Crude drug sample data base

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Crude drug name

Market nameRawand Khatai
Urudu nameRewand
Arabic name /
Persian name		Rawand, Riwand / Bekh-rebas
English nameRhubarb roots
Original plant nameRheum webbianum Royle, Rhubarb roots
Family namePolygonaceae
Used partClassificationPlant origin
Sub classification root + rhizome
Collection informationIslamic Republic of Pakistan, Islamabad, Mashoor Davyakhana Sadar Rawalpindi
Collection date1994/1/22
CollectorTsuneo Namba
IdentifierJaved Ahmad
DescriptionFeatures:
Cylindrical, barrel shaped or plano-convex pieces of dry rhizome and root, 2 to 5cm in diameter. Outer surface greyish brown in colour, closely wrinkled with transverse annulations. Transversely cut portion shows a yellowish surface with a prominent cambium ring which encloses a hard, woody centre characterised with radiating medullary rays. Fracture - short and splintery; odour - characteristic; taste - bitter and astringent.
TMPW No.14840

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Production area information
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33.6844202
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Collection information
Islamic Republic of Pakistan,Islamabad
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Scientific information data base

Crude drug nameUrudu name,
English name		Rewand, Rhubarb roots
Arabic name / Persian nameRawand, Riwand / Bekh-rebas
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Original plant nameRheum webbianum Royle
Family namePolygonaceae
Used partRhizome / Root
Distribution areaCentral and W. alpine Himalayas, 10,000 to 11,000ft.
DescriptionAccording to some physicians rewand is the root found in China and is imported from that country. It is of various kinds. Mostly China variety is used in Unani medicine. It is the root of Rebas. It is of yellowish black in colour. Odour - strong; taste - bitter and not agreeable. On chewing the saliva turns yellowish.
Function and propertiesCosmetics, Chest, Fevers, Joints, Swellings, Ulcers, Alimentary organ, Excretion.

Stimulant and liver tonic, mild purgative, stomachic and astringent in relatively small dose, diuretic and emmenagogue, deobstruent (especially for liver and intestines).
Specific actionsDeobstruent and purgative for the harmful humours present in the intestines.
Frequency in useCommon.
Common usesCosmetics: Rhubarb is useful in freckles and other skin marks or spots when it is painted with vinegar.

Chest: It is useful in asthma and haemoptysis/hemoptysis.

Fevers: Rhubarb is beneficial in chronic and intermittent fevers.

Joints: It is most useful in cases of injuries caused by falls and beating. The drug together with its own oil proves to be useful in rupture.

Swellings: It is plastered in combination with some liquids on hot swellings.

Ulcers: Its paint with vinegar is useful in ringworms.

Alimentary organ: It is useful in the diseases of liver and stomach including weakness and painful conditions of these organs, as hiccough, intestinal rupture etc. It is good for emaciated spleen.

Excretion: It is useful in sprue, gripes, dysentery, nephralgia, cystalgia, uteralgia and bleeding.
Side effectWeak and feeble individuals (particularly children and old age) should avoid it for the purpose of purgation. Should not be given to patients already suffering from appendicitis. It is also beneficial in insect bite.
Medical systemUnani
Traditional conceptTemperamentCompound temperament (Murakkab al Quwa).
Drug effectIt is a beneficial purgative for the viscid, sticky humours and its by products. Constant use may cause abdominal colic, flatulence, watery diarrhoea/diarrhea, weight loss etc.
Dosage125 to 375mg. for constipation.
500mg. to 2gm. for loose motion.
SubstituteGul e-surkh (Rosa damascena Mill.), for liver and stomach ailments.
Related drugs i) Rheum emodi Wall.
ii) The material imported from China is the peeled rhizome of Rheum palmatum Linn.
Corrigent (corrective)Gond babul (Gum Acacia); Katira (Cochlospermum religiosum (L.) Alston) and Lu`ab Bihidana (Pyrus cydonia Linn.), mucilage.
Important compound preparationsMa`jun Talkh, Tiryaq-i-Masana, Sherbat Dinar and Ours Zarishk.
ReferencesReference book　

Tips！

Illustrated Manual of Herbal Drugs Used in Ayurveda, 1996. Sarin, Y.K., Council of Scientific & Industrial Research and Indian Council of Medical Research, New Delhi
p 6.

Indian Materia Medica, Vols. 1-2, 1976 (Repr. 1989). Nadkarni, A.K., Popular Prakashan Pvt. Ltd., Bombay
Vol. 1, pp1056-1058.

Makhzanul-Mufradat (Khawasul Adviyah), Hakeem Kabiruddin, Daftar Al-Masih, Qarol Bagh, Delhi.
pp 309-310.

A Survey of Drugs, 1961 (2nd edi.). Wahid, A. K. and Siddiqui, H. H. Institute of History of Medicine and Medical Research, Delhi.
pp 55-58.

Dictionary of Economic Plants in India, 1996 (2nd Rep.). Singh, U; Wadhwani, A. M. and Johri B.M. Indian council of Agricultural Research, New Delhi.
p 194.

Al-Qanun Fil-Tibb. Avicenna. (English translation of the critical Arabic text), Book 2, 1998. Hameed, H. A. (editor), Dept. of Islamic Studies, Jamia Hamdard (Hamdard University), New Delhi.
pp 231-232.

Indusyunic Medicine, 1997. Usmanghani, K., Saeed, A. and Alam, M. T. Department of Pharmacognosy, Faculty of Pharmacy, University of Karachi, Karachi.
pp 377-378.

RemarksIt is an important drug and is described by the Arab and Indian Unani physicians. Rhubarb of commerce known as "Turkish", "Russian", "Chinese" and "Indian" is attributed to Rheum spp., growing in the adjacent territory of South-east Tibet and Noth-West China, where from it is imported into India; also imported to a certain extent from London. Rhubarb grows well in Assam. Root of Indian drug is darker, inferior in aroma and coarser and untrimmed. Chinese rhubarb is considered superior. Avicenna (Ibn Sina) has also mentioned the Chinese variety as the good source of Rewand. It is in the list of drugs used exclusively in Unani medicine.
Last renewal date2024/03/12
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