Selank on TikTok: separating Russian peptide research from hype

What did @collin.rice actually say?

In short: he says selank erased his anxiety completely, made him socialize with strangers like old friends, and gave him noticeable mental clarity, all within about a week of use. He also mentions stacking it with "axe" and a "deep delta sleep inducing peptide" and frames himself as a self-experimenting "lab rat."

His exact words: "I have literally no more anxiety anymore" and "I will never stop taking this shit." He draws a comparison to antidepressants and anti-anxiety medications to justify ongoing peptide use, which is a move worth examining. He also acknowledges, almost in passing, that it's "kind of sad" he needs something external to feel okay socially. That moment of self-awareness gets buried fast under enthusiasm, but it matters clinically.

Does the science back this up?

Partially, but the evidence base is thin and almost entirely preclinical or from small Russian trials. Selank is a synthetic heptapeptide analog of tuftsin, and it has shown anxiolytic effects in animal studies and a handful of human trials. But "handful" is doing heavy lifting here.

The most-cited human work comes from Filatova et al. (2007, Bulletin of Experimental Biology and Medicine), which found selank reduced anxiety scores in patients with generalized anxiety disorder and neurasthenia. Meshcheriakov et al. (1997) also documented reduced anxiety in small cohorts. The proposed mechanism involves modulation of GABA-A receptors and enkephalin metabolism, which is biologically plausible. Medvedev et al. (2014, Zhurnal Nevrologii i Psikhiatrii) noted effects on BDNF expression in rats. The socialization and "mental clarity" claims are much harder to pin to published data. No rigorous, large-scale, placebo-controlled RCT exists in Western peer-reviewed literature. Most studies are Russian, not replicated elsewhere, and involve small samples.

What did they get wrong (or right)?

He got the anxiety angle directionally right, the preclinical and limited clinical evidence does support anxiolytic properties for selank. Credit where it's due. The mechanism is not smoke and mirrors.

What he got wrong, or at least oversimplified: "I have literally no more anxiety anymore" after roughly one week is a red flag for placebo effect or expectation bias, not a disqualifying one, but a real one. Self-reported outcomes with no baseline measurement, no control, and strong prior expectation are notoriously unreliable. The socialization claims are largely unverifiable from published data. His framing of selank as equivalent to prescription anti-anxiety medications is misleading. Benzodiazepines and SSRIs have decades of randomized trial data behind them. Selank does not. Saying "people take anti-anxiety medications all the time" as a justification does not put selank in the same evidence category. It just doesn't.

The "lab rat" self-experimentation framing is a real risk. Stacking multiple peptides without clinical oversight, especially adding an unnamed "deep delta sleep inducing peptide," is not equivalent to a monitored protocol.

What should you actually know?

Selank is a research peptide. In the United States it is not FDA-approved for any condition. It is not a supplement. It is not a prescription medication you can get at a pharmacy. It occupies regulatory gray space, and quality control across suppliers varies significantly. That matters because purity, concentration, and sterility all affect both safety and any effect you might experience.

The anxiolytic evidence is real but limited. If you have clinical anxiety, a conversation with a licensed provider is the appropriate starting point, not a TikTok update. Selank may warrant more research attention, but "a weekend" of subjective improvement in a 49K-view video is not a clinical recommendation. The sleep peptide he mentions, likely delta sleep-inducing peptide (DSIP), has its own sparse and inconsistent evidence base. Stacking compounds with limited interaction data is a risk most people underestimate.