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the source is polygala l.

The Ishtod Family - Polygalaceae

Истод горький – Polygala amara L. Истод горький – Polygala amara L. Истод тонколистный – Polygala tenuifolia L.

Botanical characteristic. Perennial herbaceous plant or shrub. Ordinary ones are characterized by regular, rarely opposite or whorled simple leaves, sometimes with glands on the petioles.

Spread. In temperate regions, only herbaceous plants grow. The sources are plants of wet and dry meadows, meadow steppes, savannahs, rocky mountain slopes, pine forests and moist deciduous forests. They grow on sandy soils, in swamps.

Several species grow. The most healing are:

  • The bitter source is P. amara L. The many-headed root, from which several erect stems up to 20 cm tall develop. The leaves form a basal rosette of lanceolate leaves and are alternately located on the stem. Flowers with small opaque leaves are collected in the final brush. Petals are ovoid. Anterior petal with four-lobed appendage, lateral pterygoid, usually blue, less often reddish, sometimes white. It blooms from May to June. The fruit is a box.
  • Thin-leaved source - P. tenuifolia L. The root is short, pivotal. Leaves lanceolate, sessile. The stems are short, thin, pinnate, numerous. Blue flowers of irregular shape, collected in a sparse side brush. The fruit is a box. It blooms in May - July.

Both species are similar in chemical composition, and can be used similarly for therapeutic purposes.

Chemical composition. It contains carbohydrates and related compounds, saponins, terpenoids, tannins, bitterness, essential oil, nitrogen-containing compounds, phenol carboxylic acids, coumarins, xanthones, flavonoids. Seeds contain fatty oil.

Istod is a substitute for American Senega and is not inferior to it in its healing properties, but surpasses it in some indications.

Used parts of the plant. Medicinal raw material is the whole plant, collected in the usual way during flowering. The plant is pulled out with the root and dried in bunches under a canopy.

Application. The people used the source for a very long time. The roots are included in the domestic pharmacopeia of the 8th to 9th editions. Official in China, Japan. Used in homeopathy.

A decoction of the roots is used for acute and chronic diseases of the respiratory tract, bronchitis, laryngitis, pharyngitis, bronchopneumonia, lung abscesses, asthma, cough.

Infusions and decoctions of the aerial part are used for cystitis, diseases of the gastrointestinal tract, rheumatism, kidney disease, diarrhea; externally - with tumors, abscesses, bruises, boils, with bites of snakes and poisonous insects, as a wound healing.

In the experiment, the preparations of istoda promote the excretion and liquefaction of sputum, increase the tone of the smooth muscles of the intestines, have a mucus-like effect, increase the activity of the salivary glands, and stimulate the cough center reflexively.

In Tibetan medicine is used for gastrointestinal diseases; in Chinese - as an antispasmodic, choleretic, tonic, tonic, promoting longevity, a remedy for hypertension, heart neurosis, diabetes, jade; included in complex recipes for vegetoneurosis, insomnia, atherosclerosis, anemia, breast carcinoma and other forms of cancer, lymphogranulomatosis; in China and Japan - with impotence, memory loss, as a sedative, anticonvulsant, tonic and anti-febrile remedy.

The plant is recommended to be introduced into the culture, it is very valuable for medicine and can be used in the production of tonic and medicinal drinks.


  • For infusion, take 20 g of grass, pour 200 ml of boiling water, insist on a boiling bath for 15 minutes, cool for 45 minutes, filter, bring to the desired volume. Apply 1/3 cup 3 times a day.
  • For a decoction, 15 g of the roots are poured with boiling water, insisted for 30 minutes, cooled for 10 minutes. Take 2 tbsp. tablespoons 3-4 times a day after meals.