What is the difference between Cortexin and Vasopressin?

Cortexin: Polypeptide bioregulator from bovine cortex; modulates neurotransmitter activity; activates GABA and dopamine systems; reduces excitotoxicity; stimulates neuronal repair Vasopressin: Neuropeptide binding V1aR (social behavior/memory, vasoconstriction), V1bR (ACTH/stress), V2R (antidiuretic); enhances hippocampal memory consolidation and social recognition

Is Cortexin FDA approved?

Cortexin is not evaluated or approved by the FDA. It is discussed for research and educational purposes only, not as medical guidance.

Is Vasopressin FDA approved?

Vasopressin is FDA approved (FDA status current as of 2014-04-17). This regulatory status is provided for research and educational context only.

How is Cortexin administered in research settings?

In research settings, Cortexin is typically administered via the intramuscular route. PeptideBase does not provide dosing or administration instructions.

How is Vasopressin administered in research settings?

In research settings, Vasopressin is typically administered via the intranasal, subcutaneous, or intravenous routes. PeptideBase does not provide dosing or administration instructions.

Home›Research›Compare›Cortexin vs Vasopressin

Peptide Comparison

Cortexin vs Vasopressin

Both are Neuro & Cognitive peptides.

Cortexin

Cortexin-10

CognitiveNot EvaluatedResearch Only

Half-life: Unknown

4 providers listed

Full Cortexin profile →

Vasopressin

ADH

CognitiveFDA ApprovedPrescription

Half-life: 10-20 minutes

4 providers listed

Full Vasopressin profile →

Bottom line

Vasopressin is FDA-approved, while Cortexin is not evaluated — the clearest structural difference between them.

Quick Verdict

Cortexin

Evidence

Emerging Clinical

Half-life

Unknown

Vasopressin

Evidence

Established Clinical

Half-life

10-20 minutes

Which One Should You Choose?

Your goal	Better option
Stronger clinical evidence	Vasopressin
Further along in FDA review	Vasopressin

Research summary only — not medical advice. Consult a qualified provider before making any decisions.

Side-by-Side Comparison

Cortexin

Vasopressin

Mechanism Family

Neuro & Cognitive

Half-life

Unknown

10-20 minutes

FDA Status

not evaluated

approved

Admin Routes

intramuscular

intranasal, subcutaneous, intravenous

Availability

Research Only

Prescription

Providers

4 listed

FDA Update

—

Apr 2014

Avail. Notes

Russian polypeptide preparation from cattle cerebral cortex. Registered in Russia for neurological conditions. No FDA approval, no NDA or IND, not on any FDA list. Research chemical in US.

FDA-approved vasopressin injection. Brand: Vasostrict (NDA 204485, Apr 2014). Indicated for vasodilatory shock. As an FDA-approved drug with a USP monograph, it is compounded via the approved-drug / monograph route rather than the 503A bulk-substances list. Prescription only.

Research Evidence

Cortexin

Emerging ClinicalRCT · 2 key studies · most recent 2019

Vasopressin

Established ClinicalMeta-analysis · 13 key studies · most recent 2026

Research Citations

Cortexin

RCT2019 · Zhurnal nevrologii i psikhiatrii imeni S.S. Korsakova

Evaluation of the efficacy and safety of cortexin in the complex rehabilitation of verticalization in patient…

Review2013 · Advances in gerontology

Neuroprotective effects of peptides bioregulators in people of various age

Vasopressin

Meta-analysis2026 · Front Endocrinol (Lausanne)

The hypothalamic-neurohypophyseal system in preeclampsia: a systematic review with a subgroup meta-analysis o…

Meta-analysis2026 · Front Endocrinol (Lausanne)

The hypothalamic-neurohypophyseal system in preeclampsia: a systematic review with a subgroup meta-analysis o…

Cohort2026 · Sci Rep

Effects of septic shock vasopressors on the fitness of Escherichia coli.

Cohort2026 · Prog Neurobiol

Tracing the impact of electrophysiological studies of magnocellular neurons.

+9 more

About Cortexin

Polypeptide bioregulator from bovine cortex; modulates neurotransmitter activity; activates GABA and dopamine systems; reduces excitotoxicity; stimulates neuronal repair

Research Areas

neuroprotection and neuronal survival supportcognitive function improvement — documented in Russian clinical settingsantioxidant activity in CNS tissueEEG normalization and neurotrophic factor expression

About Vasopressin

Neuropeptide binding V1aR (social behavior/memory, vasoconstriction), V1bR (ACTH/stress), V2R (antidiuretic); enhances hippocampal memory consolidation and social recognition

Research Areas

memory consolidationsocial memoryfluid retentionvasoconstriction

Safety Profile

Information below reflects published research data only — not medical advice. Consult a qualified provider before use.

Cortexin

Reported (Unverified — Pending Clinical Review)

bovine protein allergy

No established clinical contraindications

Vasopressin

Reported (Unverified — Pending Clinical Review)

hypertensioncoronary artery diseasehyponatremia riskheart failure

No established clinical contraindications

Suggested Monitoring

Under clinical review

Being verified by our medical team before we display monitoring guidance for this peptide.

Find Providers

Where to source these peptides

Providers offering

Cortexin

4 listed

Browse directory →

Providers offering

Vasopressin

4 listed

Browse directory →

PeptideBase lists providers for educational research purposes only. Always consult a qualified healthcare professional before obtaining or using any peptide.

More Neuro & Cognitive Comparisons

Browse all peptides →

Educational research tools — not medical advice.