Compound
Everything we've written on Selank — 12 articles covering the mechanism, the evidence, comparisons, and practical considerations.
12 articles
Sleep and recoveryAnxiety and sleep peptides compared — Selank, DSIP, oxytocin, low-dose SermorelinYou don't fall asleep so much as lie there cataloguing. The ceiling, the ambient hum of whatever your brain decided is unresolved, the fact that you know you need to sleep and that knowledge is precisely what's making it harder. You wake at 3 a.m. for no external reason and then spend an hour not-quite-conscious, not-quite-asleep, circling. The next day arrives already thinned out and the anxiety that kept you up is worse for the sleep debt, and the sleep debt is worse for the anxiety. The loop has its own particular logic and it's immune to basic advice.9 min readCognitive supportThe chronic low-grade headache pattern that lives behind your eyesIt's not a migraine. You know what a migraine is — or you've read enough to know this isn't that. It's not severe enough to stop you. It's not photophobic or accompanied by nausea most of the time. It doesn't put you in a dark room. It's just there: a low-grade pressure behind the eyes, or in the temples, or at the base of the skull where it meets the neck, and it's been there most days for long enough that you've started to think of it as your baseline. You manage through it. You take something for it. And the something helps for a few hours, and then it comes back, and you take something again, and the weeks pass.8 min readCognitive supportThe highly sensitive nervous system — when the world is louder than you can manageThe grocery store fluorescent lights are doing something specific to you. Not an annoyance — something more bodily than that, a low-grade physical wrong that most people in the same aisle don't seem to notice. The music in the restaurant is at a volume that makes conversation cost something. You leave a party that was objectively fine and you're not tired the way other people describe being tired — you're depleted at a different level, hollowed out in a way that takes a full day to undo. Someone near you is having a bad day and you can feel it before they say anything, in a way that doesn't feel metaphorical. Strong smells produce nausea. The scratchy tag in a shirt is a persistent distraction that others dismiss as background. You've been told your whole life, in various ways, that you are too much. Too sensitive. Too reactive. That you need to toughen up, that the world isn't going to turn its volume down for you.6 min readOrigins and discoveryPeptide research during the Cold War — the Soviet biology the West didn't seeIn the mid-1970s, in a research institute on Kirochnaya Street in Leningrad, a scientist named Vladimir Khavinson was developing a hypothesis about aging that Western gerontologists would not encounter for another twenty years. The hypothesis was not, at its core, different from ideas circulating in American and European labs about cellular senescence and protein regulation. But the experimental program Khavinson built around it — isolating short peptide fractions from organ tissues and testing them for bioregulatory effects — proceeded in near-total isolation from Western pharmacology, published in Russian-language journals with limited international circulation, funded by the Soviet military through channels that made some of the research formally classified, and shaped by institutional traditions that valued multi-organ systems thinking over the single-target drug development that dominated Western pharmaceutical methodology.10 min readCognitive supportPeptides for cognition — what research has explored for focus, memory, and clarityYou sit down to work and the words on the screen won't stay still in your head. Not because you're tired — you slept. Not because you're distracted — the room is quiet. There's just a layer of gauze between you and the thing you're trying to think through. You reach for a thought and find most of it there, but not all of it. The edges are soft where they used to be sharp.10 min readImmune modulationPeptides for stress and cortisol regulation — what research has explored across the HPA axisYou don't feel stressed the way you feel hungry. Chronic stress doesn't announce itself with a single sensation and then resolve when you eat. It settles in over months or years — a low-level hum underneath everything, a shorter fuse, a body that never quite unwinds after the hard days. You sleep, technically. You function, technically. But the recovery is shallow, the mornings don't feel fresh the way they used to, and somewhere along the way your baseline shifted without you noticing when.10 min readImmune modulationPeptides for stress resilience — the HPA axis and beyondYou don't feel stressed the way you feel hungry. Hunger is specific — it arrives at a known location and you understand what it wants. Stress doesn't announce itself the same way. It shows up as a short temper in the school pickup line, as the 3 a.m. ceiling-stare that recedes by morning without resolution, as the tension across your shoulders you only notice when someone asks if you're okay. By the time the pattern becomes visible to you, it's usually been running for a while. The body has been in it longer than your awareness has.10 min readCognitive supportPre-workout anxiety — when training starts feeling like fight-or-flightYou've been training for years. It's one of the things you do for yourself, one of the things that has reliably worked. And somewhere in the last year — not dramatically, not all at once — the warm-up has started feeling different. The first heavy set isn't anticipated the way it used to be. There's something closer to dread in it. Your heart rate is measurably elevated before the bar is even loaded. Your breathing is shorter than the exertion demands. The body is bracing instead of preparing, and you don't know when that switch happened.9 min readOrigins and discoveryWhy Russian nootropics never crossed the Atlantic — Semax, Selank, Cortexin, and the regulatory gapSomewhere in a Russian neurological clinic in 1999, a physician is writing a Semax prescription for a patient recovering from ischemic stroke. This is unremarkable in that context — Semax has been an approved pharmaceutical in Russia since 1994, used routinely in neurology wards, prescribed by ordinary physicians for stroke recovery and cognitive decline, with a safety record built across millions of patients. A few thousand miles away, in an American neurologist's office, the same physician has never heard the word. It does not appear in any clinical guideline he was trained on. It does not appear in UpToDate. It does not appear anywhere in the evidence base his institution recognizes as existing.8 min readCognitive supportWhat people are reporting about SelankThis article summarizes experiences reported in public online communities including Reddit, longevity forums, and discussion boards. We are not advocating human use of any compound discussed here. Many of the peptides discussed are not FDA-approved for the uses described, and some are explicitly not approved for human or veterinary use. What follows is a synthesis of what people have reported, presented to give readers context on the public conversation — not as guidance, not as evidence of safety or efficacy, and not as a recommendation. Decisions about any compound should be made with a qualified prescribing provider after a full medical evaluation.8 min readCognitive supportSemax and Selank — the deeper history of Russian neuropeptide pharmacologyIn the early 1980s, inside a research institute attached to the Russian Academy of Sciences in Moscow, a team of peptide chemists was working on a problem that had preoccupied Soviet pharmacology for decades: how to modify naturally occurring peptide hormones into stable, pharmacologically useful drugs. The Institute of Molecular Genetics was not primarily a clinical institution. It was a molecular biology research center, and its interest in neuropeptides was fundamentally mechanistic — these researchers wanted to understand how small peptide fragments derived from larger hormones could influence brain function in targeted and lasting ways. What they produced, over roughly a decade of synthetic chemistry and biological testing, became Semax and Selank: two synthetic neuropeptides that entered Russian clinical practice in the 1990s and have remained part of the Russian pharmacological landscape ever since.10 min readCognitive supportSemax, Selank, and the calm-focus questionYou've tried the stimulant route. The first week was productive — maybe genuinely productive — and then the jitteriness settled in, the appetite disappeared, and the crash at 4 p.m. made the second half of the day feel like a tax you owed. You've tried the other route too: the SSRI that took the edge off everything, including the part of you that cared about getting things done. Somewhere between wired and flat there's a thing you're looking for, and it doesn't seem to have a name.8 min read