Abstract
The methanol extract of the flowers of Lagerstroemia parviflora Roxb (Family: Lythraceae) was investigated for its effect on a cough model induced by sulphur dioxide gas in mice. It exhibited significant antitussive activity when compared with the control in a dose-dependent manner. The extract (100, 200, 300 mg kg−1) showed maximum inhibition of cough reflex at 90 min after drug administration and the antitussive activity was comparable to that of codeine phosphate, a standard antitussive agent.
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