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Depression: 21st Century Solutions + The Dark Side of Wheat

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Abstract Title:

Antitussive and toxicological evaluation of Vitex negundo.

Abstract Source:

Nat Prod Res. 2012 ;26(5):484-8. Epub 2011 Aug 2. PMID: 21809956

Abstract Author(s):

Rizwan-ul Haq, Azhar-ul-Haq Ali Shah, Arif-ullah Khan, Zahoor Ullah, Habib-ullah Khan, Rafeeq Alam Khan, Abdul Malik

Article Affiliation:

Rizwan-ul Haq

Abstract:

Vitex negundo Linn. (Verbenaceae) is used in traditional medical system for respiratory disorders. This study was carried out to investigate its cough-relieving potential. The antitussive effect of the butanolic extract of V. negundo (Vn) on sulphur dioxide (SO(2))-induced cough was examined in mice. Safety profile of Vn was carried out by observing acute neurotoxicity, median lethal dose (LD(50)) and behavioural signs. Vn dose-dependently (250-1000 mg kg(-1)) inhibited the cough provoked by SO(2) gas in mice and exhibited maximum protection after 60 min of administration. At 1000 mg kg(-1), Vn caused maximum cough-suppressive effects i.e. cough inhibition at 60 min was 67.4%, as compared to codeine (10 mg kg(-1)), dextromethorphan (10 mg kg(-1)) and saline having cough-inhibitory potential 75.7%, 74.7% and 0%, respectively. LD(50) value of V. negundo was found to be greater than 5000 mg kg(-1). In toxicity tests, no signs of neural impairment and acute behavioural toxicity were observed at antitussive doses and extract has been well tolerated at higher doses. These results indicate that V. negundo exhibits antitussive effect and it was found devoid of toxicity.

Study Type : Animal Study
Additional Links
Pharmacological Actions : Antitussive Agents : CK(12) : AC(2)

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Sayer Ji
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Depression: 21st Century Solutions + The Dark Side of Wheat

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