संस्कृत नाम- फारसीक यवानी
Botanical name - Hyoscyamus niger
Description - An annual or biennial bad-smelling herb, densely covered with glandular hairs; stem up to 1meter high. Lower basal leaves 15-20 cm, margins toothed. Upper leaves smaller divided into many segments. Flowers 2-3 cm diameter, pale green, streaked with purple, some borne solitary at the branching of stems, others in long, terminal spikes. 1.3 cm diameter, globose.
Chemical_Constituents- It contains about 0.05 per cent of Total alkaloid, consisting of hyoscyamine and scopolamine, And also fixed oil up to 20%
Uses - The dried leaves and flowering tops collected soon flowering of the plant constitute the drug. The drug has similar properties as Belladonna (Atropa belladonna). It is useful for relieving certain painful spasmodic conditions of muscles, and in hysteria, cough, etc. It also dilates the pupil of the eye. Seeds of the plant also have medicinal properties, they are usually, pasted and applied locally on pains