Biohacking Peptides: What the Research Actually Shows About the Compounds Everyone Is Talking About
A researcher's map of the compounds the biohacking world talks about most, from mitochondrial microproteins to the Russian bioregulators, with the strongest published study behind each one and a practical guide to telling signal from n…
On this page
- What Does the Biohacking World Actually Mean by "Peptides"?
- Energy First: The Mitochondrial Compounds
- The Bioregulators: A Russian Research Programme Most People Have Never Heard Of
- Repair: The Two Names That Come Up Most
- Skin, Collagen and a Copper Tripeptide
- Metabolism, and the Exercise-Mimetic Question
- Sleep Was Where the Self-Trackers Started
- Two Moscow Peptides That Came by a Different Route
- Telling Signal From Noise: Five Questions That Sort Most Claims
- The Technical Breakdown: Microproteins, Short Sequences and Why the Labels Are a Mess
- Testing Compounds Whose Published Record Is Short
- Related Compounds and Reading
- Common Questions About Biohacking Peptides
- The Interesting Part Is Still Ahead of This Field
- References
In 2015, a laboratory in Los Angeles reported that it had found a hormone hiding inside mitochondrial DNA. The stretch of genome it came from was meant to code for a piece of ribosomal machinery, not a signalling molecule, yet tucked inside it was a short reading frame for a 16-amino-acid peptide. They called it MOTS-c, and in mice it turned on AMPK, the switch a cell throws when its energy runs low, and the animals did not develop the obesity or the age-related loss of insulin sensitivity their diet and their age would normally have produced (PMID: 25738459). Within a few years you were as likely to hear MOTS-c on a podcast as in a seminar room. It is one of about a dozen compounds in our Ageing & Cellular research peptides range that the biohacking world argues over, and the gap between what that paper measured and what the internet made of it is the subject of this guide.
"Biohacking peptides" is a culture term rather than a scientific one, and it covers a genuinely mixed bag: mitochondrial microproteins, very short Russian peptides, tissue-repair compounds, metabolic small molecules and a couple of nootropics. This guide explains where the idea came from, groups the compounds people keep asking about, gives each its strongest published finding, then spends real time on the most useful skill in the field: telling signal from noise. MOTS-c Research Peptide, SS-31 Research Peptide and Epitalon Research Peptide are the three you will meet first. One thing to settle before any of the science: everything Crown Peptides supplies is laboratory material, sold for research use only, and what follows is the published record rather than advice.
What Does the Biohacking World Actually Mean by "Peptides"?
Where the idea came from
Biohacking grew out of the self-tracking scene of the late 2000s. The phrase "quantified self" was coined in 2007 by Gary Wolf and Kevin Kelly, two writers central to the launch of Wired, working out of the San Francisco Bay Area, and by 2009 self-tracking was being reviewed in the academic literature as a new category of patient-driven health service (PMID: 19440396). The instinct was simple: measure yourself, change one variable, measure again.
That instinct is not unscientific, and it is worth saying so plainly. Stanford's Russell Poldrack ran that design on himself and published it: the MyConnectome project put one person through 18 months of brain imaging, psychological testing, gene expression and metabolomics and found swings in brain connectivity over days and months that averaging across a hundred people would have hidden (PMID: 26648521). An n-of-1 study, done properly, is a real study. What it cannot do is establish what a compound does, because one observer with no control group, no blinding and a personal stake in the outcome is the arrangement in which expectation effects are largest. So the useful question is never "did someone report something?" but "what did the controlled work find, in what species, at what level of evidence?" That question organises everything below; our Best Peptides for Longevity Research overview goes deeper on the ageing side than this umbrella piece can.
Why peptides fitted the mindset so neatly
Peptides arrived into that culture looking tailor-made for it: specific, in that a short chain binds one receptor or one enzyme rather than flooding the system; mechanistic, in that you can read the pathway in an afternoon; and mostly borrowed from the body's own signalling vocabulary rather than invented from scratch, which makes the science feel approachable. Our guide What Are Peptides? covers the class as a whole.
The awkward part: several of them are not peptides
A good number of the compounds that dominate this conversation are not peptides at all. Methylene blue is a phenothiazine dye. NAD+ is a dinucleotide coenzyme. AICAR is a nucleoside that cells convert into a mimic of AMP, SLU-PP-332 a synthetic nuclear-receptor agonist, and 5-Amino-1MQ a methylquinolinium small molecule. They are grouped with peptides because they share the same research territory, not because they share a chemistry — which is why each of them also carries our Compounds label alongside the research area it belongs to.
- Groups used in this guide
- Mitochondria and energy; bioregulators; tissue repair; skin and collagen; metabolism; sleep and body clock; cognition
- Where the evidence sits
- Mostly cell and rodent work
- Most common error
- Reading a cell or mouse result as though it were a human one
Energy First: The Mitochondrial Compounds
If the biohacking world has one founding belief, it is that energy comes first and mitochondria decide it. This is the busiest corner of the field and the one with the strongest research record. Our Mitochondrial Peptides Explained article has the family in depth; here is the short version.
MOTS-c, the peptide the mitochondria write themselves
MOTS-c is encoded inside the mitochondrial genome, in a short open reading frame within the 12S ribosomal RNA gene; eight such microproteins had been published by 2022, humanin, MOTS-c and SHLPs 1 to 6 (PMID: 35499074). The rodent result that made its name: it enhanced physical performance in mice at 2, 12 and 22 months of age, and intermittent administration begun at 23.5 months increased physical capacity and healthspan. The same paper found that in humans, exercise itself raises natural MOTS-c levels in skeletal muscle and in the blood (PMID: 33473109) — the detail that turned it from a curiosity into the compound this field talks about. Our MOTS-c guide follows it through to the human work.
It had a predecessor. In 2001, a Tokyo group screening for genes that rescued neurons from familial Alzheimer's disease mutations pulled out a short polypeptide they named humanin (PMID: 11371646), later shown to be encoded in the mitochondrial genome — which is what sent people looking for a second (PMID: 25738459).
SS-31, and a Phase 3 trial worth knowing about
SS-31 works differently. Rather than signalling, it concentrates in the inner mitochondrial membrane and binds cardiolipin, the phospholipid that holds the cristae in shape and organises the respiratory complexes, protecting it from the peroxidation seen in energy-deficient states (PMID: 24117165). As the medicine elamipretide, it reached a pivotal Phase 3 trial in primary mitochondrial myopathy, MMPOWER-3, which randomised 218 participants over 24 weeks and met neither primary endpoint: the difference from placebo in six-minute walk distance was −3.2 metres (p=0.69) and the fatigue score difference was −0.07 (p=0.37), with the compound well tolerated (PMID: 37268435). In the much rarer Barth syndrome it looked different: ten people entered the open-label extension of TAZPOWER and eight reached week 168, with a cumulative 96.1-metre improvement in walk distance (p=0.003), though with no concurrent control group (PMID: 38602181). Hold both halves of that in your head at once; Elamipretide: How the SS-31 Peptide Became an Approved Medicine and our SS-31 guide follow each of them.
Methylene blue, the 19th-century dye
Methylene blue is the oldest compound here. It can shuttle electrons in and out of the respiratory chain, and in cultured human IMR90 fibroblasts it extended replicative lifespan by more than 20 population doublings while raising mitochondrial complex IV by 30% and cellular oxygen consumption by 37 to 70% (PMID: 17928358). What happened when the same compound was tested for lifespan in mice is in the signal-and-noise section below, because it is the most instructive result in this guide. We stock it as Methylene Blue 1% Solution (USP Grade), and its unlikely journey from dye vat to mitochondrial research is told in Methylene Blue and Mitochondria and Methylene Blue: The 19th-Century Dye That Became a Mitochondrial Research Tool.
NAD+, the coenzyme everything else runs through
NAD+ is the coenzyme that sirtuins, PARPs and CD38 all consume, and its levels fall with age in a way linked to defects in both nuclear and mitochondrial function (PMID: 24786309). The part of its story that belongs on this page is the human evidence, because there is some, and because it comes from a precursor rather than NAD+ itself: a two-by-six-week randomised, double-blind, placebo-controlled crossover trial of nicotinamide riboside in healthy middle-aged and older adults found it well tolerated and effective at stimulating NAD+ metabolism (PMID: 29599478) — one of very few controlled human datasets in this list. For the decline curve we have two dedicated pages, the NAD+ guide and NAD+ Levels by Age; NAD+ Research Compound is the compound in question.
The Bioregulators: A Russian Research Programme Most People Have Never Heard Of
Then there is a group that arrived from somewhere else entirely: very short peptides, two to four amino acids long, developed at the St Petersburg Institute of Bioregulation and Gerontology under Vladimir Khavinson. The literature is large, much of it in Russian, and most of it has not been replicated outside that programme — worth saying plainly, because it changes how you read the findings rather than cancelling them. Our full account is Bioregulator Peptides Explained, and they have their own Bioregulators category.
Epitalon, the tetrapeptide behind the telomere claims
Epitalon is Ala-Glu-Asp-Gly, four amino acids, and the claim that made its name is about telomeres: in telomerase-negative human fetal fibroblasts it induced expression and activity of the telomerase catalytic subunit and elongated them (PMID: 12937682). A cell line is a long way from an organism, and the rest of the programme is laid out study by study in our Epitalon guide. Crown supplies the peptide as Epitalon Research Peptide.
Pinealon, a tripeptide that seems to reach the genome
Pinealon is Glu-Asp-Arg, three amino acids. The most recent work on it is also the most interesting in how it was done: neurons grown from the skin fibroblasts of elderly donors, tested with Glu-Asp-Arg alongside Lys-Glu-Asp and Ala-Glu-Asp-Gly, where all three increased dendrite branching and total dendrite length and Glu-Asp-Arg reduced oxidative DNA damage (PMID: 39518916). Ageing human cells rather than an immortalised line is a harder test than much of this field sets itself. The oxidative-stress studies and the proposed mechanism sit in Pinealon: The Three-Amino-Acid Peptide That Talks Directly to Neuronal DNA, next to Pinealon Research Peptide.
Thymalin and Cartalax, the tissue-specific ones
Two more from the same programme are aimed at particular tissues: Thymalin Research Peptide at the immune system (our Thymalin guide) and Cartalax Research Peptide, the tripeptide Ala-Glu-Asp, at cartilage (our Cartalax guide).
Repair: The Two Names That Come Up Most
Ask anyone in this world to name a peptide and you will hear one of two answers, neither to do with ageing.
BPC-157
BPC-157 is a 15-amino-acid fragment of a protein sequence identified in human gastric juice, and the bulk of its record is rodent tissue-repair work. One mechanistic study, done on cultured rat tendon rather than in live animals, shows how that record was built: BPC-157 significantly accelerated fibroblast outgrowth from Achilles tendon explants, increased their survival under hydrogen peroxide stress, and increased migration and spreading dose-dependently, with more phosphorylation of FAK and paxillin (PMID: 21030672). BPC-157 Research Peptide is listed under four research areas at once, a clue to how broadly it has been studied; our BPC-157 guide works through that literature.
TB-500 (thymosin beta-4)
TB-500 is the active region of thymosin beta-4, an actin-sequestering peptide with a long cell-biology pedigree. In a rat full-thickness wound model it increased re-epithelialisation by 42% at four days and by as much as 61% at seven, against saline controls, with wounds contracting at least 11% more by day seven (PMID: 10469335). A 2004 Nature paper then found it formed a complex with PINCH and integrin-linked kinase, activating Akt, and improved cardiac function in mice after coronary artery ligation (PMID: 15565145). Anyone weighing the two against each other should start with BPC-157 vs TB-500, which is the shorter read; our TB-500 guide has the full record behind TB-500 (Thymosin Beta-4) Research Peptide.
Skin, Collagen and a Copper Tripeptide
Repair research has one awkward feature: nobody can watch a tendon heal. The next group is the opposite, and the only part of this field whose compounds already sit on high-street shelves, which is why its literature is deeper. GHK is glycyl-L-histidyl-L-lysine, a tripeptide found naturally in human serum, where levels average around 200 ng/ml at age 20 and fall to around 80 ng/ml by 60. It binds copper with very high affinity to form the GHK-Cu chelate — the form we supply as GHK-Cu Research Peptide — which has been studied for skin remodelling, wound repair and anti-inflammatory activity in cell and animal work (PMID: 35083444). That falling concentration with age is why it keeps appearing in longevity conversations and not only cosmetic ones. Our GHK-Cu guide and What Are the Best-Researched Peptides for Skin, Hair and Nails? cover the rest.
Metabolism, and the Exercise-Mimetic Question
The provocative idea here is the exercise mimetic: a molecule that switches on some of the machinery exercise does. It is a real research programme with real papers, and the idea most often oversold. Our Best Peptides for Weight Loss Research article maps the area; all four below sit in our Metabolic Research Peptides category.
5-Amino-1MQ
This one blocks NNMT, an enzyme that consumes nicotinamide and runs high in the liver and white fat of obese and diabetic animals (PMID: 38919254). In the study that validated the target, a potent membrane-permeable NNMT inhibitor reduced body weight, white fat mass and fat cell size in diet-induced obese mice without changing how much the animals ate (PMID: 29155147). Fat going down with food intake unchanged is what put 5-Amino-1MQ Research Compound on so many lists, and 5-Amino-1MQ: Blocking the Enzyme That Tells Fat Cells to Store explains the enzyme it blocks.
AOD-9604
AOD-9604 is a modified fragment from the tail end of the growth hormone chain, built to keep the fat-metabolism activity and leave the growth-promoting part behind. Over 14 days in obese mice it reduced body weight and body fat and pushed suppressed expression of the beta-3 adrenergic receptor, the main fat-releasing receptor on fat cells, back towards lean levels (PMID: 11713213). AOD-9604 Research Peptide is that fragment, and AOD-9604: The Fragment of Growth Hormone Built to Do Just One of Its Jobs tells how it was carved out.
SLU-PP-332 and AICAR
These two are the literal exercise mimetics. SLU-PP-332 activates the estrogen-related receptors; in diet-induced obese and ob/ob mice it increased energy expenditure and fatty acid oxidation and reduced fat mass accumulation (PMID: 37739806), as our SLU-PP-332 guide explains. AICAR activates AMPK directly, and the result that made its name is blunt: four weeks of it raised treadmill running endurance by 44% in sedentary mice, with no training at all (PMID: 18674809), covered in our AICAR guide. Both are small molecules rather than peptides, supplied as SLU-PP-332 Research Compound and AICAR Research Compound.
Sleep Was Where the Self-Trackers Started
Sleep is the easiest thing in the body to measure at home, so a sleep peptide was always going to make this list. DSIP was isolated from rabbits in the 1970s and sequenced as Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu, and when the synthetic version was compared under double-blind conditions against eight related peptides — shortened fragments, two altered nonapeptides and a tripeptide — in a total of 58 rabbits, only the full synthetic nonapeptide produced a significant, specific enhancement of delta and spindle EEG patterns (PMID: 265572). Half a century on, the human record is still thin.
The other thread here runs back to Epitalon, which is why the two are so often packed together. In 38 female rhesus macaques, Epitalon — like the older pineal extract it came from — raised night-time plasma melatonin in the twenty old animals aged 20 to 26, with no change in the young group (PMID: 14743609). Our Sleep & Circadian Research Bundle x 8 Vials (Epitalon 50mg / Pinealon 10mg / DSIP 10mg) puts all three in one pack, Best Peptides for Sleep Research and the DSIP guide work through the evidence, and DSIP on its own is DSIP Research Peptide.
Two Moscow Peptides That Came by a Different Route
That leaves the part of the list with nothing to do with the body below the neck. Semax and Selank came out of Moscow laboratories and reached this conversation through the Russian nootropic literature rather than Silicon Valley, which is why they sit oddly next to the rest. Semax is a seven-amino-acid analogue of the ACTH(4-10) fragment, and the finding most often quoted is from rat hippocampus: a single administration produced a maximal 1.4-fold rise in BDNF protein and a 1.6-fold rise in trkB phosphorylation, alongside a distinct increase in conditioned avoidance reactions in the same animals (PMID: 16996037).
Selank has unusually direct human data for this field: a Russian comparison study in 60 patients with phobic-anxiety and somatoform disorders reported a pronounced anxiolytic effect alongside a mild nootropic one, which the authors described as persisting for about a week afterwards (PMID: 25176261). Semax Research Peptide and Selank Research Peptide come separately or together as Semax + Selank (Blend), all three in our Neurocognitive Research Peptides category; the Semax guide, the Selank guide and Best Peptides for Brain Research cover them properly.
Telling Signal From Noise: Five Questions That Sort Most Claims
This is the part that transfers. Every compound above will be joined by three more next year, and these questions work on all of them.
What can a cell study actually tell you?
A great deal about mechanism and almost nothing about outcome. In a dish you set the concentration exactly, the compound never meets a liver or a kidney, and it crosses no barrier to reach its target. Methylene blue's 20-plus extra population doublings in fibroblasts (PMID: 17928358) is a well-measured finding about what redox cycling does to a cultured cell. It is not a finding about an animal, let alone a person. Read a cell result as a hypothesis with a mechanism attached.
Why does mouse lifespan data so rarely carry over?
Here is the result that should be printed inside every longevity enthusiast's notebook. The US National Institute on Aging's Interventions Testing Program was built to catch false positives: the same compound at three independent sites, in genetically heterogeneous mice rather than one inbred strain, with enough animals to see a real effect. When it tested methylene blue alongside three other agents, methylene blue did not change median lifespan in males or females at all. It produced a 6% increase in female maximum lifespan, and nothing more. Acarbose, in the same programme, increased male median lifespan by 22% but female median lifespan by only 5%, and 17-alpha-estradiol extended male lifespan by 12% while doing nothing in females (PMID: 24245565).
Read that again: a striking cell result need not survive a whole animal, effects can be entirely sex-specific, and the same compound can look different at different sites. The programme's most famous positive, rapamycin fed from 600 days of age, raised lifespan at 90% mortality by 14% in females and 9% in males across all three sites (PMID: 19587680) — which is what a solid mouse lifespan result looks like: modest, replicated, and still only a mouse.
What is an unpublished company claim worth?
Read it as a pointer, not a finding. A datasheet tells you what a developer believes and has chosen to disclose; it does not let you check the method, the group sizes or the things that did not work. Note what it claims, then look for the peer-reviewed paper or the trial registration behind it. If neither exists yet, that is a reason to watch the compound, not to call it established.
Does a negative trial sink a compound?
No, but it should change what you say about it. MMPOWER-3 is the cleanest example in this field: a properly powered Phase 3 trial that missed both primary endpoints (PMID: 37268435), in a compound whose cardiolipin mechanism is well described (PMID: 24117165) and whose Barth syndrome extension looked far more encouraging (PMID: 38602181). All three are true at once. A compound can have a real mechanism, a real signal in a narrow population and a failed trial in a broader one, and quoting only one of the three is how the biohacking conversation and the scientific one drift apart.
Why does batch identity matter most when the record is short?
Because with a well-studied molecule you can sanity-check a result against decades of reference data, and with a new one you cannot. A wrong molecule, a truncated sequence or a mislabelled analogue will not be caught by a literature that is not there yet, which makes mass spectrometry a practical argument rather than a philosophical one. See How to Tell If Peptides Are Real and Are Peptides Safe?
The Technical Breakdown: Microproteins, Short Sequences and Why the Labels Are a Mess
Why four kinds of molecule ended up under one label
Nothing in the chemistry explains this grouping. The history does. Three were found by people hunting for signalling molecules (MOTS-c, humanin, GHK). Two were designed against a structural target rather than a receptor: SS-31 against the inner mitochondrial membrane, FOXO4-DRI against the FOXO4-p53 interface. Three are enzyme or receptor tools borrowed from drug discovery (5-Amino-1MQ, SLU-PP-332, AICAR). One is a coenzyme every cell already makes (NAD+), one a dye first made for the textile trade in the 1870s (methylene blue). What they share is a question and a supply chain, which is why "peptide", here, is better read as a subject heading than a chemical claim.
Why the Khavinson sequences are so unusual
Most signalling peptides need enough length to fold into a shape a receptor can read (see What Is a Peptide Bond? for how the chains are built); Epitalon is four residues and Pinealon three, far too short. The explanation offered in the Russian literature is different in kind — that these sequences act inside the cell and interact with DNA directly (PMID: 21978084) — and Bioregulator Peptides Explained sets out that argument and its limits.
Senescent cells, and a peptide designed to argue with a protein
One compound in this range fits none of the groups above. FOXO4-DRI disrupts the FOXO4-p53 interaction senescent cells rely on to avoid apoptosis; in the paper that introduced it, it caused p53 nuclear exclusion and selective apoptosis in senescent cells and restored fitness, fur density and renal function in fast-ageing XpdTTD/TTD mice and naturally aged mice (PMID: 28340339). Our FOXO4-DRI guide sits beside FOXO4-DRI Research Peptide.
Testing Compounds Whose Published Record Is Short
That structural variety is why identity testing earns its place here. A four-residue sequence, a 16-residue microprotein, a copper chelate and a phenothiazine dye all fail in different ways, and a mass measurement is the quickest thing that tells a correct short sequence from a plausible wrong one.
It matters more here than almost anywhere, for the reason the last section gave: when a compound has six papers to its name, the literature cannot catch a mistake for you. So every batch is weighed and measured before it goes on sale — mass spectrometry to confirm the molecule is the one on the label, HPLC to say how much of the batch is that molecule — and the certificate goes up on our Lab Reports page under the batch number printed on your vial, so the two can be matched without taking anyone's word for it. How to Read a Peptide Certificate of Analysis goes through one line by line, and Peptide Testing UK explains why purity and identity answer two different questions.
The practical side: vials go out freeze-dried, held cold and sealed, with handling covered on our storage information page. Anything ordered before 2pm on a weekday leaves the same day, UK delivery costs nothing past £100, and there is a person at the other end of our contact page — usually inside 24 hours on a working day, quicker on WhatsApp.
Related Compounds and Reading
The groups above are a map, not a boundary.
Other routes into cellular energy
L-Carnitine (LC216) Research Compound carries fatty acids in to be burned (our L-Carnitine article); Glutathione Research Peptide sits at the centre of the cell's redox defences (Why Glutathione Is Known as the Body's Master Antioxidant). The best head-to-heads are SS-31 (Elamipretide) vs MOTS-c and Epitalon vs NAD+.
Combinations, and why they are designed the way they are
Combining compounds has its own logic: different pathways, different time courses, one measurable outcome, and Peptide Stacking in Research sets out how that is done. The ready-made examples are the Metabolic Research Bundle x 9 Vials (MOTS-c 10mg / 5-Amino-1MQ 50mg / AOD-9604 5mg), discussed in Three Peptides, One Metabolic Pathway, and the Dermal & Cellular Research Bundle x 9 Vials (GHK-Cu 50mg / KPV 10mg / Glutathione 1500mg).
Where these compounds sit in the range
One practical note: where all this sits in the shop. MOTS-c, SS-31, NAD+, methylene blue, Epitalon, Pinealon, GHK-Cu, 5-Amino-1MQ, AICAR, SLU-PP-332, Thymalin, Cartalax and FOXO4-DRI all sit in our Ageing & Cellular research peptides category, and the four Khavinson sequences also appear under Bioregulators. BPC-157 and TB-500 sit elsewhere. BPC-157 is listed under gut, immunology, musculoskeletal and tissue biology research; TB-500 under immunology, musculoskeletal and tissue biology. That spread tells you something about how differently they are studied.
Common Questions About Biohacking Peptides
What are biohacking peptides?
A popular label rather than a scientific category. In practice it covers the compounds most discussed in self-experimentation and longevity circles: mitochondrial microproteins such as MOTS-c and SS-31, short Russian bioregulators such as Epitalon and Pinealon, repair peptides such as BPC-157 and TB-500, the copper tripeptide GHK-Cu, metabolic molecules such as 5-Amino-1MQ, AOD-9604, SLU-PP-332 and AICAR, DSIP for sleep, Semax and Selank for cognition.
Which of these are not actually peptides?
Methylene blue (a phenothiazine dye), NAD+ (a dinucleotide coenzyme), AICAR (a nucleoside cells convert into a mimic of AMP), SLU-PP-332 (a synthetic nuclear-receptor agonist) and 5-Amino-1MQ (a methylquinolinium small molecule) — all here for the research territory, not the chemistry.
Which of them has the strongest published record?
Judged on evidence quality rather than volume of discussion, the leaders are the two that reached registered trials in people: elamipretide, the medicine form of SS-31, and nicotinamide riboside on the NAD+ side. For rodent work, MOTS-c and thymosin beta-4 have the deepest literatures.
Why are so many of these studies done in mice and cells?
Because that is where the field currently is. Several of these compounds were only identified this century, and for the older ones nobody ever took the compound through the expensive end of the process, because human trials are slow and usually funded only once a commercial developer takes a compound on. The useful habit is to read the species in every claim: the difference between "in cultured fibroblasts", "in mice" and "in 218 randomised participants" is the most informative thing about any statement in this area.
Do peptide combinations make sense in research?
They can, when the compounds act through genuinely different pathways and the experiment is designed to tell their contributions apart. They make much less sense as hedging, because a combination makes a result harder to attribute, not easier. Peptide Stacking in Research works through how this is handled.
Are peptides legal in the UK?
Research peptides can be bought and held in the UK for laboratory work, and Crown Peptides is a UK company dispatching from the UK. The detail depends on the compound; Are Peptides Legal in the UK? sets that out, and our explainer on what that label means covers the label itself.
How can a researcher check what is actually in a vial?
By reading the batch certificate rather than the product description, and checking that it carries the same batch number as the vial in your hand. How to Read a Peptide Certificate of Analysis breaks one down; every Crown batch certificate sits on our Lab Reports page.
The Interesting Part Is Still Ahead of This Field
The honest summary of biohacking peptides is that the curiosity is well placed and the certainty is not. Mitochondria really do write their own signalling peptides. Four-amino-acid sequences really do appear to do something in cells. A molecule really can raise a mouse's running endurance by 44% without the mouse running anywhere. None of that is hype, and none of it amounts yet to what the louder parts of the internet say it does.
What will change it is not a better argument but better studies: replication outside the original laboratory, whole animals rather than dishes, both sexes, pre-specified endpoints. Several of the compounds above sit at exactly that threshold, which makes this a good moment to be working on them rather than only reading about them. If that is where your own work is heading, start with our Ageing & Cellular research peptides range.
References
- Lee C, Zeng J, Drew BG, et al. The mitochondrial-derived peptide MOTS-c promotes metabolic homeostasis and reduces obesity and insulin resistance. Cell Metab. 2015;21:443-54. PMID: 25738459
- Reynolds JC, Lai RW, Woodhead JST, et al. MOTS-c is an exercise-induced mitochondrial-encoded regulator of age-dependent physical decline and muscle homeostasis. Nat Commun. 2021;12:470. PMID: 33473109
- Hashimoto Y, Niikura T, Tajima H, et al. A rescue factor abolishing neuronal cell death by a wide spectrum of familial Alzheimer's disease genes and Abeta. Proc Natl Acad Sci U S A. 2001;98:6336-41. PMID: 11371646
- Miller B, Kim SJ, Kumagai H, et al. Mitochondria-derived peptides in aging and healthspan. J Clin Invest. 2022;132. PMID: 35499074
- Szeto HH. First-in-class cardiolipin-protective compound as a therapeutic agent to restore mitochondrial bioenergetics. Br J Pharmacol. 2014;171:2029-50. PMID: 24117165
- Karaa A, Bertini E, Carelli V, et al. Efficacy and Safety of Elamipretide in Individuals With Primary Mitochondrial Myopathy: The MMPOWER-3 Randomized Clinical Trial. Neurology. 2023;101:e238-e252. PMID: 37268435
- Thompson WR, Manuel R, Abbruscato A, et al. Long-term efficacy and safety of elamipretide in patients with Barth syndrome: 168-week open-label extension results of TAZPOWER. Genet Med. 2024;26:101138. PMID: 38602181
- Atamna H, Nguyen A, Schultz C, et al. Methylene blue delays cellular senescence and enhances key mitochondrial biochemical pathways. FASEB J. 2008;22:703-12. PMID: 17928358
- Harrison DE, Strong R, Allison DB, et al. Acarbose, 17-α-estradiol, and nordihydroguaiaretic acid extend mouse lifespan preferentially in males. Aging Cell. 2014;13:273-82. PMID: 24245565
- Harrison DE, Strong R, Sharp ZD, et al. Rapamycin fed late in life extends lifespan in genetically heterogeneous mice. Nature. 2009;460:392-5. PMID: 19587680
- Martens CR, Denman BA, Mazzo MR, et al. Chronic nicotinamide riboside supplementation is well-tolerated and elevates NAD(+) in healthy middle-aged and older adults. Nat Commun. 2018;9:1286. PMID: 29599478
- Imai S, Guarente L. NAD+ and sirtuins in aging and disease. Trends Cell Biol. 2014;24:464-71. PMID: 24786309
- Khavinson VKh, Bondarev IE, Butyugov AA. Epithalon peptide induces telomerase activity and telomere elongation in human somatic cells. Bull Exp Biol Med. 2003;135:590-2. PMID: 12937682
- Goncharova ND, Vengerin AA, Shmaliĭ AV, et al. [Peptide correction of age-related pineal disturbances in monkeys]. Adv Gerontol. 2003;12:121-7. PMID: 14743609
- Khavinson V, Ribakova Y, Kulebiakin K, et al. Pinealon increases cell viability by suppression of free radical levels and activating proliferative processes. Rejuvenation Res. 2011;14:535-41. PMID: 21978084
- Kraskovskaya N, Linkova N, Sakhenberg E, et al. Short Peptides Protect Fibroblast-Derived Induced Neurons from Age-Related Changes. Int J Mol Sci. 2024;25. PMID: 39518916
- Chang CH, Tsai WC, Lin MS, et al. The promoting effect of pentadecapeptide BPC 157 on tendon healing involves tendon outgrowth, cell survival, and cell migration. J Appl Physiol (1985). 2011;110:774-80. PMID: 21030672
- Malinda KM, Sidhu GS, Mani H, et al. Thymosin beta4 accelerates wound healing. J Invest Dermatol. 1999;113:364-8. PMID: 10469335
- Bock-Marquette I, Saxena A, White MD, et al. Thymosin beta4 activates integrin-linked kinase and promotes cardiac cell migration, survival and cardiac repair. Nature. 2004;432:466-72. PMID: 15565145
- Dou Y, Lee A, Zhu L, et al. The potential of GHK as an anti-aging peptide. Aging Pathobiol Ther. 2020;2:58-61. PMID: 35083444
- Sun WD, Zhu XJ, Li JJ, et al. Nicotinamide N-methyltransferase (NNMT): a novel therapeutic target for metabolic syndrome. Front Pharmacol. 2024;15:1410479. PMID: 38919254
- Neelakantan H, Vance V, Wetzel MD, et al. Selective and membrane-permeable small molecule inhibitors of nicotinamide N-methyltransferase reverse high fat diet-induced obesity in mice. Biochem Pharmacol. 2018;147:141-152. PMID: 29155147
- Heffernan M, Summers RJ, Thorburn A, et al. The effects of human GH and its lipolytic fragment (AOD9604) on lipid metabolism following chronic treatment in obese mice and beta(3)-AR knock-out mice. Endocrinology. 2001;142:5182-9. PMID: 11713213
- Billon C, Schoepke E, Avdagic A, et al. A Synthetic ERR Agonist Alleviates Metabolic Syndrome. J Pharmacol Exp Ther. 2024;388:232-240. PMID: 37739806
- Narkar VA, Downes M, Yu RT, et al. AMPK and PPARdelta agonists are exercise mimetics. Cell. 2008;134:405-15. PMID: 18674809
- Schoenenberger GA, Monnier M. Characterization of a delta-electroencephalogram (-sleep)-inducing peptide. Proc Natl Acad Sci U S A. 1977;74:1282-6. PMID: 265572
- Dolotov OV, Karpenko EA, Inozemtseva LS, et al. Semax, an analog of ACTH(4-10) with cognitive effects, regulates BDNF and trkB expression in the rat hippocampus. Brain Res. 2006;1117:54-60. PMID: 16996037
- Medvedev VE, Tereshchenko ON, Israelian AIu, et al. [A comparison of the anxiolytic effect and tolerability of selank and phenazepam in the treatment of anxiety disorders]. Zh Nevrol Psikhiatr Im S S Korsakova. 2014;114:17-22. PMID: 25176261
- Baar MP, Brandt RMC, Putavet DA, et al. Targeted Apoptosis of Senescent Cells Restores Tissue Homeostasis in Response to Chemotoxicity and Aging. Cell. 2017;169:132-147.e16. PMID: 28340339
- Poldrack RA, Laumann TO, Koyejo O, et al. Long-term neural and physiological phenotyping of a single human. Nat Commun. 2015;6:8885. PMID: 26648521
- Swan M. Emerging patient-driven health care models: an examination of health social networks, consumer personalized medicine and quantified self-tracking. Int J Environ Res Public Health. 2009;6:492-525. PMID: 19440396