Side-by-Side Comparison · 2026

Neuropeptide S vs TLQP-21

Neuropeptide S vs TLQP-21 — mechanism, half-life, dosing, and research status compared. Which is right for your protocol?

Neuropeptide S
Neuropeptide

Neuropeptide S (NPS) is a 20-amino acid peptide discovered in 2004 that acts on the NPS receptor (NPSR1), a Gq/Gs-coupled GPCR with highest expression in amygdala, hypothalamus, and brainstem arousal centers. NPS produces a distinctive combination of simultaneous wakefulness prom...

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TLQP-21
Neuropeptide

TLQP-21 is a 21-amino acid peptide derived from the C-terminal region of VGF (Nerve Growth Factor-Inducible), a large precursor neuropeptide that is proteolytically cleaved into multiple bioactive fragments. VGF is strongly induced by NGF and BDNF and plays roles in energy homeos...

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Key Parameters
Parameter Neuropeptide S TLQP-21
Category Neuropeptide Neuropeptide
Research Preclinical Research
Half-Life Short (minutes, CNS) Unknown
Typical Dose 0.1-10 nmol (ICV, animal) 1-100 nmol (animal)
Frequency Variable Variable
Route Intracerebroventricular (animal research) Intrathecal, Subcutaneous, Intracerebroventricular
FDA Status Not approved Not approved

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Frequently Asked Questions
What is the difference between Neuropeptide S and TLQP-21?
Neuropeptide S: Neuropeptide S (NPS) is a 20-amino acid peptide discovered in 2004 that acts on the NPS receptor (NPSR1), a Gq/Gs-coupled GPCR with highest expression in amygdala, hypothalamus, and brainstem arousal ... TLQP-21: TLQP-21 is a 21-amino acid peptide derived from the C-terminal region of VGF (Nerve Growth Factor-Inducible), a large precursor neuropeptide that is proteolytically cleaved into multiple bioactive fra...
Which has a longer half-life, Neuropeptide S or TLQP-21?
Neuropeptide S half-life: Short (minutes, CNS). TLQP-21 half-life: Unknown.
Can you stack Neuropeptide S and TLQP-21?
Neuropeptide S and TLQP-21 are in the same category and used together in research protocols. Always consult relevant literature and follow appropriate guidelines.

For research use only. Not medical advice. ASCEND does not conduct or endorse any specific research protocol. Always consult relevant scientific literature and regulatory guidelines.