1. Department of Pharmacology, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh-11451, Saudi Arabia
2. Quality Control and Research Laboratory, Experimental Animal Care Center, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh-11451, Saudi Arabia
3. Central Laboratory for Drug and Food Analysis. M.O.H., P.O. Box 59082, Riyadh-11525, Saudi Arabia