Pergularia extensa N E Br

Family ► Asclepiadaceae; Periplo-caceae.

Habitat ► Throughout India and hotter parts.

English ► Hairknot Plant, Whitlow Plant.

Ayurvedic ► Uttamaarani,

Vrischikaali, Vishaanikaa. Phala-kantaka. Ajashringi is a doubtful synonym.

Siddha/Tamil ► Utthaamani, Veli-paruthi.

Action ► Plant—Uterine stimulant, tones up urinary bladder, stimulates gastric secretion, expectorant, emetic. Leaf—used for amenorrhoea, dysmenorrhoea; externally applied to carbuncles.

The plant gave betaine, a polypeptide, hentriacontane, lupeol, alpha-and beta-amyrin, beta-sitosterol as major constituents. Seeds and stems gave car-denolides—calactin, calotropin, calo-tropagenin, uzarigenin and coroglau-cigenin.

The plant extract exhibits stimulating action on uterine and other involuntary muscles. The extracts cause rise in arterial blood pressure, increase in movement and tone of urinary bladder, and stimulation of gastric secretions. An aqueous extract of the leaves shows antibacterial activity against E. coli and Micrococcus pyogenes var. aureus.

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