# Selank + Semax Dissolving Strips

> Selank and Semax in pre-dosed, fast-dissolving thin films — 20 strips

All products are sold strictly for laboratory research use only. Not for human or veterinary use.

- Web page: https://peptidemedixeu.com/en/products/selank-semax-dissolving-strips/
- Brand: Peptide Medix EU
- Category: [Cognitive Blends](https://peptidemedixeu.com/en/collections/cognitive-blends/)
- from €178 (EUR)

## Sizes and prices (EUR)

| Size | Price | SKU |
| --- | --- | --- |
| 20 strips | €178 | SELANK-SEMAX-DISSOLVING-STRIPS-20-STRIPS |

_Catalog prices at build time; the web page and checkout are authoritative._

## Specifications

- **Peptide class:** Synthetic heptapeptides — tuftsin analogue and ACTH(4–10) analogue
- **Form:** Fast-dissolving thin-film strips in a sealed pack
- **Pack size:** 20 individual film strips
- **Actives:** Selank and Semax, pre-loaded at a fixed amount per strip
- **Purity (raw materials):** ≥99% by HPLC per peptide; lot-matched COA available
- **Selank CAS number:** 129954-34-3
- **Selank formula and weight:** C33H57N11O9; 751.89 g/mol
- **Selank sequence:** Thr-Lys-Pro-Arg-Pro-Gly-Pro
- **Semax CAS number:** 80714-61-0
- **Semax formula and weight:** C37H51N9O10S; 813.93 g/mol
- **Semax sequence:** Met-Glu-His-Phe-Pro-Gly-Pro
- **Research areas:** Attention and memory paradigms, BDNF and neurotrophin expression, GABAergic transmission, stress-response models, delivery-format comparison
- **Storage:** Sealed, cool and dry, protected from light and moisture

## Description

These dissolving strips carry two well-studied research heptapeptides in a pre-dosed thin film instead of a vial of lyophilised powder. A pack holds 20 separate strips. Each is a water-soluble polymer sheet with a set peptide load dispersed through it, so you can build a study arm by counting strips rather than weighing powder, calculating a dilution and sterile-filtering a solution.

The two active ingredients are Selank (Thr-Lys-Pro-Arg-Pro-Gly-Pro; CAS 129954-34-3) and Semax (Met-Glu-His-Phe-Pro-Gly-Pro; CAS 80714-61-0). Both are short lab-made peptides created by taking a natural active fragment — tuftsin in the case of Selank, ACTH(4–10) in the case of Semax — and adding a Pro-Gly-Pro tail that protects the end from exopeptidases. Both also dissolve freely in water, which is why they suit a dissolving film: the strip breaks up in watery media and releases its load without any organic solvent.

Researchers are interested in the pair because their bodies of evidence complement each other. Semax dominates studies of BDNF and NGF levels, TrkB signalling and tests of attention and memory; Selank dominates studies of GABA-A receptor subunits, enzymes that break down enkephalins, and genes switched on by stress. The film is mainly of interest as a way to compare handling and formats, not for any biological effect of its own.

## Frequently asked questions

### How many strips does a pack hold?

Twenty single thin-film strips, each loaded with a fixed, pre-measured amount of Selank and Semax. As the dose per strip is set during manufacture, study arms are put together by counting strips, not by weighing powder and working out dilutions.

### Are both peptides independently tested, with a COA?

Yes. An outside laboratory analyses the Selank and the Semax raw materials by HPLC to ≥99% purity and confirms their identity by mass spectrometry; the Certificate of Analysis for the batch is available. Check the pack's lot number against the COA before you log any data.

### Must the strips be reconstituted?

No — that is the whole idea. The film dissolves straight into aqueous media: no weighing, solvent, mixing, filtering or bacteriostatic water, and the sealed pack needs no cold chain either.

### What storage do the strips need?

Keep them sealed, cool and dry, away from light and damp. Moisture is what damages a thin film — once exposed, strips become sticky and hard to handle. Take them out singly using dry gloves or tweezers, and close the pack again straight away.

### What is the logic of combining Selank and Semax?

Their research areas complement each other — Semax is linked to studies of BDNF, neurotrophins and attention, Selank to GABA and stress-response research — and both are small peptides that dissolve well in water and carry the stabilising Pro-Gly-Pro end, so they load easily into a film.

---

All products offered on this website are intended solely for in-vitro laboratory research and development by qualified professionals. They are not drugs, foods, cosmetics or dietary supplements, and are not intended to diagnose, treat, cure or prevent any disease. Products must not be introduced into humans or animals in any manner. By purchasing, you confirm that you are a qualified researcher and accept full responsibility for handling and storage in accordance with applicable laws.

Peptide Medix EU · https://peptidemedixeu.com/en/products/selank-semax-dissolving-strips/