Research-context information only. Selank is a research peptide approved in Russia as a finished pharmaceutical product for generalized anxiety disorder but not FDA-approved in the United States. Protocols, doses, and reactions reported below come from published research (mostly Russian) and self-reported community sources. This article reports what has been documented, not what should be done. Consult a licensed physician for personal medical decisions.
The buying problem mirrors semax: most users administer selank intranasally, so pre-mixed nasal sprays are the dominant format, and the variant question (selank vs N-acetyl selank) creates labeling confusion.
This guide covers documented per-mg pricing, format selection, COA verification, and red flags. For dosing context, see the selank dosing guide.
This is not a ranked vendor list — for that, see our Best Selank Vendors comparison.
Understanding Selank Pricing
Selank ships in three formats:
Lyophilized vials (5-30mg) — User reconstitutes into nasal spray bottle
Pre-mixed nasal sprays (30mg/3mL) — Most-cited format
N-acetyl selank variants — Slight premium for longer half-life
Current Market Pricing (2026)
Format & Size
Typical Price Range
Price Per mg
Best For
5mg lyophilized vial
$30-70
$6-14/mg
Tolerance testing
10mg lyophilized vial
$50-110
$5-11/mg
Short cycles
30mg pre-mixed nasal spray
$40-95
$1.33-3.17/mg
Standard intranasal use — best all-around
30mg N-acetyl selank
$50-120
$1.67-4/mg
Longer half-life users
30mg × 3 (kit)
$100-240
$1.10-2.67/mg
Long protocols
The pattern: Pre-mixed nasal sprays are dramatically cheaper per-mg than lyophilized vials. Same mechanism as semax — high-volume Russian-pharmaceutical manufacturing in spray format dominates the cheapest tier.
Cost Per Month at Common Doses
Daily Dose
Monthly Mass
Monthly Cost (5mg vial)
Monthly Cost (30mg nasal spray)
250 mcg/day
7.5 mg
$45-105
$10-24
600 mcg/day (mid-range)
18 mg
$108-252
$24-57
900 mcg/day
27 mg
$162-378
$36-86
For current vendor-specific pricing, see our Best Selank Vendors comparison.
Cheapest recommended vendor: Glacier Aminos' 10mg vial at $40.99 ($4.10/mg) — lowest $/mg from a recommended vendor. EZ Peptides matches the dose at $44 ($4.40/mg) with a 10% stack code. Compare current vendors ↓
How to Verify Selank Quality
Selank is a 7-residue peptide (Thr-Lys-Pro-Arg-Pro-Gly-Pro) — straightforward synthesis without unusual amino acids. Verification challenges parallel semax: variant clarity (selank vs N-acetyl selank) and nasal spray stability over storage time.
What a COA Should Include
Identity Confirmation
Mass spectrometry confirming 751.85 Da for selank or 793.91 Da for N-acetyl selank
Common community pattern: Pre-mixed nasal sprays are the most-purchased format. Lyophilized vials reserved for users wanting concentration flexibility.
N-Acetyl Selank Variant
N-acetyl selank (NA-Selank) extends serum half-life beyond the ~30-minute window of standard selank. The acetylation:
Increases CNS bioavailability through reduced peptidase degradation
Allows once-daily dosing instead of 2-3 daily nasal applications
Costs roughly 20-40% more per mg than standard selank
For users following published Russian clinical protocols (which used standard selank), the original variant is more research-backed. For users who prefer once-daily dosing, N-acetyl selank is the documented variant.
Vial/Bottle Size by Protocol
Tolerance testing context:
A 5mg lyophilized vial is the smallest unit cited
~20 days at 250mcg/day
Standard 600mcg/day intranasal protocol:
30mg pre-mixed nasal spray — 50 days supply
The most-cited format in vendor sales data
1 bottle per 2 months at this dose
Higher doses (900+ mcg/day):
30mg × 3 kit drops cost to $1.10-2.67/mg
Or N-acetyl selank for once-daily dosing
Vendor Evaluation Methodology
When comparing selank vendors:
Price Competitiveness (40%)
Normalize to cost per milligram. Pre-mixed nasal sprays at $40-95 for 30mg ($1.33-3.17/mg) score higher than 5mg lyophilized vials for users who don't need flexibility.
COA & Testing (30%)
Third-party labs (Janoshik, MZ Biolabs, Colmaric)
Recent (within 6 months)
Verifiable task number
Mass spec confirming variant
Reputation (30%)
Community feedback, shipping reliability, customer service, multi-year track record.
Shipping and Storage
Order Arrival
Lyophilized vials:
Vial integrity — no cracks, intact seal
Powder appearance — solid cake or loose powder
Labeling — batch/lot, mg content, "for research use only"
Pre-mixed nasal sprays:
Bottle integrity — intact tamper seal, working spray pump
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Frequently Asked Questions
Is selank legal to buy?
Selank is sold as a research peptide labeled 'not for human consumption.' It is approved as a finished pharmaceutical product in Russia for generalized anxiety disorder (GAD) but is not FDA-approved in the United States. Purchasing research peptides is legal in most US jurisdictions.
How much does selank cost per month?
Community intranasal protocols use 250-900mcg/day. Monthly mass at 600mcg/day is 18mg. Research-vendor 5mg lyophilized vials cost $30-70; pre-mixed 30mg nasal sprays cost $40-95. Monthly cost ranges from $30-100 depending on format.
What format should I buy?
Pre-mixed nasal sprays are the most-cited format because intranasal is the documented administration route in Russian clinical practice. Lyophilized vials are cheaper per-mg but require user reconstitution. N-acetyl selank variants (longer half-life) are also available at slight premium.
What purity should I look for in selank?
Third-party HPLC at 98%+ purity, plus mass spec confirming 751.85 Da for selank (Thr-Lys-Pro-Arg-Pro-Gly-Pro). N-acetyl selank has a different mass (793.91 Da). Make sure the COA states which variant — they're often confused in product listings.
Why is selank priced low compared to other peptides?
Selank is a 7-residue peptide with no unusual amino acids — synthesis is straightforward. Like semax, decades of Russian pharmaceutical manufacturing experience contribute to lower per-mg cost. Per-mg pricing typically $6-14/mg vs $20-40/mg for newer peptides.
Can I buy selank from a US pharmacy?
No. Selank is approved only in Russia. Research vendors are the only documented commercial source in the US.
This article is for educational and informational purposes only. It is not medical advice and should not be used to diagnose, treat, or prevent any condition. Consult a licensed healthcare provider before using any peptide.
