What is the difference between Chonluten and P21?

Chonluten: A short synthetic peptide bioregulator (Glu-Asp-Gly) from the Khavinson family, marketed for bronchial/lung epithelium support. Evidence is largely Russian-language and preclinical.... P21: P21 (also P021) is a small peptidergic compound — the tetrapeptide core Asp-Gly-Gly-Leu with an N-terminal acetyl and a C-terminal adamantylated glycine amide (Ac-DGGL(A)G-NH2) — derived from an activ...

Chonluten vs P21

Q: Can you stack Chonluten and P21?

Chonluten (immune) and P21 (cognitive) are in different categories and are sometimes researched together in combined protocols. Consult a licensed provider before combining any compounds.

Head-to-head comparison of Chonluten and P21 — mechanism, side effects, legal status, and pricing.

Chonluten

A short synthetic peptide bioregulator (Glu-Asp-Gly) from the Khavinson family, marketed for bronchial/lung epithelium support. Evidence is largely Russian-language and preclinical.

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P21

P21 (also P021) is a small peptidergic compound — the tetrapeptide core Asp-Gly-Gly-Leu with an N-terminal acetyl and a C-terminal adamantylated glycine amide (Ac-DGGL(A)G-NH2) — derived from an active region (residues ~148–151) of human ciliary neurotrophic factor (CNTF). It was designed and characterized in the Khalid Iqbal laboratory at the New York State Institute for Basic Research in Developmental Disabilities (NYS IBR). It is an experimental, preclinical compound — NOT FDA-approved and NOT tested in humans in published trials. Distinct from the cyclin-dependent kinase inhibitor protein p21/CDKN1A/WAF1 (a completely different gene product; the two share only the name).

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Chonluten

P21

Where Researchers Are Buying

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COA-verified vendors · trust score ≥70 required · single-vial price — bulk/bundle deals may be lower

Chonluten

Best $/mg

$3.50/mg

BioLongevity LabsC

1 trusted vendor listing

Compare all 1 vendor

P21

Best $/mg

$7.14/mg

Verified PeptidesC

2 trusted vendors listing

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Lab Verification

COA corpus from Disclosed Labs — independently tested batches only.

Chonluten

COAs

99.6%

Avg purity

Labs

Full testing data

P21

COAs

99.1%

Avg purity

Labs

Full testing data

Chonluten Research Summary

Primarily Russian institutional studies; no large independent controlled human trials.

P21 Research Summary

Evidence is preclinical (rodent) only. Key publication: Kazim, Blanchard, Dai, Tung, LaFerla, Iqbal & Iqbal, Neurobiology of Disease 2014 (PMID 25046994) reported that chronic oral P021 rescued cognition, boosted dentate-gyrus neurogenesis, and reduced tau hyperphosphorylation in 3xTg-AD mice. Additional preclinical papers from the Iqbal group (and collaborators) have shown dendritic/synaptic rescue in AD and aging rodent models (e.g., Kazim et al., Alzheimer's Res Ther 2017). No Phase 1/2/3 human trials have been published; no human safety or pharmacokinetic data exist. Grey-market vendor material is unvalidated — purity, identity, and dosing are not verifiable.

Key references

Disease-modifying effect of chronic oral treatment with a neurotrophic peptidergic compound (P021) in a triple-transgenic mouse model of Alzheimer's disease (Kazim et al., Neurobiol Dis 2014) (2014)

Can you stack Chonluten and P21?

Chonluten (Immune) and P21 (Cognitive) are in different categories and target different biological pathways. This is a common pattern in multi-compound research protocols. Researchers should monitor the biomarkers from both profiles and watch for interactions listed in each compound’s contraindications. Consult a licensed healthcare provider before combining any research compounds.

Other comparisons

P21 vs Selank Chonluten vs Selank P21 vs Semax Chonluten vs Semax Dihexa vs P21 Chonluten vs Dihexa P21 vs PE-22-28 Chonluten vs PE-22-28

This platform provides informational tools only, not medical advice. This comparison is for educational purposes only. Consult a licensed provider.