Selank
Calm that doesn't cost you your edge.
Vial content, not a dose.
Selank is a synthetic heptapeptide — threonine, lysine, proline, arginine, proline, glycine, proline — developed as a stabilized analog of tuftsin, a short immune peptide the body already produces. It comes from the same Russian research lineage as Semax, and is studied for its activity within the brain's own calming and regulatory signaling rather than for sedation. Research describes it as anxiolytic without a sedative effect, alongside immunomodulatory activity inherited from its parent peptide. It is supplied as a 10 mg vial — vial content, not a dose.
Calm is not something the body has to be taught. Tuftsin is already part of its own signaling vocabulary, and the pathways Selank engages — GABA, serotonin, enkephalin — are the ones the body uses to bring itself down from alert. Under sustained stress those signals can stay muted. Selank is studied for helping them register again, not for replacing them with sedation.
How the signal travels.
Selank does not act on a single receptor. Research describes it working across several of the brain's regulatory systems at once, which is what the tuftsin scaffold appears to allow.
The sequence Thr-Lys-Pro-Arg-Pro-Gly-Pro is a stabilized version of tuftsin, an immune peptide the body already produces. That structural stabilization is the difference between Selank and its parent molecule.
Selank is studied for modulating GABAergic and serotonergic signaling — the systems the brain uses to regulate arousal and mood — which research associates with an anxiolytic effect that does not carry sedation.
Selank is also described as stabilizing the enkephalin system, one of the body's own internal calming peptide families. This is a supporting role within existing signaling rather than a new input.
Because it derives from an immune peptide, Selank also carries immunomodulatory activity — one reason research describes it as acting across more than one of the body's regulatory systems.
What it's used to support.
Selank may be of interest to women 35 and older for whom stress registers differently than it once did — a nervous system that stays switched on, or a baseline of low-grade tension that arrived alongside hormonal change. It suits those who want that addressed without sedation, and within a full picture built with a practitioner rather than in isolation.
The figures above are the amount of lyophilized peptide in the vial — they are not a dose. Your protocol, timing, and duration are set one-to-one with a licensed practitioner based on your history and goals.
The specifics, if you want them.
Technical specifications
Where the research stands
Selank's human clinical research was conducted largely in Russia, in the context of generalized anxiety and neurasthenia, and much of it is published in Russian. Independent replication outside that body of work remains limited, and long-term controlled safety data is limited as well. It is a real clinical record — narrower and less independently confirmed than the Western literature on better-studied peptides.
Storage & handling
Before you start.
We don't publish a route, a format, or a schedule for Selank. The 10 mg on the vial describes what it contains, not what anyone takes. Administration is settled with a licensed practitioner during consultation, based on your history and what else is already in place.
We don't attach a timeline to it. Stress response is shaped by sleep, hormonal status, and load, and individual response varies accordingly. That judgment belongs to whoever is reading your labs, not to us.
Yes. Selank acts on regulatory systems in the brain, and it should only be introduced under a licensed practitioner who can review your health history, anything else you're taking, and confirm whether it's an appropriate fit for you.
Research describes it as anxiolytic without sedation — that distinction is the reason it draws interest. It is studied for modulating the body's own calming pathways rather than suppressing alertness, though how any individual responds is a question for your practitioner, not this page.
Because Selank is built from tuftsin, an immune peptide. That inheritance is part of its profile rather than a side note, and it's one reason research describes activity across more than one system. What it means for you specifically is a consultation question.
Every Inner Peptides formula is independently tested before it ships, with a Certificate of Analysis available on request. Learn more about our testing standard.
