Botanical Overview
Caper Spurge (Euphorbia lathyris) is a flowering plant in the Euphorbiaceae family. Traditional medicine systems have documented several valuable applications for this species, supported by its observed therapeutic effects. The spurge family (Euphorbiaceae) includes an extremely diverse group of plants ranging from small herbs to large trees, many with milky sap that can be irritating or toxic. The flowers are typically small and unisexual, often arranged in distinctive inflorescences. Many species contain diterpene esters and other bioactive compounds.

General Description
Other names occasionally used include gopher spurge, gopher plant or mole plant.
Family Context
The Euphorbiaceae family is large and globally distributed. Notable medicinal members include:
- Castorbean — 105 documented uses
- Physic Nut — 95 documented uses
- Queensland Asthma Herb — 53 documented uses
- Spanish Physic Nut — 45 documented uses
Geographic Distribution
Caper Spurge has been recorded in 10 countries and territories worldwide, including Argentina, Belgium, Canada, China, Germany, and others.
Traditional Uses
Caper Spurge has been traditionally used for digestive health, skin and wound care, and urinary tract health, among other applications.
Digestive health.
- Diarrhea
- Purgative
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.
Skin and wound care.
- Skin
- Sore
For skin conditions, the fresh or dried plant is applied topically as a poultice, wash, or compress. A strong decoction can be used to clean wounds and sores. The antimicrobial properties help prevent infection while promoting tissue repair.
Urinary tract health.
- Diuretic
Urinary tract applications typically involve drinking the herb as a mild tea, which increases urine production and helps flush the urinary system. It may be combined with other demulcent herbs to soothe irritated tissues.
Active Compounds
Phytochemical research has identified 26 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:
- Sterol: cholesterol-like compounds with anti-inflammatory properties
- Alkaloid: nitrogenous compounds with diverse pharmacological activities