1. Natural Products Research Unit, Department of Biological and Biomedical, Sciences; Aga Khan University Medical College; Karachi 74800 Pakistan
2. Department of Pharmacology, Faculty of Pharmacy; University of Karachi; Karachi Pakistan
3. Department of Pharmacy; University of Malakand, Chakdara; Dir (L) Pakistan
4. Department of Pharmacology, Riphah Institute of Pharmaceutical Sciences; Riphah International University; Islamabad Pakistan
5. Department of Basic Medical Sciences, Faculty of Pharmacy; Gomal University; D.I.Khan Pakistan
6. Department of Pharmacy, College of Health Sciences; Mekelle University; Mekelle Ethiopia