Abstract
This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy).
This article has been retracted at the request of the Editor-in-Chief because the author has plagiarized in its entirety an article that has already been published in 2008 by Ahmed M. Alafeefy [Pharmaceutical Biology, 2008 Vol. 46 Issue 10–11, pp. 751–756, http://dx.doi.org/10.1080/13880200802315907]. The author was contacted through the Scientific Council of the King Saud University and Saudi Chemical Society and it was decided by the council to withdraw the article due to duplication of content.
This article represents a severe abuse of the scientific publishing system. The scientific community takes a very strong view on this matter and apologies are offered to readers of the journal that this was not detected during the submission process.