Leaves and stems - raw or cooked. They can also be made into an acid peppery condiment[183]. They are very hot[116]. The leaves contain about 7.5% protein, 1.9% fat, 8% carbohydrate, 2% ash[179]. The leaves are said to contain rutin[218]. Seed - raw or cooked. It is rather small and fiddly to utilize. The seed is used as a condiment - a pepper substitute[100]. The sprouted seeds or young seedlings can be used as a garnish or added to salads, they are commonly sold in Japanese markets[183]. They are very hot[116, 179].

Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.


Smartweed has a long history of herbal use, both in Eastern and Western herbalism. It is not used very often, and is seen more as a domestic remedy being valued especially for its astringent properties which makes it useful in treating bleeding, skin problems, diarrhoea etc. The leaves are anti-inflammatory, astringent, carminative, diaphoretic, diuretic, emmenagogue, stimulant, stomachic, styptic[4, 9, 21, 147, 152]. They contain rutin, which helps strengthen fragile capillaries and thus helps prevent bleeding[222]. Use with caution[21]. The seed is carminative, diuretic and stimulant[218]. The whole plant, either on its own or mixed with other herbs, is decocted and used in the treatment of a wide range of ailments including diarrhoea, dyspepsia, itching skin, excessive menstrual bleeding and haemorrhoids[218, 254]. A poultice of the plant is used in treating swollen and inflamed areas[257]. In Chinese tests, the plant was ranked 20th in a survey of 250 potential antifertility drugs[218]. A homeopathic remedy is made from the leaves[9]. It is used in the treatment of piles, menstrual pains and other menstrual complaints[9].

A yellow-gold dye is obtained from the stalks[106].

Special Uses