Is Dalargin FDA approved?

Dalargin 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 Dalargin administered in research settings?

In research settings, Dalargin is typically administered via the subcutaneous or intravenous routes. 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›Dalargin vs TRH

Peptide Comparison

Dalargin vs TRH

Q: What is the difference between Dalargin and TRH?

Dalargin: Binds delta and mu opioid receptors with peripheral preference due to limited CNS penetration. 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

Both are Neuro & Cognitive peptides.

Dalargin

Leu-enkephalin-Arg

RecoveryNot EvaluatedResearch Only

No providers listed yet

Full Dalargin profile →

TRH

Thyrotropin-Releasing Hormone

CognitiveNot EvaluatedCompoundable

Half-life: ~5-6 minutes

3 providers listed

Full TRH profile →

Bottom line

TRH is carried by more providers on PeptideBase (3 vs 0); otherwise the two are closely matched on the measures we track.

Quick Verdict

Dalargin

Half-life

—

TRH

Half-life

~5-6 minutes

Which One Should You Choose?

Your goal	Better option
More provider options (0 vs 3)	TRH

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

Side-by-Side Comparison

Dalargin

TRH

Mechanism Family

Neuro & Cognitive

Half-life

—

~5-6 minutes

FDA Status

not evaluated

Admin Routes

subcutaneous, intravenous

intranasal, intravenous, subcutaneous

Availability

Research Only

Compoundable

Providers

None listed

3 listed

Avail. Notes

—

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

Dalargin

Animal · 1 key study · dated evidence base — most recent 2009

TRH

Animal · 1 key study · dated evidence base — most recent 1997

Research Citations

Dalargin

Animal2009 · Bulletin of Experimental Biology and Medicine

Gastroprotective effect of dalargin in gastropathy due to treatment with nonsteroid antiinflammatory drugs

TRH

Animal1997 · Regulatory Peptides

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

About Dalargin

Binds delta and mu opioid receptors with peripheral preference due to limited CNS penetration. Reduces gastric acid secretion, promotes mucosal blood flow, and inhibits ulcer formation via prostaglandin-mediated pathways.

Research Areas

gastroprotectionGI repairanti-ulcerpain modulation

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.

Dalargin

No established clinical contraindications. This is an investigational compound with limited human data and has not been evaluated by the FDA for safety in this context. Consult a qualified clinician.

TRH

Reported (Unverified — Pending Clinical Review)

hyperthyroidismcardiac arrhythmiashypertensionepilepsy

No established clinical contraindications

Find Providers

Where to source these peptides

Providers offering

Dalargin

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.

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Educational research tools — not medical advice.