Citation Rankings
Highly Cited Researchers
Africa Highly Cited Researchers CitationMedical and Health Sciences / Pharmacy & Pharmaceutical Sciences Rankings 2025
Citation Rankings (Highly Cited Researchers) and the list of the most cited and influential researchers cover a wide range of scientific fields, spanning 197 main and sub-disciplines, as well as the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings, offering a unique service. Additionally, the list without CERN, Statistical Data, etc., provided exclusively by “AD Scientific Index”, is part of our effort to balance the situation created by CERN and researchers with statistical data, who have an advantage over others, especially those in the social and humanities fields. There should be new regulations for multi-author and CERN papers. Citation lists also reveal many rule violations and unethical practices. See also for more specific citation analyses: Scientists Last 6 years Citation Index, Universities Total Citations Rankings 2025 and Universities Last 6 Years Citations Rankings 2025
* Total Citation Counts Rankings
Ranking Based On Selection :1
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
96,140
55,671
0.579
* Total Citation Counts Rankings
Ranking Based On Selection :2
Nutrition and Non-communicable diseases
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
54,023
48,978
0.907
* Total Citation Counts Rankings
Ranking Based On Selection :3
Atherosclerosis
drug safety and musculoskeletal disease
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
48,410
47,326
0.978
* Total Citation Counts Rankings
Ranking Based On Selection :4
Antibiotic use
Resistance
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
39,739
37,252
0.937
* Total Citation Counts Rankings
Ranking Based On Selection :5
Drug related study
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
39,347
37,747
0.959
* Total Citation Counts Rankings
Ranking Based On Selection :6
Quality Use of Medicines
Medication Safety
Clinical Pharmacy
Pharmacy Practice
Evidence-based
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
38,264
34,011
0.889
* Total Citation Counts Rankings
Ranking Based On Selection :7
Patient safety
pharmacy practice
community pharmacy
optimizing antibiotics use and chronic disease management.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
33,674
31,688
0.941
* Total Citation Counts Rankings
Ranking Based On Selection :8
HIV
tuberculosis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,512
10,670
0.418
* Total Citation Counts Rankings
Ranking Based On Selection :9
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,046
15,591
0.677
* Total Citation Counts Rankings
Ranking Based On Selection :10
Microbiology and Immunology
Microbiome
Genomics
Bioinformatics
Phage
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,724
12,143
0.534
* Total Citation Counts Rankings
Ranking Based On Selection :11
Pharmacology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,861
14,497
0.695
* Total Citation Counts Rankings
Ranking Based On Selection :12
Health science
Pharmacology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,968
16,575
0.874
* Total Citation Counts Rankings
Ranking Based On Selection :13
Pharmacology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,996
17,948
0.997
* Total Citation Counts Rankings
Ranking Based On Selection :14
Pharmacognosy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,892
14,738
0.927
* Total Citation Counts Rankings
Ranking Based On Selection :15
Targeted Drug Delivery
Nanomedicines
Stimuli-Responsive Biomaterials
Molecular Pharma-Engineered Regenerative Medicines
Drug
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,465
9,563
0.661
* Total Citation Counts Rankings
Ranking Based On Selection :16
Oncology/Neuropharmacology
Autophagy
Epigenetics
Drug discovery
Bioinformatics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,309
7,137
0.499
* Total Citation Counts Rankings
Ranking Based On Selection :17
Pharmacognosy
isolation and identification of biologically active leads from natural sources
microbial metabolism and semisyn
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,093
9,813
0.696
* Total Citation Counts Rankings
Ranking Based On Selection :18
Drug Discovery
Synthetic Chemistry
Brain Diseases
Drug Resistant Bacteria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,911
10,250
0.737
* Total Citation Counts Rankings
Ranking Based On Selection :19
treatment-resistant mood disorders
psychopharmacology
clinical trials
complex interventions
psychiatric epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,289
8,564
0.697
* Total Citation Counts Rankings
Ranking Based On Selection :20
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,489
5,854
0.510
* Total Citation Counts Rankings
Ranking Based On Selection :21
Pharmaceutical Sciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,242
7,108
0.632
* Total Citation Counts Rankings
Ranking Based On Selection :22
Critical care
Acute medicine
Clinical epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,539
4,419
0.419
* Total Citation Counts Rankings
Ranking Based On Selection :23
Natural product
Antioxidant
Toxicology
Physiology
Neurobiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,173
7,167
0.781
* Total Citation Counts Rankings
Ranking Based On Selection :24
Pharmacology
toxicology
oral care
tuberculosis
cancer and cosmeceuticals
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,002
4,971
0.552
* Total Citation Counts Rankings
Ranking Based On Selection :25
Pharmacy
Health and Technology related
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,582
7,366
0.858
* Total Citation Counts Rankings
Rankings
3,224
9
5
Ranking Based On Selection: 1
Naomi Sharlene Levitt
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
96,140
55,671
0.579
* Total Citation Counts Rankings
Rankings
8,548
2
1
Ranking Based On Selection: 2
Mekonnen Sisay
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
54,023
48,978
0.907
Nutrition and Non-communicable diseases
* Total Citation Counts Rankings
Rankings
10,162
7
1
Ranking Based On Selection: 3
Abadi Kahsu Gebre
Mekelle University
Mekelle, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
48,410
47,326
0.978
Atherosclerosis
drug safety and musculoskeletal disease
* Total Citation Counts Rankings
Rankings
13,918
15
4
Ranking Based On Selection: 4
Dumessa Edessa
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
39,739
37,252
0.937
Antibiotic use
Resistance
* Total Citation Counts Rankings
Rankings
14,156
16
5
Ranking Based On Selection: 5
Jemal Abdela
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
39,347
37,747
0.959
* Total Citation Counts Rankings
Rankings
14,798
17
3
Ranking Based On Selection: 6
Tesfay Mehari Atey
Mekelle University
Mekelle, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
38,264
34,011
0.889
Quality Use of Medicines
Medication Safety
Clinical Pharmacy
Pharmacy Practice
Evidence-based
* Total Citation Counts Rankings
Rankings
18,069
20
3
Ranking Based On Selection: 7
Oumer Sada Muhammed
Addis Ababa University
Addis Ababa, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
33,674
31,688
0.941
Patient safety
pharmacy practice
community pharmacy
optimizing antibiotics use and chronic disease management.
* Total Citation Counts Rankings
Rankings
27,713
76
23
Ranking Based On Selection: 8
Gary Maartens
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,512
10,670
0.418
* Total Citation Counts Rankings
Rankings
32,215
39
10
Ranking Based On Selection: 9
Mohamed A Farag
Cairo University
Giza, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,046
15,591
0.677
* Total Citation Counts Rankings
Rankings
32,833
40
11
Ranking Based On Selection: 10
Ramy K Aziz
Cairo University
Giza, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,724
12,143
0.534
Microbiology and Immunology
Microbiome
Genomics
Bioinformatics
Phage
* Total Citation Counts Rankings
Rankings
37,051
1
1
Ranking Based On Selection: 11
Victor Kuete
Université de Dschang
Dschang, Cameroon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,861
14,497
0.695
* Total Citation Counts Rankings
Rankings
42,285
34
8
Ranking Based On Selection: 12
Kald Beshir Tuem
Mekelle University
Mekelle, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,968
16,575
0.874
Health science
Pharmacology
* Total Citation Counts Rankings
Rankings
45,383
39
9
Ranking Based On Selection: 13
Kaleab Alemayehu Zewdie
Mekelle University
Mekelle, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,996
17,948
0.997
* Total Citation Counts Rankings
Rankings
53,693
46
10
Ranking Based On Selection: 14
Helen Bitew
Mekelle University
Mekelle, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,892
14,738
0.927
* Total Citation Counts Rankings
Rankings
60,755
202
29
Ranking Based On Selection: 15
Yahya E. Choonara
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,465
9,563
0.661
Targeted Drug Delivery
Nanomedicines
Stimuli-Responsive Biomaterials
Molecular Pharma-Engineered Regenerative Medicines
Drug
* Total Citation Counts Rankings
Rankings
61,630
70
13
Ranking Based On Selection: 16
Amal Kamal Abdel Aziz|Amal Kamal Saadeldin
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,309
7,137
0.499
Oncology/Neuropharmacology
Autophagy
Epigenetics
Drug discovery
Bioinformatics
* Total Citation Counts Rankings
Rankings
62,836
72
2
Ranking Based On Selection: 17
Safwat A Ahmed
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,093
9,813
0.696
Pharmacognosy
isolation and identification of biologically active leads from natural sources
microbial metabolism and semisyn
* Total Citation Counts Rankings
Rankings
63,982
217
1
Ranking Based On Selection: 18
Thavendran Govender
University of Zululand
Kwadlangezwa, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,911
10,250
0.737
Drug Discovery
Synthetic Chemistry
Brain Diseases
Drug Resistant Bacteria
* Total Citation Counts Rankings
Rankings
74,862
62
15
Ranking Based On Selection: 19
Abebaw Fekadu
Addis Ababa University
Addis Ababa, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,289
8,564
0.697
treatment-resistant mood disorders
psychopharmacology
clinical trials
complex interventions
psychiatric epidemiology
* Total Citation Counts Rankings
Rankings
81,258
277
59
Ranking Based On Selection: 20
Helen Mcilleron
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,489
5,854
0.510
* Total Citation Counts Rankings
Rankings
83,399
286
43
Ranking Based On Selection: 21
Lisa Du Toit
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,242
7,108
0.632
Pharmaceutical Sciences
* Total Citation Counts Rankings
Rankings
90,083
16
5
Ranking Based On Selection: 22
Redouane Abouqal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,539
4,419
0.419
Critical care
Acute medicine
Clinical epidemiology
* Total Citation Counts Rankings
Rankings
105,629
147
3
Ranking Based On Selection: 23
Ahmed Abdel Moneim
Helwan University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,173
7,167
0.781
Natural product
Antioxidant
Toxicology
Physiology
Neurobiology
* Total Citation Counts Rankings
Rankings
107,911
385
30
Ranking Based On Selection: 24
Namrita Lall
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,002
4,971
0.552
Pharmacology
toxicology
oral care
tuberculosis
cancer and cosmeceuticals
* Total Citation Counts Rankings
Rankings
113,932
81
1
Ranking Based On Selection: 25
Muktar Sano Kedir|Muktar Sano Kedir Mohammed, Muktar Sano
Arsi University
Rustavi, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,582
7,366
0.858
Pharmacy
Health and Technology related