: cholesterol-like compounds with anti-inflammatory properties
- Alkaloid: nitrogenous compounds with diverse pharmacological activities