BiomedicalPublications

International Journal of Tryptophan Research

SAGE Publishing·United States·ISSN 1178-6469

Open accessNeuroscience

International Journal of Tryptophan Research is published by SAGE Publishing as an open access journal (ISSN 1178-6469). The list article processing charge is $4,400. Its OpenAlex h-index is 42. Primary field: Neuroscience. Figures on this page are sourced from OpenAlex and DOAJ and should be confirmed on the journal’s own site before submission.

Cost to publish

$4,400

Open-access article processing charge, list price.

Checked · How we source APCs

Time to publication

—

Not reported to DOAJ.

h-index

42

OpenAlex citation statistic. Not a Journal Impact Factor.

2-year mean citedness

3.4

Average citations to articles from the previous two years.

What it costs to publish here

Publishing an open-access article in International Journal of Tryptophan Research is listed at $4,400. The publisher also lists 3,226 GBP. No waiver policy is recorded in our sources, which does not mean none exists. Ask.

What this journal has charged over time

List price for an open-access article in International Journal of Tryptophan Research, as recorded by OpenAlex for each year. The fee has risen 487% since 2019, from $750 to $4,400.

$0$2.2k$4.4k2019: $75020192020: $75020202021: $80020212022: $75020222023: $75020232025: $4,4002025

Publishers change list prices without notice and often apply discounts, institutional agreements or waivers. Treat this as the trend, and confirm the current figure with the journal.

Peer review and licensing

Review modelNot reported
LicenceNot reported
Author keeps copyrightNot reported
Plagiarism screeningNot reported
Editorial boardNot linked in DOAJ
LanguagesNot reported

Verification checks

3 of 8 confirmed

These are facts we could verify in public records, not a verdict. A journal missing a check is not necessarily disreputable — many long-established subscription journals sit outside the open-access registries entirely. Use them as questions to ask, and confirm anything that matters directly with the journal before you submit.

  • Listed in the Directory of Open Access JournalsNot listed. Many legitimate subscription journals are not in DOAJ, so this alone means little.
  • Included in OpenAlex's curated core setOpenAlex flags well-established venues that appear across major indexes.
  • Peer review model publicly declaredNo declared model found in DOAJ.
  • Publication charges stated up frontA journal that will not tell you the fee before submission is worth a second look.
  • Screens submissions for plagiarismReported to DOAJ by the journal.
  • Participates in a digital preservation schemeArchiving means the record survives if the publisher does not.
  • Assigns persistent identifiers (DOIs)Standard practice; its absence is unusual.
  • Still actively publishingMost recent indexed article: 2026.

Scope

The subjects International Journal of Tryptophan Research publishes most, derived from the topics assigned to its indexed articles.

Tryptophan and brain disordersStress Responses and CortisolGut microbiota and healthBipolar Disorder and TreatmentDiet and metabolism studiesCircadian rhythm and melatoninNeurotransmitter Receptor Influence on BehaviorNeuroinflammation and Neurodegeneration MechanismsNeuroendocrine regulation and behaviorSirtuins and Resveratrol in Medicine

Publication record

Indexed articles214
Total citations9,070
i10-index136
Most recent indexed article2026
All ISSNs1178-6469

Counts reflect what OpenAlex has indexed and will differ from the publisher's own figures. We do not show a founding year: OpenAlex's first-publication dates are distorted by mis-dated records — it puts PLoS ONE in 1806 — and we would rather omit a number than print one we cannot stand behind.