Citation Rankings
Highly Cited Researchers
Medical and Health Sciences / Pharmacology and Toxicology Highly Cited Researchers 343 Scientists Citation Rankings - 2025
The Citation Rankings (Highly Cited Researchers) list 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
Toxinology
Experimental Pathology
Antivenoms
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
47,475
17,171
0.362
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Toxicology
Pharmacology
Nutrition
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,846
10,547
0.230
* Total Citation Counts Rankings
Ranking Based On Selection: 3
toxicology-pharmacology-chemistry
health economy
Science Management
Security and Military Research
Technology Transfer in Biomedicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
41,953
26,060
0.621
* Total Citation Counts Rankings
Ranking Based On Selection: 4
toxicology
risk assessment
carcinogenicity
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30,411
3,974
0.131
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Pharmacology
Toxicology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,842
4,902
0.164
* Total Citation Counts Rankings
Ranking Based On Selection: 6
metabolism
pharmacology
energy expenditure
obesity
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,481
5,568
0.272
* Total Citation Counts Rankings
Ranking Based On Selection: 7
cancer
pharmacology
pharmaceutical sciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,171
5,186
0.271
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Toxicology
physiologically relevant cell bioassays
pesticides
natural compounds
endocrine disruption/cancers
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,108
7,010
0.367
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Histaminergic receptors
Glaucoma
CA IX Inhibitors
inflammation
nitric oxide
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,416
3,612
0.196
* Total Citation Counts Rankings
Ranking Based On Selection: 10
tissue engineering
stem cells
genome editing
heart failure
translation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,003
7,577
0.421
* Total Citation Counts Rankings
Ranking Based On Selection: 11
precision medicine
precision environmental health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,965
2,334
0.130
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Experimental pharmacology and toxicology
Oxidative stress in health and disease
NAFLD
Vitamin C
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,322
7,426
0.455
* Total Citation Counts Rankings
Ranking Based On Selection: 13
annexin A1
inflammation
cancer
mutagenesis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,676
471
0.032
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,623
5,932
0.406
* Total Citation Counts Rankings
Ranking Based On Selection: 15
G-protein coupled receptors
prostanoid receptors
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,558
1,204
0.083
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Toxicology
Pharmacology
Life Sciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,088
1,960
0.139
* Total Citation Counts Rankings
Ranking Based On Selection: 17
toxicology
drug metabolism
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,197
1,030
0.078
* Total Citation Counts Rankings
Ranking Based On Selection: 18
neuroendocrinology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,181
736
0.060
* Total Citation Counts Rankings
Ranking Based On Selection: 19
toxicology
pharmacology
liver
adverse drug reactions
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,258
4,840
0.430
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Immunotoxicology
developmental neuroimmunotoxicology
environmental contaminants
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,215
8,916
0.795
* Total Citation Counts Rankings
Ranking Based On Selection: 21
pharmacology
toxicology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,056
3,463
0.313
* Total Citation Counts Rankings
Ranking Based On Selection: 22
arrhythmias
calcium handling
atria
myocytes
atrial fibrillation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,667
4,775
0.448
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,323
1,420
0.138
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Epigenetics
Multi-omics
Histone modifications
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,090
2,801
0.278
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Pharmacology and Toxicology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,826
4,196
0.427
* Total Citation Counts Rankings
Rankings
11,104
2
2
Ranking Based On Selection: 1
José María Gutiérrez
Universidad de Costa Rica
San José, Costa Rica
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
47,475
17,171
0.362
Toxinology
Experimental Pathology
Antivenoms
* Total Citation Counts Rankings
Rankings
11,744
287
21
Ranking Based On Selection: 2
A Bast
Maastricht University
Maastricht, Netherlands
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,846
10,547
0.230
Toxicology
Pharmacology
Nutrition
* Total Citation Counts Rankings
Rankings
13,573
16
1
Ranking Based On Selection: 3
Kamil Kuca
University of Hradec Králové
Hradec Králové, Czech Republic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
41,953
26,060
0.621
toxicology-pharmacology-chemistry
health economy
Science Management
Security and Military Research
Technology Transfer in Biomedicine
* Total Citation Counts Rankings
Rankings
22,503
10,364
2
Ranking Based On Selection: 4
Gary M Williams
New York Medical College
Valhalla, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30,411
3,974
0.131
toxicology
risk assessment
carcinogenicity
* Total Citation Counts Rankings
Rankings
23,211
111
9
Ranking Based On Selection: 5
Olavi Pelkonen
University of Oulu
Oulu, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,842
4,902
0.164
Pharmacology
Toxicology
* Total Citation Counts Rankings
Rankings
40,197
1,741
39
Ranking Based On Selection: 6
Alexander Pfeifer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,481
5,568
0.272
metabolism
pharmacology
energy expenditure
obesity
* Total Citation Counts Rankings
Rankings
43,915
19,212
49
Ranking Based On Selection: 7
Ruiwen Zhang
University of Houston
Houston, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,171
5,186
0.271
cancer
pharmacology
pharmaceutical sciences
* Total Citation Counts Rankings
Rankings
44,139
1,922
2
Ranking Based On Selection: 8
J Thomas Sanderson
INRS-Institut Armand-Frappier
Québec, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,108
7,010
0.367
Toxicology
physiologically relevant cell bioassays
pesticides
natural compounds
endocrine disruption/cancers
* Total Citation Counts Rankings
Rankings
46,436
1,801
52
Ranking Based On Selection: 9
Emanuela Masini
Università degli Studi di Firenze
Firenze, Italy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,416
3,612
0.196
Histaminergic receptors
Glaucoma
CA IX Inhibitors
inflammation
nitric oxide
* Total Citation Counts Rankings
Rankings
47,934
2,068
16
Ranking Based On Selection: 10
Wolfram Hubertus Zimmermann
Georg-August-Universität Göttingen
Göttingen, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,003
7,577
0.421
tissue engineering
stem cells
genome editing
heart failure
translation
* Total Citation Counts Rankings
Rankings
48,065
20,858
18
Ranking Based On Selection: 11
David W Hein
University of Louisville
Louisville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,965
2,334
0.130
precision medicine
precision environmental health
* Total Citation Counts Rankings
Rankings
54,681
512
143
Ranking Based On Selection: 12
Jens Lykkesfeldt
University of Copenhagen
Copenhagen, Denmark
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,322
7,426
0.455
Experimental pharmacology and toxicology
Oxidative stress in health and disease
NAFLD
Vitamin C
* Total Citation Counts Rankings
Rankings
62,882
26,532
28
Ranking Based On Selection: 13
Fusao Hirata
Wayne State University
Detroit, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,676
471
0.032
annexin A1
inflammation
cancer
mutagenesis
* Total Citation Counts Rankings
Rankings
63,172
26,634
24
Ranking Based On Selection: 14
Nirmala Parajuli
University of Arkansas for Medical Sciences
Little Rock, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,623
5,932
0.406
* Total Citation Counts Rankings
Rankings
63,520
26,774
183
Ranking Based On Selection: 15
John W Regan
University of Arizona
Tucson, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,558
1,204
0.083
G-protein coupled receptors
prostanoid receptors
* Total Citation Counts Rankings
Rankings
66,401
2,924
37
Ranking Based On Selection: 16
Horst Spielmann
Freie Universität Berlin
Berlin, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,088
1,960
0.139
Toxicology
Pharmacology
Life Sciences
* Total Citation Counts Rankings
Rankings
72,142
3,190
400
Ranking Based On Selection: 17
Allan Okey
University of Toronto
Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,197
1,030
0.078
toxicology
drug metabolism
* Total Citation Counts Rankings
Rankings
79,608
32,615
217
Ranking Based On Selection: 18
William Crowley
University of Utah
Salt Lake City, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,181
736
0.060
* Total Citation Counts Rankings
Rankings
87,590
7,383
67
Ranking Based On Selection: 19
Christopher E Goldring
University of Liverpool
Liverpool, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,258
4,840
0.430
toxicology
pharmacology
liver
adverse drug reactions
* Total Citation Counts Rankings
Rankings
87,976
35,632
15
Ranking Based On Selection: 20
Jamie Dewitt
East Carolina University
Greenville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,215
8,916
0.795
Immunotoxicology
developmental neuroimmunotoxicology
environmental contaminants
* Total Citation Counts Rankings
Rankings
89,525
3,537
163
Ranking Based On Selection: 21
Patrizia Hrelia
Università di Bologna
Bologna, Italy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,056
3,463
0.313
pharmacology
toxicology
* Total Citation Counts Rankings
Rankings
93,343
4,081
33
Ranking Based On Selection: 22
Niels Voigt
Georg-August-Universität Göttingen
Göttingen, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,667
4,775
0.448
arrhythmias
calcium handling
atria
myocytes
atrial fibrillation
* Total Citation Counts Rankings
Rankings
96,954
4,360
519
Ranking Based On Selection: 23
John Peter Mcpherson
University of Toronto
Toronto, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,323
1,420
0.138
* Total Citation Counts Rankings
Rankings
99,519
39,622
44
Ranking Based On Selection: 24
Kangling Zhang
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,090
2,801
0.278
Epigenetics
Multi-omics
Histone modifications
* Total Citation Counts Rankings
Rankings
102,598
1,340
2
Ranking Based On Selection: 25
R Vijayaraghavan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,826
4,196
0.427
Pharmacology and Toxicology