What is the difference between Cortexin and TRH?

Cortexin: Polypeptide bioregulator from bovine cortex; modulates neurotransmitter activity; activates GABA and dopamine systems; reduces excitotoxicity; stimulates neuronal repair TRH: Hypothalamic tripeptide (pGlu-His-Pro-NH2); binds TRH-R1/R2; stimulates TSH/prolactin release; direct CNS effects independent of thyroid axis including synaptic potentiation

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.

TRH 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 TRH administered in research settings?

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

Home›Research›Compare›Cortexin vs TRH

Peptide Comparison

Cortexin vs TRH

Both are Neuro & Cognitive peptides.

Cortexin

Cortexin-10

CognitiveNot EvaluatedResearch Only

Half-life: Unknown

4 providers listed

Full Cortexin profile →

TRH

Thyrotropin-Releasing Hormone

CognitiveNot EvaluatedCompoundable

Half-life: ~5-6 minutes

3 providers listed

Full TRH profile →

Bottom line

Cortexin is carried by more providers on PeptideBase (4 vs 3); otherwise the two are closely matched on the measures we track.

Quick Verdict

Cortexin

Evidence

Emerging Clinical

Half-life

Unknown

TRH

Evidence

Emerging Clinical

Half-life

~5-6 minutes

Which One Should You Choose?

Your goal	Better option
More provider options (4 vs 3)	Cortexin

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

Side-by-Side Comparison

Cortexin

TRH

Mechanism Family

Neuro & Cognitive

Half-life

Unknown

~5-6 minutes

FDA Status

not evaluated

Admin Routes

intramuscular

intranasal, intravenous, subcutaneous

Availability

Research Only

Compoundable

Providers

4 listed

3 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.

Was FDA-approved as Thypinone (NDA 017812) and Relefact TRH for diagnostic TSH testing. Both products voluntarily discontinued. Nominated on the FDA 503B outsourcing-facility list (Category 3 — nominated without adequate support to date); not on the 503A pharmacy bulk-substances list. Prescription.

Research Evidence

Cortexin

Emerging ClinicalRCT · 2 key studies · most recent 2019

TRH

Emerging ClinicalRCT · 2 key studies · dated evidence base — most recent 1997

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

TRH

Animal1997 · Regulatory Peptides

Thyrotropin releasing hormone prevents abnormalities of cortical acetylcholine and monoamines in mice followi…

RCT1990 · Psychopharmacology

TRH attenuates scopolamine-induced memory impairment in humans

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 TRH

Hypothalamic tripeptide (pGlu-His-Pro-NH2); binds TRH-R1/R2; stimulates TSH/prolactin release; direct CNS effects independent of thyroid axis including synaptic potentiation

Research Areas

cognitive enhancementneuroprotectionantidepressantarousal/wakefulness

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

TRH

Reported (Unverified — Pending Clinical Review)

hyperthyroidismcardiac arrhythmiashypertensionepilepsy

No established clinical contraindications

Find Providers

Where to source these peptides

Providers offering

Cortexin

4 listed

Browse directory →

Providers offering

TRH

3 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.