Made in California
Synthesized, tested, and filled within the United States.
Selank
Actual products may vary slightly from the images shown on this website.
Selank is a synthetic analog of a naturally occurring tuftsin peptide, researched for the signalling tied to stress response and attention. A naturally derived sequence, concentrated for research.
Free 2-Day Shipping
Free FedEx 2Day Shipping
Order by 10:00 AM PT, Monday–Thursday, and your order ships the same day.
Orders placed after 10:00 AM PT or from Friday through Sunday ship the following business day to avoid weekend carrier delays. Delivery is via FedEx 2Day service.
$75
- 200% money-back guarantee
- Batch-specific CoA
- Single-source manufacturing
Held to the highest standard
99%+ Purity
Verified by independent HPLC and LC-MS. No fillers, no salts, just the peptide.
Batch Consistency
Automated synthesis pipelines ensure uniform molecular sequences across all production runs.
The Research
Selank modulation of GABAergic tone and stress-related behaviour
Selank, a synthetic analog of the peptide tuftsin, has been studied for its anxiolytic profile and its modulation of GABAergic and monoaminergic signalling.
Read the full researchSources
- Filatova E, Kasian A, Kolomin T, et al. (2017). GABA, Selank, and Olanzapine Affect the Expression of Genes Involved in GABAergic Neurotransmission in IMR-32 Cells. Front Pharmacol;8:89.View source ↗
- Zozulya AA, Kost NV, Sokolov OYu, et al. (2001). The inhibitory effect of Selank on enkephalin-degrading enzymes as a possible mechanism of its anxiolytic activity. Bull Exp Biol Med;131(4):315-317.View source ↗
- Kasian A, Kolomin T, Andreeva L, et al. (2017). Peptide Selank Enhances the Effect of Diazepam in Reducing Anxiety in Unpredictable Chronic Mild Stress Conditions in Rats. Behav Neurol;2017:5091027.View source ↗
- Inozemtseva LS, Karpenko EA, Dolotov OV, et al. (2008). Intranasal administration of the peptide Selank regulates BDNF expression in the rat hippocampus in vivo. Dokl Biol Sci;421:241-243.View source ↗
- Semenova TP, Kozlovskaya MM, Zuikov AV, et al. (2009). Comparison of the effects of selank and tuftsin on the metabolism of serotonin in the brain of rats pretreated with PCPA. Eksp Klin Farmakol;72(4):6-8.View source ↗
The Cold Guarantee
Guaranteed pharmacy-grade cold, held end to end.
- Cold Origin
Chilled at release
Chilled within the hour it clears lot release. Never sits warm on a bench.
- Cold Vault
Logged 2–8 °C room
A temperature-logged 2–8 °C room, not a consumer fridge, logged around the clock.
- Cold Pack-Out
Phase-change packed
Packed into insulated, phase-change coolers minutes before pickup, not hours.
- Cold Transit
Rerouted on heat
Held or rerouted when forecasts spike. We’d rather delay a day than ruin a vial.
Common questions
What purity level are your peptides and how is it verified?
Vivo requires a minimum purity of 99%. If a production lot does not meet that threshold, we do not release it. Every lot undergoes independent third-party verification before release, including identity confirmation, purity analysis, potency quantification, and endotoxin testing.
What is a Certificate of Analysis (CoA) and how do I read it?
A CoA is a verified report from an independent laboratory documenting the material in one specific production lot. Start with the lot number, then review the identity, purity, potency, and endotoxin results. The report also lists the analytical methods and the laboratory responsible for verification.
Where are your peptides made?
Every Vivo peptide is synthesized, tested, and filled in California, and each released lot is tied to its own batch-specific Certificate of Analysis.
How should I store peptides?
Store unopened vials in a cool, dry place, protected from direct light, heat, and moisture. Refrigeration is not required while the product remains lyophilized. After reconstitution, keep vials refrigerated.
How fast do you ship and is cold shipping required?
Orders placed before 10:00 a.m. Pacific Time on business days are dispatched the same day, by UPS 2nd Day Air as standard, with UPS Next Day Air available at checkout. Shipping is complimentary on orders over $200. Lyophilized products do not require refrigeration in transit, but we cold-pack every order as an added measure against heat and humidity.
