Citation Rankings
Highly Cited Researchers

Lead City University Ibadan Highly Cited Researchers CitationMedical and Health Sciences / Pharmacology 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
Nigeria
Zacchaeus F. Olofin
Clinical Pharmacology
Clinical Trials
Chemotherapy
Pharmacoepidemiology
Pharmacokinetics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,779
3,619
0.958
* Total Citation Counts Rankings
Ranking Based On Selection :2
Nigeria
Opeyemi Tosin Joseph
Pharmacology
Toxicology
Ethnopharmacology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
738
735
0.996
* Total Citation Counts Rankings
Rankings
267,015
Nigeria
435
2
Ranking Based On Selection: 1
Zacchaeus F. Olofin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,779
3,619
0.958
Clinical Pharmacology
Clinical Trials
Chemotherapy
Pharmacoepidemiology
Pharmacokinetics
* Total Citation Counts Rankings
Rankings
790,921
Nigeria
4,013
14
Ranking Based On Selection: 2
Opeyemi Tosin Joseph
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
738
735
0.996