1992-to date Professor, Department of Pharmacognosy, Faculty of Pharmacy, University
of Khartoum.
1985-92 Associate Professor, Department of Pharmacognosy, Faculty of Pharmacy,
University of Khartoum.
1982-85 Assistant Professor, Department of Pharmacognosy, Faculty of Pharmacy,
University of Khartoum.
1977-82 Teaching Assistant, Department of Pharmacognosy, Faculty of Pharmacy,
University of Khartoum.