Selank on TikTok: separating Soviet-era research from hype

What did @garrettwayne0 actually say?

The creator argues that people using "Cilank" (selank) to treat depression or anxiety are missing the point. Their core claim: depression and anxiety are products of your environment, circumstances, and thought patterns, not a brain chemistry problem a peptide can solve. They stop short of saying don't use it, but the message is clear, selank is a bandage, not a fix. The actual fix, they say, was Jesus.

This is not really a video about selank's pharmacology. It's a philosophy-of-healing argument dressed in peptide language. That matters for how we evaluate it, because some parts of the underlying logic have real scientific grounding, and some do not.

Does the science back this up?

Partially, yes. The idea that external circumstances drive mental health struggles has strong support. But the claim that depression and anxiety are purely environmental, with no neurobiological component, is an oversimplification the research does not support.

Selank itself is a synthetic heptapeptide derived from tuftsin, originally developed in Russia and studied primarily by the Institute of Molecular Genetics in Moscow. Animal studies and a handful of small human trials suggest anxiolytic effects, possibly through modulation of GABA-A receptors and brain-derived neurotrophic factor (BDNF) expression. Zozulya et al. (2001, Bulletin of Experimental Biology and Medicine) found selank reduced anxiety in patients with generalized anxiety disorder in a small controlled trial. That's real data, but it is limited, not replicated widely in Western peer-reviewed literature, and far from enough to draw firm clinical conclusions.

On the environmental side, the biopsychosocial model of depression, supported by decades of research including Kendler et al. (2006, American Journal of Psychiatry), confirms that life stressors and social circumstances meaningfully contribute to depressive episodes. The creator is not wrong about that piece.

What did they get wrong (or right)?

They got one thing meaningfully right: using any anxiolytic, peptide or pharmaceutical, without addressing underlying life circumstances is a recipe for dependency on a crutch. That is a defensible clinical perspective. Psychologists call it the difference between symptom management and root-cause work.

What they got wrong is the implicit claim that depression and anxiety are fundamentally environmental and volitional problems. That framing erases people with generalized anxiety disorder, major depressive disorder, or treatment-resistant depression, conditions with documented neurobiological underpinnings. Saying someone is depressed because of "things that you are thinking mentally" edges dangerously close to the discredited idea that mental illness is a mindset problem you can just fix.

They also do not address that selank has a real, if limited, evidence base for anxiety specifically. Dismissing it as a solution to a wound you haven't treated is not the same as saying it has no legitimate role in a broader treatment plan. Nuance matters here, and the video skips it.

What should you actually know?

Selank is not approved by the FDA for any indication. It is not a cure for depression or anxiety, and no responsible clinician would frame it that way. The existing studies are small, mostly Russian-origin, and not sufficient to establish it as a first-line or standalone treatment for any diagnosed mental health condition.

That said, the creator's instinct that peptides are sometimes used as shortcuts around harder psychological work is worth taking seriously. Research on anxiety treatment consistently shows that cognitive behavioral therapy outperforms or matches pharmacological intervention for generalized anxiety disorder over the long term, per Hofmann and Smits (2008, Journal of Clinical Psychiatry).

If you are experiencing depression or anxiety severe enough that you are researching peptides as a solution, the most evidence-supported step is talking to a licensed mental health provider, not sourcing a research peptide. Selank is not regulated as a drug in the US, quality and purity of available products vary significantly, and the absence of FDA oversight means you are taking on real unknowns. A peptide is not a substitute for therapy, medication when clinically indicated, or the kind of life changes the creator is actually advocating for.