VIDARI (Tuberous Root)
Vidari consists of sliced and dried pieces of tuberous root of Pueraria tuberosa DC. (Fam. Fabacem); a perennial climber with very large tuberous root, distributed nearly throughout the country except in very humid or very arid regions and ascending upto 1200 m.
SYNONYMS
Sanskrit : Vidari, Vidarika, Bhumikusmanda
Assamese : Bhedeleton, Bhuikumra
Bengali : Vidari, Bhumikusmanda, Bhuinkumra
English : —
Gujrati : Vidarikanta, Bhonykoru, Eagio, Bhoikolu, Sakharvel
Hindi : Vidarikanda
Kannada : Nelagumbala Gudde, Nelagumbala, Gumadi belli, Nelagumbula,
Gumadigida
Kashmiri : —
Malayalam : Mudakku
Marathi : Bhuikohala, Ghodvel
Oriya : Bhuiankakharu
Punjabi : —
Tamil : Nilapoosani
Telugu : Nelagummuda, Darigummadi
Urdu : —
DESCRIPTION
a) Macroscopic
Drug available in the form of longitudinally sliced pieces of variable size; outer surface reddish-brown, smooth except for protuberances at some places; cut surface creamish-brown, starchy and somewhat porous; usually does not break, but pliable; taste, sweetish.
b) Microscopic
Tuberous Root – Mature tuber shows 20-30 layers of cork consisting of rectangular, thinwalled, tangentially elongated and radially arranged cells filled with dark reddish-brown content except in a few inner layers; secondary cortex consists of 6-15 layers of circular, oval to rectangular and tangentially elongated, thin-walled cells, yellow band of 2-6 layers of compactly arranged stone cells present towards inner side of cortex; stone cells moderately thick-walled, varying in shape and size and having well marked striations and pits; a number of prismatic crystals of calcium oxalate found in parenchymatous cells, and also rarely in stone cells; secondary phloem consists of sieve elements and phloem parenchyma having a number of strands of phloem fibres and a few stone cells; sieve elements somewhat collapsed in outer region forming tangential bands; phloem fibres much elongated, highly thickened, lignified with narrow lumen; a number of tanniniferous ducts filled with brown content, distributed throughout this region; xylem forms whole of inner white spongy zone, consisting of several concentric rings of one or a few xylem vessels associated with a few xylem elements; vessels mostly drum-shaped having reticulate thickening; xylem rays multi seriate and well marked consisting of thin walled, radially elongated cells, a few latex duct also present; plenty of starch grains mostly simple, somewhat round, angular to oval, having central hilum and striations, measuring 5.5 – 13.75 n in dia. present in all parenchymatous cells.
Powder – Buff coloured; shows plenty of starch grains with central hilum and striations measuring 5.5 – 13.75 n in dia., fragments of cork, prismatic crystals of calcium oxalate, a few xylem vessels with reticulate thickening and phloem fibres.
IDENTITY, PURITY AND STRENGTH
Foreign matter Not more than 2 per cent, Appendix 2.2.2.
Total Ash Not more than 17 per cent, Appendix 2.2.3.
Acid-insoluble ash Not more than 4.5 per cent, Appendix 2.2.4.
Alcohol-soluble extractive Not less than 4 per cent, Appendix 2.2.6.
Water-soluble extractive Not less than 24 per cent, Appendix 2.2.7.
CONSTITUENTS – Gluconic and Malic acids.
PROPERTIES AND ACTION
Rasa : Madhura
Guna : Guru, Snigdha
Virya : Sita
Vipaka : Madhura
Karma : Sukrala, Balya, Mutrala, Pittahara, Rasayana, Svarya, Vatahara, Varnya, Stanyada, Jivaniya, Brmhaniya
IMPORTANT FORMULATIONS – Marma Gutika, Vidaryadikvatha Curna, Vidaryadi Ghrta, Manmathabhra Rasa, Pugakhanda (Aparah).
THERAPEUTIC USES – Daha, Raktapitta, Angmarda, Daurbalya, Sosa.
DOSE – 3-6 g. of the drug in powder form.
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