Cyprian O. Onyeji

1.0k total citations
59 papers, 745 citations indexed

About

Cyprian O. Onyeji is a scholar working on Pharmacology, Pharmacology and Infectious Diseases. According to data from OpenAlex, Cyprian O. Onyeji has authored 59 papers receiving a total of 745 indexed citations (citations by other indexed papers that have themselves been cited), including 22 papers in Pharmacology, 17 papers in Pharmacology and 14 papers in Infectious Diseases. Recurrent topics in Cyprian O. Onyeji's work include Antibiotics Pharmacokinetics and Efficacy (20 papers), Pharmacogenetics and Drug Metabolism (11 papers) and Analytical Methods in Pharmaceuticals (11 papers). Cyprian O. Onyeji is often cited by papers focused on Antibiotics Pharmacokinetics and Efficacy (20 papers), Pharmacogenetics and Drug Metabolism (11 papers) and Analytical Methods in Pharmaceuticals (11 papers). Cyprian O. Onyeji collaborates with scholars based in Nigeria, United States and Russia. Cyprian O. Onyeji's co-authors include David P. Nicolau, C H Nightingale, Festus A. Ogunbona, Julius O. Soyinka, Richard Quintiliani, Oluseye O. Bolaji, Markos Marangos, Pamela R. Tessier, Charles H. Nightingale and James M. Cook and has published in prestigious journals such as The Journal of Infectious Diseases, Antimicrobial Agents and Chemotherapy and International Journal of Pharmaceutics.

In The Last Decade

Cyprian O. Onyeji

55 papers receiving 699 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Cyprian O. Onyeji Nigeria 17 218 157 140 135 118 59 745
Marie T. Borin United States 17 302 1.4× 202 1.3× 208 1.5× 130 1.0× 69 0.6× 43 775
Lee B. Barradell 18 323 1.5× 257 1.6× 181 1.3× 155 1.1× 129 1.1× 24 1.3k
Klaus Borner Germany 16 392 1.8× 222 1.4× 123 0.9× 121 0.9× 109 0.9× 33 1.1k
José Ramón Azanza Perea Spain 18 281 1.3× 277 1.8× 276 2.0× 84 0.6× 62 0.5× 108 1.2k
Thomas Mercier Switzerland 17 184 0.8× 108 0.7× 130 0.9× 42 0.3× 187 1.6× 33 685
Britt Jansson Sweden 14 320 1.5× 192 1.2× 80 0.6× 305 2.3× 46 0.4× 18 804
Peggy Gandia France 16 404 1.9× 293 1.9× 143 1.0× 152 1.1× 76 0.6× 75 1.0k
Allan H. Price United Kingdom 7 360 1.7× 160 1.0× 76 0.5× 175 1.3× 47 0.4× 9 1.0k
Yi Zheng China 14 271 1.2× 154 1.0× 91 0.7× 62 0.5× 84 0.7× 65 630
M. A. Campanero Spain 21 225 1.0× 147 0.9× 78 0.6× 58 0.4× 45 0.4× 41 1.2k

Countries citing papers authored by Cyprian O. Onyeji

Since Specialization
Citations

This map shows the geographic impact of Cyprian O. Onyeji's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Cyprian O. Onyeji with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Cyprian O. Onyeji more than expected).

Fields of papers citing papers by Cyprian O. Onyeji

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Cyprian O. Onyeji. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Cyprian O. Onyeji. The network helps show where Cyprian O. Onyeji may publish in the future.

Co-authorship network of co-authors of Cyprian O. Onyeji

This figure shows the co-authorship network connecting the top 25 collaborators of Cyprian O. Onyeji. A scholar is included among the top collaborators of Cyprian O. Onyeji based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Cyprian O. Onyeji. Cyprian O. Onyeji is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Soyinka, Julius O., et al.. (2022). Appraisal of antiretroviral herbal medicines with proven efficacy: modulation of drug-metabolizing enzymes and permeability glycoprotein activities. Journal of Herbmed Pharmacology. 11(4). 461–474. 1 indexed citations
2.
Onyeji, Cyprian O.. (2018). Nanoparticles: Key to Optimization of Drug Therapy. 3(1). 1 indexed citations
3.
Onyeji, Cyprian O., et al.. (2017). Insight into clinically effective herbal antimalarial products: Effects on drug metabolizing enzymes and p-glycoprotein. African Journal of Pharmacy and Pharmacology. 11(48). 591–613. 7 indexed citations
4.
Onyeji, Cyprian O., et al.. (2015). EFFECTS OF CO-TRIMOXAZOLE CO-ADMINISTRATION ON THE PHARMACOKINETICS OF AMODIAQUINE IN HEALTHY VOLUNTEERS. International Journal of Pharmacy and Pharmaceutical Sciences. 7(9). 272–276. 3 indexed citations
5.
Soyinka, Julius O. & Cyprian O. Onyeji. (2009). Alteration of pharmacokinetics of proguanil in healthy volunteers following concurrent administration of efavirenz. European Journal of Pharmaceutical Sciences. 39(4). 213–218. 18 indexed citations
6.
Onyeji, Cyprian O.. (2008). Pharmacokinetic Interaction Between Ritonavir and Quinine. 46th Annual Meeting. 1 indexed citations
7.
Daniyan, Michael Oluwatoyin, et al.. (2008). Pharmacokinetic changes of halofantrine in experimentally-induced diabetes mellitus following oral drug administration. AFRICAN JOURNAL OF BIOTECHNOLOGY. 7(9). 1226–1234. 2 indexed citations
8.
Soyinka, Julius O., et al.. (2008). Simultaneous liquid chromatographic analysis of ritonavir, quinine and 3-hydroxyquinine in human plasma. Journal of Chromatography B. 877(4). 441–445. 11 indexed citations
9.
Onyeji, Cyprian O., et al.. (2006). Preparation and in vitro evaluation of suppositories of halofantrine hydrochloride. AFRICAN JOURNAL OF BIOTECHNOLOGY. 5(19). 6 indexed citations
10.
Onyeji, Cyprian O., et al.. (2004). Effects of tetracycline on the pharmacokinetics of halofantrine in healthy volunteers. British Journal of Clinical Pharmacology. 58(1). 52–55. 8 indexed citations
11.
Bolaji, Oluseye O., et al.. (2004). Evidence for increased metabolism of chloroquine during the early third trimester of human pregnancy. Tropical Medicine & International Health. 9(5). 601–605. 16 indexed citations
12.
Onyeji, Cyprian O. & Festus A. Ogunbona. (2001). Pharmacokinetic aspects of chloroquine-induced pruritus: influence of dose and evidence for varied extent of metabolism of the drug. European Journal of Pharmaceutical Sciences. 13(2). 195–201. 17 indexed citations
13.
Nicolau, David P., Cyprian O. Onyeji, Mary Anné Banevicius, Jing Li, & Charles H. Nightingale. (2001). Effects of Adjunctive Treatment with Combined Cytokines in a Neutropenic Mouse Model of Multidrug‐Resistant Enterococcus faecalis Septicemia. Pharmacotherapy The Journal of Human Pharmacology and Drug Therapy. 21(3). 275–280. 3 indexed citations
14.
Onyeji, Cyprian O., et al.. (1997). Ion-Pair Reversed-Phase High-Performance Liquid Chromatographic Analysis of Halofantrine and Desbutylhalofantrine in Human Plasma. Therapeutic Drug Monitoring. 19(6). 682–687. 6 indexed citations
15.
Bolaji, Oluseye O., Cyprian O. Onyeji, A. O. Ogundaini, T. A. Olugbade, & Festus A. Ogunbona. (1996). Pharmacokinetics and bioavailability of drotaverine in humans. European Journal of Drug Metabolism and Pharmacokinetics. 21(3). 217–221. 23 indexed citations
16.
Onyeji, Cyprian O. & SA Adesegun. (1995). Influence of viscosity on nitrofurantoin absorption from w/o/w emulsions.. Indian Journal of Pharmaceutical Sciences. 57(4). 1 indexed citations
17.
Onyeji, Cyprian O., C H Nightingale, & Markos Marangos. (1994). Enhanced killing of methicillin-resistantStaphylococcus aureus in human macrophages by liposome-entrapped vancomycin and teicoplanin. Infection. 22(5). 338–342. 57 indexed citations
18.
Onyeji, Cyprian O., et al.. (1993). Lack of Pharmacokinetic Interaction Between Chloroquine and Imipramine. Therapeutic Drug Monitoring. 15(1). 43–46. 11 indexed citations
19.
Onyeji, Cyprian O., Patrick A. F. Dixon, & Festus A. Ogunbona. (1992). An in-vitro study of chloroquine transport in the rat submaxillary gland. Journal of Pharmacy and Pharmacology. 44(2). 136–138. 2 indexed citations
20.
Onyeji, Cyprian O., et al.. (1991). Increased gastro-intestinal absorption of griseofulvin from w/o/w emulsions.. Indian Journal of Pharmaceutical Sciences. 53(6). 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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