What is the difference between Cortexin and VIP?

Cortexin: Polypeptide bioregulator from bovine cortex; modulates neurotransmitter activity; activates GABA and dopamine systems; reduces excitotoxicity; stimulates neuronal repair VIP: Pleiotropic neuropeptide binding VPAC1/VPAC2 receptors; suppresses neuroinflammation, regulates circadian rhythm via SCN, modulates immune response

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.

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

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 VIP administered in research settings?

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

Home›Research›Compare›Cortexin vs VIP

Peptide Comparison

Cortexin vs VIP

Both are Neuro & Cognitive peptides.

Cortexin

Cortexin-10

CognitiveNot EvaluatedResearch Only

Half-life: Unknown

4 providers listed

Full Cortexin profile →

VIP

Vasoactive Intestinal Peptide

CognitiveNot EvaluatedResearch Only

Half-life: ~1-2 minutes (plasma)

23 providers listed

Full VIP profile →

Bottom line

VIP carries stronger published evidence (RCT, 16 key studies) than Cortexin (Review, 1); both are research compounds.

Quick Verdict

Cortexin

Half-life

Unknown

VIP

Half-life

~1-2 minutes (plasma)

Which One Should You Choose?

Your goal	Better option
Stronger clinical evidence	VIP
More provider options (4 vs 23)	VIP

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

Side-by-Side Comparison

Cortexin

VIP

Mechanism Family

Neuro & Cognitive

Half-life

Unknown

~1-2 minutes (plasma)

FDA Status

not evaluated

Admin Routes

intramuscular

intranasal, intravenous

Availability

Research Only

Providers

4 listed

23 listed

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.

Endogenous 28-aa neuropeptide. No FDA-approved product. Inhaled VIP studied in Phase 2 for pulmonary arterial hypertension (Santhera); program not advanced. No NDA filed. Research use only.

Research Evidence

Cortexin

Review · 1 key study · dated evidence base — most recent 2013

VIP

RCT · 16 key studies · most recent 2025

Research Citations

Cortexin

Review2013 · Advances in gerontology

Neuroprotective effects of peptides bioregulators in people of various age

VIP

RCT2022 · Crit Care Med

The Use of IV Vasoactive Intestinal Peptide (Aviptadil) in Patients With Critical COVID-19 Respiratory Failur…

RCT2020 · Cephalalgia

The effect of pituitary adenylate cyclase-activating peptide-38 and vasoactive intestinal peptide in cluster…

RCT1990 · J Urol

A clinical trial of intracavernous vasoactive intestinal peptide to induce penile erection.

Case series2024 · J Indian Assoc Pediatr Surg

Vasoactive Intestinal Polypeptide Secreting MS Neuroblastoma.

+12 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 VIP

Pleiotropic neuropeptide binding VPAC1/VPAC2 receptors; suppresses neuroinflammation, regulates circadian rhythm via SCN, modulates immune response

Research Areas

neuroprotectionanti-inflammatory (CNS)CIRS treatmentcircadian rhythm regulation

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

VIP

Reported (Unverified — Pending Clinical Review)

low blood pressurevasoactive drug interactions

No established clinical contraindications

Find Providers

Where to source these peptides

Providers offering

Cortexin

4 listed

Browse directory →

Providers offering

VIP

23 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

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Educational research tools — not medical advice.