The Journal
Plain-English guides to Semax, Selank and the honest state of nootropic evidence. No affiliate rankings, no miracle claims, every study cited.
What are peptides? Hormones, medicines, research vials and nootropics
Short chains of amino acids, and a word that now covers five different markets. The categories, what each does, and how they are taken.
Are peptides legal in the UK? The four categories explained
Prescription GLP-1s, research peptides sold 'not for human use', nootropic peptides sold as supplements, and the few that are controlled.
Are peptides safe? Side effects by category
Why the answer depends on the molecule, the source and the dose, and a five-point check before using any of them.
Research peptides in the UK: what 'not for human use' means
How the vial market works, how to read a certificate of analysis, and six questions for any supplier.
How to reconstitute peptides (and where to buy bacteriostatic water in the UK)
Water type, the method step by step, making a nasal spray, and the mistakes that waste a vial.
How to store peptides: powder, solution and finished sprays
Fridge or freezer, for how long, the signs of degradation, and travelling with them.
BPC-157 in the UK: evidence, legal status and why we don't sell it
The most searched research peptide: extensive animal data, almost no human trials, legal to possess, banned in sport.
GHK-Cu in the UK: the copper peptide with evidence on skin and none injected
What it is, the topical trials, the injectable claims, and its legal status.
GLP-1 peptides in the UK: semaglutide, tirzepatide and retatrutide
Prescription-only where licensed, unlicensed where not, and the most counterfeited medicines in the country.
Oral, nasal or injectable: how peptides get into the body
Why most are injected, why Semax and Selank are sprays, which few survive the gut, and a table by peptide.
Peptide therapy in the UK: regulated clinics vs vial resellers
How to tell licensed prescribing from research vials with a consultation fee, and the questions to ask.
Semax benefits: what it does, and what it doesn't
The four effects with data behind them, the claims that have none, and who gets the most from it.
How long does Semax take to work, and how long does it last?
Onset in 20 to 30 minutes, the peak window, and why one morning dose covers a working day.
Does Semax need to be refrigerated? Storage and shelf life
Powder, home-made solution and a finished spray each need different handling. Here is what lasts and for how long.
Semax 20mg vials vs a metered nasal spray: what the numbers mean
What the milligrams on a research vial mean, how reconstitution maths works, and where DIY sprays go wrong.
Semax vs N-Acetyl Semax Amidate, Adamax, Noopept and Cerebrolysin
The variants and the rivals, each against the original: what exists, what is studied, what is marketing.
What is Selank? A plain-English guide
Semax's sister peptide, built for stress and composure without sedation. Origins, evidence and how it is used.
Selank dosage, side effects and what to expect
Doses from the trials, a simple spray chart, the side effects reported, and the truth about withdrawal.
What are nootropics? The definition, the categories, and what counts
Giurgea's five rules, the five categories from caffeine to peptides, and how to tell a real one from marketing.
Brain fog supplements: what has evidence, what doesn't
The causes to rule out first, then creatine, caffeine, omega-3, Semax and Bacopa ranked honestly.
Best supplements for focus and concentration in the UK
Six things with real evidence, with doses and timescales, and the blends to skip.
How to use a nasal spray properly (so you get the full dose)
Head level, aim outward, gentle sniff. The ten-second technique and the four mistakes that waste half the dose.
Peptide nasal sprays explained: why peptides go up the nose
Why a capsule would not work, how the nasal route reaches the brain, and what a good peptide spray needs.
BDNF: what it is, why it matters for learning, and how to raise it
The brain's growth signal, what raises it (exercise, sleep, Semax) and why there is no BDNF supplement as such.
How to beat the afternoon slump without a third coffee
Why the 3pm crash happens and five fixes ranked by evidence, from lunch to a morning dose that lasts the day.
What Reddit says about Semax: a sober read
Where r/Nootropics experience matches the research, where it goes beyond it, and how to read a thread.
What is Semax? A plain-English guide
Where the peptide came from, what it does in the brain, and what thirty years of research actually measured.
Semax dosage: how much, when, and how long it lasts
The doses used in the studies, how a metered spray maps onto them, timing before focused work, and storage.
Semax side effects and safety: what the research says
What has been reported, what has not, who should avoid it, and why it is not a stimulant.
Semax vs Selank: which one, and can you use both?
Two peptides from the same lab with different jobs. How they differ, and how FOCUS-01 and CALM-02 fit a day.
Is Semax legal in the UK?
The short answer, the longer one, and what it means for buying and using a Semax nasal spray in Britain.
The best nootropics in the UK: an honest ranking
Caffeine, L-theanine, creatine, peptides and the rest, ranked by the strength of the evidence rather than the marketing.
Every claim, cited
The papers behind every article are listed and linked on the research page, including where the evidence is thin.