PepRank

Selank

50%positive48 reports

Also: TP-7 · Selank acetate · Tuftsin analogue (Thr-Lys-Pro-Arg-Pro-Gly-Pro)

CautionSocialSleepNasal / Injection

Non-sedating anxiolytic; quiets rumination and social anxiety without benzo-style dependence.

TKPRPGP · unmodified (tuftsin TKPR + PGP) (7 residues)

TKPRPGP unmodified (tuftsin TKPR + PGP)

#14 of 61 research peptides · updated
Access
Grey market
Cost / month
≈ €5.7–11
at 250–500 mcg/day · Semax Polska · €0.75/mg · a blend, as no pure pack is listed
Felt in 0 min – 1 h, lasts 3–6 h
48 user reports
Glowing 9Positive 15Mixed 5Nothing 9Negative 5Bad reaction 5
  • r/PeptidePathways· · 73 upvotesOriginal ↗

    Since starting selank, I feel noticeably more comfortable and can communicate like a normal human being. The difference is night and day.

    GlowingSocial · Nasal · a few days

    high-functioning autism

  • r/NooTopics· · 53 upvotesOriginal ↗

    Started selank last month, 0.48mg intranasally once a day and WOW. A social situation that would have me at 7/10 tension is now a 3/10 at most. Physical symptoms - gone.

    GlowingSocial · 480 mcg once daily · Nasal · 1 month (later 21 on / 7 off)

    social anxiety since age 9

  • r/prefrontal· · 10 upvotesOriginal ↗

    From day two I already felt a sober kind of mood fall, becoming a more intense depression as the days passed. I also became withdrawn, socially anxious, frightened and small whilst in public, worthless and hopeless.

    Bad reaction1 week

    sensitive to serotonergic drugs

Users report
The most glowing reports in this group: a large minority describe social anxiety or rumination 'just gone' within days, several on SSRIs or tapering benzos. Roughly 30-40% report nothing or 'very subtle', and there is a small but recurring tail of bad reactions (anxiety spikes, depressive dip, 'out of it') lasting days to occasionally weeks.
Best effects
Reduced rumination/overthinking · less social anxiety, easier eye contact · calm without sedation · calmer sleep and dreams · helps some taper benzos/SSRIs
Downsides
Sinus headache or nasal irritation (nasal) · short duration (3-6 h) · mild next-morning hangover/tiredness · lower libido (isolated reports) · paradoxical anxiety or depressive dip in a minority, resolves after stopping
Evidence
Approved drug — approved in Russia (Selank 0.15% nasal, reg. 2009); small human trials (GAD vs medazepam, n=62)
Caveat
No mechanistic red flag (GABA-A modulation, enkephalinase inhibition, IL-6 modulation), but Western-quality human data are thin. A handful of users report a bad reaction after a single dose that took weeks to fade; start low. FDA lists 'insufficient information' rather than a specific harm.
Typical use
250-500 mcg/day nasal or subq, often 5 days on/2 off or 2-4 week cycles; titrate from 100-200 mcg.
Getting it
Pharmacy drug in Russia (0.15% nasal drops); elsewhere research-peptide vials and nasal sprays.
Stacked with
Semax: The classic pairing: Semax in the morning for focus, Selank later for calm; several use both before public speaking. · Benzodiazepines or SSRIs: Many reports come from people on an SSRI or tapering a benzo; a Russian trial used it as add-on to phenazepam, but bad reactions also cluster in people on psychiatric drugs. · GB-115: Run together or rotated for anxiety; users describe Selank as calming the mind and GB-115 the body.

User reports 55

  • r/PeptidePathways· · 73 upvotesOriginal ↗

    Since starting selank, I feel noticeably more comfortable and can communicate like a normal human being. The difference is night and day.

    GlowingSocial · Nasal · a few days

    high-functioning autism

  • r/NooTopics· · 53 upvotesOriginal ↗

    Started selank last month, 0.48mg intranasally once a day and WOW. A social situation that would have me at 7/10 tension is now a 3/10 at most. Physical symptoms - gone.

    GlowingSocial · 480 mcg once daily · Nasal · 1 month (later 21 on / 7 off)

    social anxiety since age 9

  • r/Biohacking· · 35 upvotesOriginal ↗

    Girl same, my entire life has been constant overthinking constant catastrophizing, zero trust for anyone in my life One week intranasal selank, poof. Gone. Without any side effects?

    GlowingNasal · 1 week

    lifelong overthinking

  • @corbinians_bear· · 21 likesOriginal ↗

    Selank is the most effective anxiolytic I have ever used. They have fewer side effects than anything else I have tried.

    Glowing

  • r/Biohacking· · 10 upvotesOriginal ↗

    I can say confidently at 300mcg a dose this stuff has been absolutely a life changer. My only complaint is that it doesn't seem to last more than 5 hours...

    GlowingSocial · 300 mcg · Injection

    lifelong social anxiety, never on SSRIs (thread OP)

  • r/Biohacking· · 6 upvotesOriginal ↗

    Over 20 years on an ssri (20mg citalopram)...three days of selank and all my overthinking gone.

    Glowing3 days

    20 years on citalopram

  • r/Biohacking· · 5 upvotesOriginal ↗

    Selank is the best thing I have ever taken for GAD. I am on 15mg Escitalopram, while it helps with the pounding heart, it never quieted all the noise (rumination, doom and gloom, etc). Exactly the morning after taking Selank nasal spray, all the noise was gone.

    Glowing1 spray per nostril 2x/day, then 1x/day · Nasal · 4 weeks

    GAD, on escitalopram 15 mg

  • @bainsworth81· · 2 likesOriginal ↗

    Two months in and my anxiety is gone. As someone who’s struggled with severe anxiety and depression since I was 12 this feels amazing, and has changed my life

    GlowingInjection · 2 months

    severe anxiety and depression since age 12

  • r/BodyHackGuide· · 1 upvotesOriginal ↗

    after my first cycle of it, even off of it, my baseline anxiety is noticeably lower and my social anxiety has dramatically decreased. most times i don’t feel as i need it anymore.

    GlowingSocial · 400 mcg each morning · repeated 2-3 week cycles

  • @peptidepirate· · 45 likesOriginal ↗

    Selank at night calms the nervous system without making you feel sedated🏴‍☠️ What I have noticed since the split 🏴‍☠️ I fall asleep faster than I have since starting reta no doubt🏴‍☠️ Stay asleep through out the night now 🏴‍☠️

    PositiveSleep · 5 weeks

    selank at night, semax AM, on retatrutide

  • @lakemandude· · 41 likesOriginal ↗

    Day one, the effects of stress almost disappeared. Still stressed but less high strung. Wife noticed. ... Selank’s the one I’d run again.

    Positive~200 mcg/spray · Nasal

  • r/NooTopics· · 20 upvotesOriginal ↗

    For the first 2 weeks I did not notice much from Selank. I originally got it to balance out Semax and reduce anxiety or jitters, since I had read it was the “perfect combo.” It was not until around week 3 that I really started noticing some changes.

    PositiveSleep · 4-6 sprays 3x/day · Nasal · 4 weeks

    stacked with Semax

  • r/PeptidePathways· · 10 upvotesOriginal ↗

    I use semax and selank before any public speaking engagement. What used to be a horrible struggle is now something I can look forward to. Words come easy and anxiety melts away.

    PositiveSocial · Injection

    taken with Semax before speaking

  • r/Biohacking· · 10 upvotesOriginal ↗

    I have a long history of generalized anxiety disorder. I added SELANK to my stack. 20 units a day 10mg vial It has helped take away the physical symptoms of anxiety immensely.

    Positive500 mcg/day · Injection · 2 weeks

    GAD, on low-dose sertraline after stopping fluoxetine

  • @itszore· · 7 likesOriginal ↗

    Like I’ll have periods of time where every day my heart is just pounding in anxiety, even if I have no mental anxiety And like 24-48Hrs after doing 600-1200mcg selank intranssally it goes away. Although it could be placebo effect

    Positive600-1200 mcg · Nasal

  • r/BodyHackGuide· · 4 upvotesOriginal ↗

    i've run selank a few times and it's subtle, almost to the point where you question if it's doing anything. 400-500mcg was the sweet spot for me but the effect is more about what doesn't happen, less mental chatter, less of that background tension

    Positive400-500 mcg

  • r/NooTopics· · 3 upvotesOriginal ↗

    In the three years since I left this comment, I have tried several different Selank formulations and some have worked really well for depression and anxiety. It's a temporary fix but it genuinely works, if the product is good.

    PositiveNasal · intermittently over 3 years

  • @k10A51_official· · 3 likesOriginal ↗

    I just dosed Selank before two meetings for my small business that required calm incisive alertness, and boy did that deliver.

    Positive

  • @anamarz_amz· · 3 likesOriginal ↗

    It’s a powerful anxiolytic/calming peptide and has zero side effects for me. And I don’t tolerate any psych drug.

    Positive

    MCAS, intolerant of psychiatric drugs

  • @LL_PATRIOT· · 2 likesOriginal ↗

    I’ve been using Selank (and more potent modern versions) for decades to help me get to sleep. As someone with severe ADHD, it’s one of the few things that actually works.

    PositiveSleep · decades

    severe ADHD

  • r/Anxiety· · 1 upvotesOriginal ↗

    Since I've started taking it (like 1-2 weeks ago) my general anxiety decreased a lot, no adverse effects. I'd say, my behaviour got even more confident, than the subjective feeling.

    Positive300-600 mcg · 1-2 weeks

    GAD and social anxiety after an infection

  • r/Anxiety· · 1 upvotesOriginal ↗

    There is no body feel or mental impairment like with benzos or beta blockers. It is most notable daily in public speaking, where my general anxiety went from like a 6-8/10 to maybe 2/10

    PositiveSocial · 250-500 mcg each morning · Injection

    has a benzo script, rarely used

  • @Paerbaer· · 1 likesOriginal ↗

    I didn’t feel much on selank but i will say i did notice the effects when i least expected it. During high stress situations & times where id feel overwhelmed or frustrated, I wasn’t. I was calm and collected.

    Positive

  • @Cramersayz· Original ↗

    For me it reduces the inner dialogue and makes social situations easier to manage.

    PositiveSocial

  • r/NooTopics· · 37 upvotesOriginal ↗

    After the first dose I finally am free from social anxiety and many of my ND social issues. I easily hold eye contact and can make small talk no problem!

    MixedSocial · 0.3 mL Mon/Wed/Fri (pharmacy-dispensed) · Injection · 3 separate weeks

    neurodivergent, lifelong social anxiety

  • @BhavanChand· · 8 likesOriginal ↗

    Took the nasal spray right before bed the last week Instead of helping me wind down, I felt slightly mentally alert or lightly activated after a few hours ... Conclusion : Taking Selank in the morning or late afternoon works great for me

    MixedNasal

  • r/Biohackers· · 3 upvotesOriginal ↗

    I do feel like my ADHD has gotten worse with Selank because of the carefree attitude.

    Mixed

    ADHD, on a GLP-1

  • r/BiohackingU· · 2 upvotesOriginal ↗

    worked a treat in the first 2 weeks, was extremely calm - then noticed I was getting depressive episodes, ruminating thoughts, chest tightening.

    Mixed250 mcg/day, evenings · 2+ weeks, 5 days a week

  • r/Anxiety· · 1 upvotesOriginal ↗

    I started Selank last week and I’ve been taking like 250mcg and I swear it’s almost like when I was prescribed Ambien

    Mixed250 mcg · Injection · 1 week

  • r/NooTopics· · 5 upvotesOriginal ↗

    I tried regular Selank, NA Selank, and Semax from everychem. Can't say I really felt anything at all tbh

    NothingNasal

    tried regular and NA-Selank sprays

  • r/NooTopics· · 5 upvotesOriginal ↗

    Selank did nothing for me, but I never had anxiety issues to begin with.

    Nothing

    no anxiety at baseline

  • r/Biohackers· · 4 upvotesOriginal ↗

    Nothing. I’m taking between 600-800mcg of each in each nostril and don’t feel a thing. I won’t waste my money on them again.

    Nothing600-800 mcg per nostril · Nasal

    with Semax

  • @wheezy_thunder· · 2 likesOriginal ↗

    Didnt seem to get much from selank though

    NothingNasal

  • @ydeigin· · 2 likesOriginal ↗

    Noopept, Semax or Selank didn’t do anything for me.

    Nothing

  • r/Anxiety· · 1 upvotesOriginal ↗

    Selank actually didn't help me much. Didn't really notice any difference but for some people its different.

    Nothing

  • r/NooTopics· · 1 upvotesOriginal ↗

    No i injected it a few times an stopped. Didn’t notice any benefits or side effects

    NothingInjection · a few injections

  • @x3ideRaven· · 1 likesOriginal ↗

    Selank no effect at all. All from multi-vial Jano tested trusted sources.

    Nothing

  • @LongevityDad· Original ↗

    Ran it for 6 weeks. Nothing made me want to keep in in the protocol.

    Nothing6 weeks

  • r/NootropicsHelp· · 2 upvotesOriginal ↗

    I thought its calming but for me its the opposite, just pure stress. Its been nearly 10h and i still feel like this, how long does this last and why is this?

    NegativeInjection · single dose

  • r/BodyHackGuide· · 1 upvotesOriginal ↗

    ive been trying selank for 5 days now only thing it does so far my social anxiety is even worse

    NegativeSocial · 5 days

  • r/NootropicsHelp· · 1 upvotesOriginal ↗

    For me, the sensation mildly resembles being on cocaine, and by the evening I got extremely irritable, aggressive, mood swings, dry eyes, dizzy and racing thoughts.

    Negative3 days

  • r/BiohackingU· · 1 upvotesOriginal ↗

    I just took my first dose of Selank last night. Started low at 200mcg. I felt like I was having a panic attack, chest was tightening, mind racing, tossing and turning all night.

    NegativeSocial · 200 mcg · single dose

    mild social anxiety

  • r/Biohacking· · 1 upvotesOriginal ↗

    My experience was grogginess, short temper and lethargy. Tried various doses, subcutaneous and intranasal, ended up discarding the remaining vials.

    NegativeInjection

    tried subq and nasal at several doses

  • r/prefrontal· · 10 upvotesOriginal ↗

    From day two I already felt a sober kind of mood fall, becoming a more intense depression as the days passed. I also became withdrawn, socially anxious, frightened and small whilst in public, worthless and hopeless.

    Bad reaction1 week

    sensitive to serotonergic drugs

  • @thrive_ortho· · 6 likesOriginal ↗

    I had the same experience with Selank. It’s supposed to relieve anxiety and it had the opposite effect. Brain fog and increased anxiety.

    Bad reaction

  • r/prefrontal· · 2 upvotesOriginal ↗

    I had a bad reaction after a single dose. Depression anxiety and strong agitation. Indescribable symptoms for several days.

    Bad reactionsingle dose

    pre-existing burnout

  • @PeptideOverload· · 2 likesOriginal ↗

    Selank-like an SSRIish very 5HT vibe. Was agitated and edgy like a mini mushroom come up.

    Bad reactionInjection

  • @endtl_· · 2 likesOriginal ↗

    I wouldn't recommend Selank daily, at least in my experience. Grew a tolerance very fast and started creating anxiety without it + without increasing dose. Similar to Benzos.

    Bad reaction

  • @BasedBiohacker· · 360 likesOriginal ↗

    selank is QUICKLY becoming my favorite compound to add on to my usual stack on high-stress days and whenever i need more creativity 500 mcg up the nose and i genuinely feel like i could calmly paint the mona lisa inside of a burning building

    Positive500 mcg · Nasal · vendor-adjacent

    with armodafinil and bromantane

  • @morellifit· · 114 likesOriginal ↗

    I use it before high-stress situations where I need to stay calm without losing my edge, i.e. less mental noise and tension, but I'm still sharp.

    Positivevendor-adjacent

  • @lipstickhippiee· · 58 likesOriginal ↗

    500mcg this definitely did something and could now see why it’s regarded as an anxiolytic. It’s similar to the feeling of a benzodiazepine except it’s not sedating and there’s no feeling of impairment.

    Positive500 mcg · vendor-adjacent

  • @Zygomatic03· · 53 likesOriginal ↗

    Solid anxiolytic, calming. Find it helps a lot with racing thoughts and overthinking in social situations. Stacks nicely with Semax for a light but effective daily work / social stack

    PositiveNasal · vendor-adjacent

  • @pepfessions· · 44 likesOriginal ↗

    A week in and I’m sleeping better than I have in years, barely moving at night, waking up rested, completely at peace with my morning coffee. ... Now the sex drive seems to have left again.

    MixedSleep · 1 week · vendor-adjacent

  • @James9thLife· · 51 likesOriginal ↗

    1mg subQ Selank last night I’m still not really “sold” on it Modest effects at most, maybe a bit quieter on the head

    Nothing1 mg · Injection · vendor-adjacent

  • @James9thLife· · 3 likesOriginal ↗

    Damn I wish nasal Selank did something for me! I tried it a few times and it just gave me a headache :/

    Bad reactionNasal · vendor-adjacent

Safety

Tier by safety barStrict CautionBalanced CautionEvidence only Caution

Seen harmMechanismData gapSilent harmProduct

Seen harm 1/3
Russian trials of 60-70 patients against benzodiazepines report no serious adverse events. Two first-hand reports describe a depressive episode, one after a single dose, lasting weeks to months, both in people with prior burnout or serotonergic sensitivity: isolated and confounded. Zozulia et al. 2008: Selank vs medazepam in GAD and neurasthenia, n=62 (PubMed 18454096) ↗Medvedev et al. 2014: Selank vs phenazepam, n=60 (PubMed 25176261) ↗r/prefrontal: Selank caused a depressive episode (two first-hand reports lasting weeks) ↗
Mechanism 1/3
Thought to modulate GABA-A receptors allosterically and inhibit enkephalin breakdown; no pathway to serious harm is known, and the rebound anxiety some describe is speculative benzodiazepine-like adaptation rather than a demonstrated effect. Volkova et al. 2016: Selank shifts GABAergic gene expression in rat cortex (PubMed 26924987) ↗
Data gap 1/3
Approved in Russia since 2009 as over-the-counter 0.15% nasal drops (label adverse reactions: allergy and bad taste), on small controlled trials of 60-70 patients over weeks; FDA found too little information to judge it. Selank 0.15% nasal drops, Russian label (Vidal) ↗Zozulia et al. 2008: Selank vs medazepam in GAD and neurasthenia, n=62 (PubMed 18454096) ↗FDA: bulk drug substances that may present significant safety risks (category 2 and withdrawn nominations) ↗
Silent harm 1/3
Reported harms (anxiety, agitation, low mood) are felt within hours or days, though the mood dips occasionally lingered for weeks after stopping. r/prefrontal: Selank caused a depressive episode (two first-hand reports lasting weeks) ↗
Product 2/3
Grey-market nasal sprays dominate the reports, with a large minority injecting research vials. Sciensano: Semax and Selank identified in seized online products (PubMed 31667971) ↗Mendias & Awan 2026 preprint: 6,441 grey-market peptide samples, 42-71% failed quality criteria, 15% had endotoxin ↗
Never if
Pregnancy or breastfeeding (label) · Under 18 (label)

Where to buy 12 in Europe · 17 total

ShopFormPricePer mgTesting
Semax PolskaEU · PLspray · 60 mg+5 mg GHK-CuExcluded€45€0.75/mgThird-party tested
Nootropic SourceUSpowder · 30 mg€3134.95 USD€1.05/mgOwn COA
Nootropic SourceUSspray · 40 mg€4550 USD€1.12/mgOwn COA
Nootropic SourceUSspray · 20 mg€2729.95 USD€1.35/mgOwn COA
Semax PolskaEU · PLspray · 20 mg+5 mg GHK-CuExcluded€27€1.36/mgThird-party tested
CertaPeptidesEU · ROpowder · 30 mgcontents not stated€100€3.33/mgThird-party tested
Baltic PeptidesEU · LTpowder · 10 mg€35€3.50/mgThird-party tested
CertaPeptidesEU · ROpowder · 10 mgcontents not stated€36€3.60/mgThird-party tested
Particle PeptidesEU · SKpowder · 10 mg€37€3.71/mgOwn COA
Baltic PeptidesEU · LTspray · 10 mgcontents not stated€40€4.00/mgThird-party tested
SwissChemsUSpowder · 5 mg€2325.95 USD€4.66/mgThird-party tested
Modern Peptides EUEU · DEpowder · 10 mg€48€4.80/mgOwn COA
Condor ResearchEU · SKpowder · 10 mg€50€5.00/mgNo public tests
Europa-PeptideEU · PLpowder · 10 mg€58€5.79/mgOwn COAout of stock
CertaPeptidesEU · ROpowder · 5 mgcontents not stated€30€6.00/mgThird-party tested
EuropeChemistEU · NLdrops · 4.5 mg€45€10/mgNo public testsout of stock
CosmicNootropicRUdrops · 4.5 mg€5460 USD€12/mgNo public tests

Studies 5

Sources 4

More in Mood & anxiety all 5 →

  1. 1GB-115 GW (2 residues) Caution Nasal / Sublingual / Oral≈ €22–54 / month57%positive41 reportsDipeptide-like CCK-receptor blocker; daytime anxiolytic without sedation or blunting.
  2. 2Oxytocin (intranasal) CYIQNPCLG (9 residues) Caution Nasal≈ €27–90 / month52%positive50 reportsBrief social warmth and lower social anxiety; subtle, short-lived for most.
  3. 3N-Acetyl Selank Amidate TKPRPGP (7 residues) Caution Nasal / Injection≈ €27–72 / month48%positive21 reportsStabilised, stronger Selank variant for anxiety; less data, more side reports.
  4. 4PE-22-28 GVSWGLR (7 residues) Excluded Nasal / Injection≈ €36–140 / month54%positive29 reportsTREK-1-blocking spadin fragment; fast-acting antidepressant in mice.No human data, and it blocks a channel whose loss makes animals more prone to seizures and ischaemic injury.

Sequence beads

Each bead is one amino acid in the peptide's chain, coloured by its side chain: grey for non-polar, cyan for polar, blue for positively charged and fuchsia for negatively charged. Length and mix tell related peptides apart at a glance, from a two-residue dipeptide like carnosine to a 43-residue protein like thymosin beta-4. The colours describe chemistry only and predict neither effect nor safety.

non-polarpolarpositivenegative

Report grades

Every first-hand Reddit or X report is graded on its own, from glowing through positive, mixed, nothing and negative to bad reaction, and the bar shows how those grades split. Posts that look vendor-adjacent stay on the peptide's page but are left out of the counts.

GlowingPositiveMixedNothingNegativeBad reaction

% positive

The share of a peptide's graded Reddit and X reports that are glowing or positive, vendor-adjacent posts left out. A peptide with few reports is pulled toward the average of all reports, as if it had eight average ones besides its own, so two glowing posts cannot top the list. Kept peptides rank by the same reports' mean grade, shrunk the same way, and excluded ones follow in that order.

Researcher estimate

No first-hand report of this peptide has been graded yet, so the figure is the researchers' own rating out of 10 from what they read about it. It ranks alongside the computed scores until reports arrive.

Safety tier

Each peptide is tiered clean, caution or excluded from its five risk axes under the chosen safety bar. An excluded peptide has a plausible route to serious harm, so it stays listed with the reason but ranks behind every other entry, however good its reviews.

Safety bar

The safety bar sets how much risk it takes to exclude a peptide. Strict: out on any serious mechanism with little human data, or any documented serious harm. Balanced: out on documented serious harm (unless it is obvious, reversible and from a regulated product), or a serious mechanism whose harm would be silent with no human data at all. Evidence only: out only on documented serious harm in humans that is lasting, delayed or from grey-market product.

Seen harm

Documented serious adverse events in humans, from 0 for none despite real exposure to 3 for deaths or several well-documented serious harms. Serious means a hospital or emergency visit or harm lasting weeks, so a headache or a bad night does not count.

Mechanism

A plausible biological route to serious harm at the doses people use, such as growth-factor signalling, hormone-axis suppression, heart or blood-pressure effects or immune activation. It runs from 0 when none is known to 3 when a dangerous pathway has been shown in living animals.

Data gap

How little human safety data exists for the molecule actually sold, from 0 for an approved drug with large trials and years of use to 3 for no human safety data at all. A modified analogue does not inherit its parent's trials.

Silent harm

Whether the feared harm would show quickly or stay hidden, from 0 when it is obvious and goes on stopping to 3 when it is silent and delayed, like tumour promotion or slow organ damage. User reports cannot reveal a harm that takes years to appear, so a high score here limits what good reviews can tell you.

Product

The risk of what people actually buy, from 0 for a regulated pharmacy or supplement product taken by mouth or on the skin to 3 for a grey-market injectable. In one dataset of 6,441 grey-market samples, 42–71% failed basic quality criteria and 15% carried endotoxin.

Evidence

The strongest kind of study behind the peptide's effects, from an approved drug through human controlled trials and small human studies to animal work or nothing of its own. Animal results often fail to carry over to people.

Access

How people get it: as an approved drug, a compounded prescription, an over-the-counter supplement or from the grey market, where nobody checks the vial. The channel decides both the legal position and the risk of a bad batch.

Price per month

Thirty days of the typical dose, from its low end to its high end, priced at the listing a careful buyer would choose: in stock, from a shop scoring 4 of 5 on trust (third-party tested where no score is set), failing that 3, a pure pack before a blend, a European shop first, then the cheapest per mg. The range is the dose's, not the shops'. A per-dose amount counts once a day unless the dose says otherwise. Prices are in euros at ECB rates of 2026-10-29, before shipping; the shop table keeps each listing's price per mg, per gram for bulk supplements. Where no listing can be priced the researchers' own estimate stands in, and says so.

Dose users report

The middle half of the daily doses stated in at least five first-hand reports, vendor posts left out. Where its middle sits more than twice above or below the declared dose, the month is priced at it as well, since what people take is what they pay for.

Testing

Whether the shop publishes lab results: third-party tested means an independent lab checks each batch, own COA means the shop's own certificate of analysis, and no public tests means neither. A certificate shows purity, not safety.

Added peptide

Some packs sold under one peptide's name hold a second one, such as 5 mg GHK-Cu in a nasal kit, stated only in the description. Sprayed in the nose or injected it reaches the blood like an injection, so it carries the risk of that route and is tiered as the injectable form, whatever its tier on the skin. A pack whose page gives no contents list may hold more than its name.