Hyoscyamus niger Linn

Hypericum perforatum Linn. 319

Habitat ► Native to Europe and Asia. Occurs in the temperate Himalayas from Kashmir to Garhwal.

English ► Indian Henbane, Black Henbane.

Ayurvedic ► Paarsika-yavaani, Yavaani, Madkaarini, Turushkaa, Khuraashaanikaa, Khuraasaani Ajwaayin.

Unani ► Barz-ul-Banj, Khuraasaani Ajwaayin.

Siddha/Tamil ► Paarseekayavani, Khurasani Omam.

Action ► Sedative. Narcotic drug. Used for convulsions. Action similar to Belladonna.

Key application ► In spasms of gastrointestinal tract. (German Commission E, The British Herbal Pharmacopoeia.)

The leaves and flowering tops contain tropane alkaloids, 0.045-00.14%, the principal ones being hyoscyamine and hyoscine. The alkaloids are para-sympatholytic, with similar actions to Belladonna, although with less cerebral excitement.

The seeds show inhibitory activity against digestive enzyme, lipase in vitro.

Contraindicated in tachycardias, prostatic hyperplasia, narrow-angle glaucoma, acute pulmonary oedema, stenosis of gastrointestinal tract, maga colon.

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