Side-by-Side Comparison · 2026

CGRP vs TLQP-21

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

CGRP
Neuropeptide

Calcitonin gene-related peptide (CGRP) is a 37-amino acid neuropeptide produced by alternative splicing of the calcitonin gene in neurons. It is the most abundant neuropeptide in the sensory nervous system, expressed in trigeminal ganglion neurons and released from perivascular n...

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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 CGRP TLQP-21
Category Neuropeptide Neuropeptide
Research FDA Approved (Anti-CGRP antibodies) Research
Half-Life ~7-10 min (plasma; native) Unknown
Typical Dose Anti-CGRP mAbs: 70-240 mg SC monthly or quarterly 1-100 nmol (animal)
Frequency Monthly or quarterly (approved antibodies) Variable
Route Endogenous; IV/SC (research) Intrathecal, Subcutaneous, Intracerebroventricular
FDA Status Anti-CGRP antibodies approved (erenumab, fremanezumab, galcanezumab, eptinezumab) Not approved

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Frequently Asked Questions
What is the difference between CGRP and TLQP-21?
CGRP: Calcitonin gene-related peptide (CGRP) is a 37-amino acid neuropeptide produced by alternative splicing of the calcitonin gene in neurons. It is the most abundant neuropeptide in the sensory nervous s... 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, CGRP or TLQP-21?
CGRP half-life: ~7-10 min (plasma; native). TLQP-21 half-life: Unknown.
Can you stack CGRP and TLQP-21?
CGRP 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.