Selank
Tuftsin analog, modulates GABA/serotonin
Potency loss over time
Estimated potency retained (%) per storage condition. Hover the chart for details.
⚠ Estimates modelled per compound from its molecular properties (sequence length, cyclisation, oxidation- and deamidation-prone residues, light sensitivity). Indicative only — not lab-measured per batch.
Time in body
How much of a single dose remains over time, modelled from the terminal half-life. Illustrative — not a dosing tool.
Half-life ~25 min (literature estimate) · effectively cleared (~97%) after ~2.1 h (5 half-lives).
Research context only — not dosing guidance. · Source: Registered-drug reviews (~20–30 min)
| # | Suppliers | Price | €/mg | Price trend (6 months) | Purity | COA | Score ⓘ | |
|---|---|---|---|---|---|---|---|---|
| 1 |
 RES
RESEARCH PEPTIDES EUROPE
in stock 🇪🇸 ES
| €17.99 | €3.6/mg | 99.8% | ✔ HPLC/LC-MS | Shop → | ||
| 2 |
 CRY
CRYSTAL PEPTIDES
in stock 🇧🇬 BG
| €24.99 | €5.0/mg | 99.7% | ✔ HPLC | Shop → | ||
| 3 |
 CLE
CLEAN PEPTIDES
in stock 🇳🇱 NL
| €29.95 | €5.99/mg | 99% | ✔ HPLC | Shop → |
| # | Suppliers | Price | €/mg | Price trend (6 months) | Purity | COA | Score ⓘ | |
|---|---|---|---|---|---|---|---|---|
| 1 |
 PHD
| €28.93 | €2.89/mg | 99% | ✔ HPLC | Shop → | ||
| 2 |
 OME
OMEGA PEPTIDES
in stock 🇳🇱 NL
| €29.99 | €3.0/mg | ▼1.3% | 99% | ✔ Third-party | Shop → | |
| 3 |
 PRI
PRIMAL PEPTIDES
in stock 🇳🇱 NL
| €29.99 | €3.0/mg | ▼2.2% | 99% | ✔ COA | Shop → | |
| 4 |
RES
RESEARCH PEPTIDES EUROPE
in stock 🇪🇸 ES
| €29.99 | €3.0/mg | 99.8% | ✔ HPLC/LC-MS | Shop → | ||
| 5 |
 PUL
PULSE PEPTIDES
in stock 🇨🇾 CY
| €29.99 | €3.0/mg | 99% | ✔ HPLC/qNMR | Shop → | ||
| 6 |
 ADR
ADRIA SCIENCE
in stock 🇸🇮 SI
| €31.5 | €3.15/mg | 99% | ✔ HPLC | Shop → | ||
| 7 |
 PEP
PEPTIDMARKT
in stock 🇩🇪 DE
| €36 | €3.6/mg | 99.8% | ✔ HPLC | Shop → | ||
| 8 |
 NEX
NEXTGEN PEPTIDES
in stock 🇳🇱 NL
| €44.95 | €4.5/mg | ▲2.4% | 99% | ✔ HPLC | Shop → | |
| 9 |
 BEY
BEYOND PEPTIDES
in stock 🇪🇺 EU
| €46.78 | €4.68/mg | 99% | ✔ HPLC | Shop → | ||
| 10 |
 REG
REGENORIX PEPTIDES
in stock 🇳🇱 NL
| €48.99 | €4.9/mg | 99% | ✔ HPLC | Shop → | ||
| 11 |
CLE
CLEAN PEPTIDES
in stock 🇳🇱 NL
| €49.95 | €5.0/mg | 99% | ✔ HPLC | Shop → | ||
| 12 |
 RET
RetaEU
in stock 🇳🇱 NL
| €49.95 | €5.0/mg | 99% | ✔ HPLC | Shop → | ||
| 13 |
 PEP
PEPTA SUPPLY
in stock 🇳🇱 NL
| €49.99 | €5.0/mg | 99% | ✔ HPLC | Shop → | ||
| 14 |
CRY
CRYSTAL PEPTIDES
in stock 🇧🇬 BG
| €49.99 | €5.0/mg | 99.7% | ✔ HPLC | Shop → | ||
| 15 |
 PEP
PEPTIDE LAB
in stock 🇳🇱 NL
| €54.95 | €5.5/mg | 99% | ✘ COA Expired | Shop → | ||
| 16 |
 24P
24PEPTIDES
in stock 🇳🇱 NL
| €59 | €5.9/mg | ▼7.2% | 99% | ✔ Liquilabs | Shop → |
| # | Suppliers | Price | €/mg | Price trend (6 months) | Purity | COA | Score ⓘ | |
|---|---|---|---|---|---|---|---|---|
| 1 |
PEP
PEPTIDE LAB
in stock 🇳🇱 NL
| €157.95 | €5.26/mg | 99% | ✘ COA Expired | Shop → |
| # | Suppliers | Price | €/mg | Price trend (6 months) | Purity | COA | Score ⓘ | |
|---|---|---|---|---|---|---|---|---|
| 1 |
PEP
PEPTIDE LAB
in stock 🇳🇱 NL
| €259.95 | €5.2/mg | 99% | ✘ COA Expired | Shop → |
| # | Suppliers | Price | €/mg | Price trend (6 months) | Purity | COA | Score ⓘ | |
|---|---|---|---|---|---|---|---|---|
| 1 |
PEP
PEPTIDE LAB
in stock 🇳🇱 NL
| €499.95 | €5.0/mg | 99% | ✘ COA Expired | Shop → |
Prices manually checked and updated monthly — source: publicly available supplier data. No affiliate links, no paid placement.
Selank
Mechanism, evidence level, EU status and COA guidance per compound. No dosages, no protocols — that belongs with a doctor.