Selank + Semax stack

Selank + Semax stack is supplied as lyophilized powder under nitrogen. Typical reconstitution is in sterile or bacteriostatic water; the exact concentration depends on your protocol. Our free reconstitution calculator computes mL per dose and insulin-syringe units from any combination of vial size, water volume, and target dose.

Batch SK/SM-2606 of Selank + Semax stack is verified at 99.0%+ HPLC main-peak purity, with confirmation of molecular weight by LC-MS and endotoxin screening by LAL assay. One vial of every batch is also shipped to an independent US-based third-party lab for blinded re-verification. The full COA — including the chromatogram, mass spec trace, and third-party report — is bundled with your order as a downloadable PDF.

All orders ship cold-chain via DHL Express from our Guangzhou facility. Cold-pack is validated to hold under 8°C for 96 hours. Customs duties are prepaid by us — no surprise charges on delivery. Estimated transit time is 7-10 business days door to door. Tracking number is emailed when the shipment is scanned by DHL.

ACH bank transfer (2% off, recommended), USDC / BTC / ETH crypto (5% off), Zelle, CashApp, Venmo, or wire transfer for institutional orders. We do not accept credit cards because card processors prohibit research-peptide merchants in their terms of service. Full payment-method details are on the shipping & payment page.

Several cognitive peptides — particularly Selank and Semax — have been studied via intranasal administration in published research. Nasal formulations are typically prepared at lower concentrations (around 0.1-0.5 mg/mL) with adjusted osmolarity. Vesta ships the lyophilized peptide; the choice of administration route and formulation is up to the researcher.

Yes — most cognitive peptides are light-sensitive once in solution. Store reconstituted material in amber vials or wrapped in foil and keep refrigerated. Avoid repeated freeze-thaw cycles. Typical post-reconstitution stability is 4-6 weeks at 2-8°C in bacteriostatic water.