What is the difference between Desmopressin and Selank?

Desmopressin: Synthetic vasopressin analogue (V2R selective); crosses blood-brain barrier; enhances hippocampal LTP and memory consolidation; longer-acting than natural vasopressin Selank: Selank is believed to modulate the expression of GABA-A receptor subunits and increase BDNF levels, contributing to its anxiolytic and neuroprotective profile.

Is Desmopressin FDA approved?

Desmopressin is FDA approved (FDA status current as of 1978-01-01). This regulatory status is provided for research and educational context only.

How is Desmopressin administered in research settings?

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

How is Selank administered in research settings?

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

Home›Research›Compare›Desmopressin vs Selank

Peptide Comparison

Desmopressin vs Selank

Name: Desmopressin vs Selank — Per-mg Price Comparison
Creator: PeptideBase
License: https://peptidebase.io/terms

Both are Neuro & Cognitive peptides.

Desmopressin

DDAVP

CognitiveFDA ApprovedPrescription

Half-life: 1.5-2.5 hours (intranasal)

2 providers listed

Full Desmopressin profile →

Selank

TP-7

CognitiveResearch Only

Half-life: 60 minutes

163 providers listed

Full Selank profile →

Bottom line

Desmopressin is FDA-approved, while Selank is nomination withdrawn — the clearest structural difference between them.

Quick Verdict

Desmopressin

Evidence

Clinical

Half-life

1.5-2.5 hours (intranasal)

Selank

Evidence

Emerging Clinical

Half-life

60 minutes

Which One Should You Choose?

Your goal	Better option
Stronger clinical evidence	Desmopressin
Further along in FDA review	Desmopressin
Less frequent dosing (longer half-life)	Desmopressin
Oral administration option	Desmopressin
More provider options (2 vs 163)	Selank

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

Side-by-Side Comparison

Desmopressin

Selank

Mechanism Family

Neuro & Cognitive

Half-life

1.5-2.5 hours (intranasal)

60 minutes

FDA Status

approved

nomination withdrawn

Admin Routes

intranasal, oral, subcutaneous

intranasal, subcutaneous

Availability

Prescription

Research Only

Providers

2 listed

163 listed

FDA Update

Jan 1978

—

Avail. Notes

FDA-approved synthetic vasopressin analog. Brands: DDAVP (NDA 017922), Stimate, Nocdurna (NDA 201532, Jun 2018). Approved forms: injection, intranasal, oral, sublingual. Prescription only.

Russian anxiolytic heptapeptide. Approved pharmaceutical nasal spray in Russia. Not FDA-approved. Not on FDA 503A Category 1 bulks list. Unscheduled in US. Sold as research chemical.

Research Evidence

Desmopressin

ClinicalRCT · 7 key studies · most recent 2026

Selank

Emerging ClinicalRCT · 2 key studies · dated evidence base — most recent 2015

Research Citations

Desmopressin

Cohort2026 · BMC Nephrol

Proactive desmopressin for the prevention of serum sodium overcorrection in moderate-to-severe hyponatremia:…

Cohort2026 · Clinical Endocrinology

Clinical Outcomes Following Supply-Driven Transition From Intranasal to Oral Desmopressin in AVP-Deficiency

Cohort2026 · Int J Urol

Nationwide Trends in Desmopressin Prescribing for Nocturnal Polyuria in Japan: A Population-Based Analysis (2…

Cohort2026 · J Pediatr Hematol Oncol

Bleeding Phenotypes in Inherited Platelet Function Disorders: Insights From the ATHNdataset.

+3 more

Selank

RCT2015 · Zhurnal nevrologii i psikhiatrii imeni S.S. Korsakova

Optimization of the treatment of anxiety disorders with selank

RCT2008 · Zhurnal nevrologii i psikhiatrii imeni S.S. Korsakova

Efficacy and possible mechanisms of action of a new peptide anxiolytic selank in the therapy of generalized a…

About Desmopressin

Synthetic vasopressin analogue (V2R selective); crosses blood-brain barrier; enhances hippocampal LTP and memory consolidation; longer-acting than natural vasopressin

Research Areas

memory consolidationlearning enhancementantidiuretichemostasis

About Selank

Selank is believed to modulate the expression of GABA-A receptor subunits and increase BDNF levels, contributing to its anxiolytic and neuroprotective profile. It appears to regulate serotonin transporter gene expression and influence dopaminergic signalling. Unlike classical anxiolytics, it does not appear to produce tolerance or physical dependence in animal models.

Research Areas

anxiolytic effect via GABAergic and serotonergic modulationBDNF upregulation supporting neuroprotection and cognitive resiliencestress response attenuation — performance under anxious conditionsimmune modulation via tuftsin analog mechanism

Safety Profile

Information below reflects published research data only — not medical advice. Consult a qualified provider before use.

Desmopressin

Reported (Unverified — Pending Clinical Review)

hyponatremiaheart failureuncontrolled hypertensionpsychogenic polydipsia

No established clinical contraindications

Suggested Monitoring

Under clinical review

Being verified by our medical team before we display monitoring guidance for this peptide.

Selank

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.

Used Together?

Selank

Semax
Research suggests Semax and Selank may produce complementary cognitive and stress-modulating effects when combined. Semax is studied for BDNF upregulation and cognitive enhancement, while Selank is studied for anxiolytic and immune-regulatory activity — distinct mechanisms with potential overlap in neuroprotective signaling.

Price (per mg)

Desmopressin

Not enough vendor pricing yet.

Selank

$4.44/mg

$3.00 – $6.00 range

24 vendors

View price index →Find providers →

Find Providers

Where to source these peptides

Providers offering

Desmopressin

2 listed

Browse directory →

Providers offering

Selank

163 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.

Cite this page

Data last updated July 22, 2026

Free to reference and republish with attribution to PeptideBase. Choose a format:

PeptideBase. (2026). Desmopressin vs Selank — Per-mg Price Comparison. Retrieved July 23, 2026, from https://peptidebase.io/peptides/compare/desmopressin/selank

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