1. Department of Pharmaceutics and Social Pharmacy, School of Pharmacy, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
2. Department of Pharmacognosy, College of Medicine and Health Sciences, Bahir Dar University, Bahir Dar, Ethiopia
3. Department of Pharmaceutics, College of Medicine and Health Sciences, Bahir Dar University, Bahir Dar, Ethiopia
4. Department of medicinal chemistry, College of Medicine and Health Sciences, Bahir Dar University, Bahir Dar, Ethiopia
5. Department of Pharmacology, School of Pharmacy, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia