Citation Rankings
Highly Cited Researchers
Medical and Health Sciences / Pharmacy & Pharmaceutical Sciences Highly Cited Researchers Citation Rankings 2025
The Citation Rankings (Highly Cited Researchers) highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the 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
Biopharmaceutics
Pharmaceutical Microbiology
Biotechnology
Nanomedicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,402
3,831
0.518
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Natural Products Medicinal Chemistry and Drug Discovery
Organic Spectroscopy
Pharmaceutical Biotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,190
1,985
0.622
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Environmental/Heavy Metal Toxicology
Reproductive Toxicology
Risk Assessment
Pharmacokinetics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,543
535
0.347
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Vaccinology and Immunology
Viral and Bacterial Infections
Antimicrobial resistance
Pharm Quality
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,533
1,271
0.829
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Herbal supplements
Heavy metal contamination
Ectotoxicology
Pharmacokinetics
environmental toxicology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,450
626
0.432
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Pharmaceutical Microbiology&Biotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,385
1,137
0.821
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Ethnopharmacology
Toxicology and Malaria chemotherapy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,225
683
0.558
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Pharmacology
Gene Therapy
Virology
Hospital Medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
939
272
0.290
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Drug discovery
Antimicrobial Resistance
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
887
757
0.853
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Trace Elements Metabolism and Toxicology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
886
394
0.445
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Formulation Science
Biopharmaceutics
Drug Delivery and Nanomedicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
830
604
0.728
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Clinical Pharmacy
Community Pharmacy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
791
679
0.858
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Pharmaceutical Care
Pharmacy Practice
Clinical Pharmacy
Public Health Pharmacy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
776
666
0.858
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Medicinal Chemistry
Drug Design
Natural Products
Pharmaceutical Quality Assurance
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
618
350
0.566
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Clinical pharmacy
renal pharmacy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
568
220
0.387
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Pharmcokinetics
Pharmacy Practice & Health Service Research with bias for Pharmacokinetic studies
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
494
411
0.832
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Excipient development
pharmaceutical particle engineering and drug delivery
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
457
284
0.621
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Pharmaceutical Nanotechnology
Drug Delivery
theranostics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
449
236
0.526
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Antimicrobial Evaluations
Drug Resistance genes
Malaria Genetics and Pharmaceutical Biotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
422
310
0.735
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Microbiology
Biotechnology
Mycology
Drug resistance
Pharmaceutical sciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
421
276
0.656
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Drug formulation and delivery
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
408
337
0.826
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Organic Chemistry and Natural product chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
382
315
0.825
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Pharmacology
Nutrition and Medical Biochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
367
356
0.970
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Natural products research
Pharmaceutical Analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
348
286
0.822
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Pharmaceutical care and Pharmacotherapy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
307
283
0.922
* Total Citation Counts Rankings
Rankings
137,897
73
2
Ranking Based On Selection: 1
Charles O Esimone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,402
3,831
0.518
Biopharmaceutics
Pharmaceutical Microbiology
Biotechnology
Nanomedicine
* Total Citation Counts Rankings
Rankings
306,701
347
10
Ranking Based On Selection: 2
Festus Basden Chiedu Okoye
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,190
1,985
0.622
Natural Products Medicinal Chemistry and Drug Discovery
Organic Spectroscopy
Pharmaceutical Biotechnology
* Total Citation Counts Rankings
Rankings
526,032
1,139
23
Ranking Based On Selection: 3
Onyenmechi Johnson Afonne
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,543
535
0.347
Environmental/Heavy Metal Toxicology
Reproductive Toxicology
Risk Assessment
Pharmacokinetics
* Total Citation Counts Rankings
Rankings
528,100
1,157
24
Ranking Based On Selection: 4
Angus Nnamdi Oli
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,533
1,271
0.829
Vaccinology and Immunology
Viral and Bacterial Infections
Antimicrobial resistance
Pharm Quality
* Total Citation Counts Rankings
Rankings
547,044
1,273
28
Ranking Based On Selection: 5
Ejeatuluchukwu Obi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,450
626
0.432
Herbal supplements
Heavy metal contamination
Ectotoxicology
Pharmacokinetics
environmental toxicology
* Total Citation Counts Rankings
Rankings
562,737
1,345
31
Ranking Based On Selection: 6
Malachy Chigozie Ugwu
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,385
1,137
0.821
Pharmaceutical Microbiology&Biotechnology
* Total Citation Counts Rankings
Rankings
605,688
1,573
40
Ranking Based On Selection: 7
Akuodor Godwin C.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,225
683
0.558
Ethnopharmacology
Toxicology and Malaria chemotherapy
* Total Citation Counts Rankings
Rankings
701,149
2,419
67
Ranking Based On Selection: 8
Edward C Nwanegbo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
939
272
0.290
Pharmacology
Gene Therapy
Virology
Hospital Medicine
* Total Citation Counts Rankings
Rankings
721,439
2,679
75
Ranking Based On Selection: 9
Peter M. Eze
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
887
757
0.853
Drug discovery
Antimicrobial Resistance
* Total Citation Counts Rankings
Rankings
722,114
2,687
76
Ranking Based On Selection: 10
Emmanuel Dioka
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
886
394
0.445
Trace Elements Metabolism and Toxicology
* Total Citation Counts Rankings
Rankings
745,355
3,013
86
Ranking Based On Selection: 11
Chukwuebuka Emmanuel Umeyor
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
830
604
0.728
Formulation Science
Biopharmaceutics
Drug Delivery and Nanomedicine
* Total Citation Counts Rankings
Rankings
762,192
3,271
94
Ranking Based On Selection: 12
Brian O Ogbonna
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
791
679
0.858
Clinical Pharmacy
Community Pharmacy
* Total Citation Counts Rankings
Rankings
768,766
3,355
98
Ranking Based On Selection: 13
Brian Onyebuchi Ogbonna|Brian O Ogbonna, BO Ogbonna, Ogbonna BO
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
776
666
0.858
Pharmaceutical Care
Pharmacy Practice
Clinical Pharmacy
Public Health Pharmacy
* Total Citation Counts Rankings
Rankings
846,245
4,671
145
Ranking Based On Selection: 14
Uzochukwu (Akabogu) Ikemefuna Chijioke
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
618
350
0.566
Medicinal Chemistry
Drug Design
Natural Products
Pharmaceutical Quality Assurance
* Total Citation Counts Rankings
Rankings
873,537
5,184
171
Ranking Based On Selection: 15
Ele Grace Nkiruka
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
568
220
0.387
Clinical pharmacy
renal pharmacy
* Total Citation Counts Rankings
Rankings
922,738
6,116
206
Ranking Based On Selection: 16
Sunday Odunke Nduka
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
494
411
0.832
Pharmcokinetics
Pharmacy Practice & Health Service Research with bias for Pharmacokinetic studies
* Total Citation Counts Rankings
Rankings
954,804
6,724
231
Ranking Based On Selection: 17
Okoye Ebere Innocent
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
457
284
0.621
Excipient development
pharmaceutical particle engineering and drug delivery
* Total Citation Counts Rankings
Rankings
961,989
6,858
236
Ranking Based On Selection: 18
Ifeanyi Nzekwe
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
449
236
0.526
Pharmaceutical Nanotechnology
Drug Delivery
theranostics
* Total Citation Counts Rankings
Rankings
986,824
7,335
260
Ranking Based On Selection: 19
Moses Nkechukwu Ikegbunam
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
422
310
0.735
Antimicrobial Evaluations
Drug Resistance genes
Malaria Genetics and Pharmaceutical Biotechnology
* Total Citation Counts Rankings
Rankings
987,905
7,362
264
Ranking Based On Selection: 20
Chidimma R. Chukwunwejim
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
421
276
0.656
Microbiology
Biotechnology
Mycology
Drug resistance
Pharmaceutical sciences
* Total Citation Counts Rankings
Rankings
1,000,517
7,609
270
Ranking Based On Selection: 21
Emmanuel Maduabuchi Uronnachi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
408
337
0.826
Drug formulation and delivery
* Total Citation Counts Rankings
Rankings
1,026,906
8,098
289
Ranking Based On Selection: 22
Blessing Ogechukwu Umeokoli
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
382
315
0.825
Organic Chemistry and Natural product chemistry
* Total Citation Counts Rankings
Rankings
1,042,505
8,407
301
Ranking Based On Selection: 23
Ezeigwe Obiajulu Christian
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
367
356
0.970
Pharmacology
Nutrition and Medical Biochemistry
* Total Citation Counts Rankings
Rankings
1,064,066
8,867
324
Ranking Based On Selection: 24
Chika C. Abba
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
348
286
0.822
Natural products research
Pharmaceutical Analysis
* Total Citation Counts Rankings
Rankings
1,114,766
9,876
366
Ranking Based On Selection: 25
Maureen Ugonwa Anetoh
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
307
283
0.922
Pharmaceutical care and Pharmacotherapy