1. Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University , P.O. Box 55760 , Riyadh – 1145 , Saudi Arabia
2. Biology Department, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU) , Riyadh 11623 , Saudi Arabia
3. Department of Pharmacognosy, College of Pharmacy, King Saud University , P.O. Box 2457 , Riyadh 11451 , Saudi Arabia
4. College of Medicine, Research Center, King Saud University , P.O. Box 2925 , Riyadh 11451 , Saudi Arabia