Table of Contents
ISRN Pharmaceutics
Volume 2012, Article ID 472586, 5 pages
Research Article

Effects of Aqueous Extract of Fresh Leaves of Abroma augusta L. on Oral Absorption of Glucose and Metformin Hydrochloride in Experimental Rats

Department of Pharmacy, University of Rajshahi, Rajshahi 6205, Bangladesh

Received 27 March 2012; Accepted 7 May 2012

Academic Editors: T. Narender and C. Saturnino

Copyright © 2012 Tariqul Islam et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


To get better control in disease conditions, many people take herbs with conventional medicines, therefore, posing a risk of potential pharmacokinetic interactions between herbs and conventional drugs. The aqueous extract of the fresh leaves of Abroma augusta L. (Family: Sterculiaceae, Bengali name: Ulatkambal, English name: Devil's cotton, DC) is viscous and used traditionally to treat diabetes mellitus. This study was done to investigate the probable mechanism by which the aqueous extract of Abroma augusta L. is beneficial in managing type 2 DM and to observe the effects of this extract on absorption of metformin hydrochloride from the gastrointestinal tract. Studies were conducted in healthy Long Evans rats using Na-carboxymethyl cellulose (CMC) as positive control. Both Na-CMC and WSF of DC significantly ( 𝑃 < 0 . 0 5 ) reduced the absorption of glucose administered orally in fasted rats. On the other hand, WSF of DC significantly ( 𝑃 < 0 . 0 5 ) reduced the absorption of metformin hydrochloride in alloxan-induced diabetic rats. The results of this study suggest that WSF of DC may be beneficial in diabetic patients to improve glycemic control but should not be coadministered with metformin HCl for management of type 2 diabetes mellitus.