International Journal of Peptide Research and Therapeutics: Abbreviation, Impact Factor, and Scimago Ranking

The International Journal of Peptide Research and Therapeutics is a peer-reviewed Springer journal that publishes research on peptide chemistry, peptide biology, and therapeutic applications of peptides. It launched in 2005 as the continuation of Letters in Peptide Science and covers synthesis, structure–activity relationships, delivery systems, and drug development. The journal is indexed in major citation databases, but its impact factor is moderate rather than elite, so it is best known among peptide specialists rather than the general public.

If you searched for a specific impact factor figure — say for 2017, 2019, or 2022 — the short answer is that the number changes every year in the Journal Citation Reports, and only Clarivate publishes the official value. The sections below explain what the journal covers, how to cite it, and where to verify each metric.

International Journal of Peptide Research and Therapeutics at a Glance

• Publisher: Springer (part of Springer Nature)
• Print ISSN: 1573-3149
• Electronic ISSN: 1573-3904
• First published: 2005, continuing Letters in Peptide Science
• Scope: peptide synthesis, structure, function, and therapeutics
• Article types: original research, review articles, and short communications

Coverage runs from bench-level chemistry through preclinical and translational work on peptide-based drugs. The journal does not publish consumer guidance, and nothing in it should be read as advice for individual medical use.

What Is the Official Abbreviation?

The standard Springer and National Library of Medicine abbreviation is Int J Pept Res Ther. This is the form you will see in PubMed-style citations and in Springer's own reference lists.

In ISO 4 style, which many bibliographies require, the same title is written as Int. J. Pept. Res. Ther. A typical citation therefore looks like: Author A, Author B. Int J Pept Res Ther. 2021;17(3):1125–1138.

Citation managers and journal submission systems vary, so match the style your target publication requests rather than mixing forms.

Impact Factor: What It Measures and Where to Verify It

The journal impact factor is the average number of citations received in one year by articles the journal published in the two preceding years. Clarivate calculates it for titles in the Web of Science Core Collection and releases it annually through the Journal Citation Reports.

In recent JCR releases, the International Journal of Peptide Research and Therapeutics impact factor has generally landed in the low single digits, typically somewhere in the range of about 1 to 3. Exact figures for 2017, 2018, 2019, 2020, 2021, and 2022 each differ and should be pulled from the JCR itself rather than from aggregator sites.

The impact factor reflects how often the whole journal is cited. It says nothing about the quality or clinical relevance of any single paper inside it.

Two cautions are worth repeating. Some websites publish estimated or stale numbers and label them as official, and impact factors fluctuate with editorial changes and review turnaround times.

Scimago Ranking and Citation Metrics

Scimago Journal Rank is a free, Scopus-based metric that weights citations according to the prominence of the journals doing the citing. The International Journal of Peptide Research and Therapeutics scimago profile generally places the title in the middle quartiles, commonly Q2 to Q3, depending on subject category and year.

Scimago also reports annual document counts, an h-index, and quartile charts split by category such as Biochemistry, Drug Discovery, and Medicinal Chemistry. Because Scopus and Clarivate update on different schedules, the Scimago quartile and the JCR quartile for the same year rarely line up exactly.

Researchers comparing titles should look at two or three metrics together instead of relying on a single number.

Scope, Audience, and Typical Article Topics

The journal serves peptide chemists, medicinal chemists, pharmacologists, and formulation scientists. Manuscripts usually fall into one of several recurring buckets.

• Synthesis strategies, protecting groups, and solid-phase methods
• Structure–activity relationship studies on bioactive peptides
• Peptide drug delivery, stability, and half-life extension
• Antimicrobial, anticancer, and metabolic peptide candidates
• Analytical and characterization techniques for peptides
• Reviews that map a subfield of peptide research and development

Anyone searching for a specialized peptide research journal will find that this title sits alongside society journals and broader pharmacology titles rather than standing alone. Readers who want book-length overviews may also encounter collections published under current topics in peptide and protein research, which cover similar territory at greater depth.

How It Compares With Related Journals

Names in this field are easy to confuse. The international journal of peptide and protein research and the journal of peptide research belong to an older Wiley lineage that eventually fed into the Journal of Peptide Science, while the International Journal of Peptide Research and Therapeutics grew out of a different predecessor entirely.

Reading Peptide Research Critically

A peer-reviewed publication is a useful starting point, but a published paper is not proof that a peptide is safe or effective for human use. Much of the therapeutic peptide literature is preclinical, meaning it is based on cell cultures or animal models rather than controlled human trials.

Anyone weighing a peptide product marketed online should treat journal citations in advertising with skepticism, ask whether the cited study involved humans, and talk with a healthcare professional before using any unapproved compound.

For working scientists, the practical takeaway is straightforward: verify the abbreviation, pull the current impact factor and Scimago quartile from the primary sources, and read the methods section before trusting a headline. A peptide research company citing the journal in promotional material is not the same as an independent clinical endorsement.