Botanical Overview
Hsin-I (Magnolia kobus) belongs to the Magnoliaceae family. Limited but reliable traditional records indicate this plant has recognized medicinal applications in one or more healing traditions. This species belongs to the Magnoliaceae family, a group of flowering plants.

General Description
It is a deciduous, small to tall tree which has a slow rate of growth but can reach 8–15 m (25–50 ft) in height and up to 10 m (35 ft) in spread.
Family Context
The Magnoliaceae family is widely distributed. Notable medicinal members include:
- Champac — 45 documented uses
- Chinese Magnolia — 36 documented uses
- Ho-no-ki — 10 documented uses
- Hsin-I — 3 documented uses
Geographic Distribution
Hsin-I has been recorded in 10 countries and territories worldwide, including Canada, Germany, Estonia, Japan, South Korea, and others.
Traditional Uses
Hsin-I has been traditionally used for respiratory conditions, pain and inflammation, and nervous system disorders.
Respiratory conditions.
- Cold
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.
- Anodyne
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.
Nervous system disorders.
- Sedative
Nervous system support involves taking the herb as a warm tea, often in the evening or before bed. The calming compounds interact with neurotransmitter systems to promote relaxation and restful sleep.
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