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peptheon.
ΘSolo investigación

Investigación.

Lo que la literatura publicada informa sobre los compuestos de nuestro catálogo: el ensayo, la cifra, la fuente. Cada afirmación está atribuida; nada de esto es consejo médico ni un protocolo de uso en personas.

Ibutamoren (MK-677): the oral secretagogue with a two-year human trialSecretagogues

Ibutamoren (MK-677): the oral secretagogue with a two-year human trial

Most compounds in this catalog have no human data at all. This one has three randomised trials: a pulse study from 1996, an obesity study from 1998, and a two-year trial in 65 older adults that added fat-free mass without moving visceral fat. The numbers, exactly as published.

30 de septiembre de 2026 · 3 min de lectura
Liver support pens: reading the label against the literatureMetabolic

Liver support pens: reading the label against the literature

Two multi-ingredient liver pens, opened up component by component. Silymarin has a Cochrane review that reads against it, NAC has a poisoning antidote trial that does not transfer, and the finished blends have no trial at all.

29 de septiembre de 2026 · 5 min de lectura
BPC-157 in tendon research: what the rat studies actually showRepair

BPC-157 in tendon research: what the rat studies actually show

Tendon models are the core of the BPC-157 animal literature, and a 2025 systematic review put the field's ratio at 35 preclinical studies to 1 clinical study. This page stays inside that ratio.

28 de septiembre de 2026 · 2 min de lectura
HCG and enclomiphene: what the fertility trials actually studiedHormonal

HCG and enclomiphene: what the fertility trials actually studied

Two compounds, four published studies, and a hard boundary: the literature describes what was measured in enrolled patients — intratesticular testosterone, sperm counts, pregnancies — not a protocol for anyone else. This article stays on the published side of that line.

28 de septiembre de 2026 · 4 min de lectura
HGH vs peptides: somatropin and the secretagogues, compared on the evidenceGH axis

HGH vs peptides: somatropin and the secretagogues, compared on the evidence

One is the hormone itself, approved since the 1980s for defined deficiency states. The others ask the pituitary to release more of it — and have one small trial, one PK study, or a single approval between them. The comparison searchers want has never actually been run.

28 de septiembre de 2026 · 3 min de lectura
Melanotan 2: three small trials, no approval — and the relative that got oneHormonal

Melanotan 2: three small trials, no approval — and the relative that got one

The entire human literature on Melanotan 2 is three trials in 23 men, run by one Arizona group in the 1990s. Nothing followed for tanning. Its chemical relative bremelanotide became an approved medicine — for one narrow indication that has nothing to do with tanning.

28 de septiembre de 2026 · 3 min de lectura
Oxytocin: the approved hormone inside the OxyPT blendBlends

Oxytocin: the approved hormone inside the OxyPT blend

One half of the OxyPT blend is among the oldest approved peptide drugs in medicine — used in obstetrics since the 1960s. Here is what the labels actually cover, and what they pointedly do not.

28 de septiembre de 2026 · 1 min de lectura
SARMs part 2: the one with trials, and the four with noneSARMs

SARMs part 2: the one with trials, and the four with none

Part 1 covered the compounds with phase 2 and phase 3 programmes. The five left — ibutamoren, stenabolic, andarine, S-23, YK-11 — split into one with three real human trials and an ugly safety footnote, and four with no human efficacy data at all. Two of the five are not even SARMs.

28 de septiembre de 2026 · 4 min de lectura
Cartalax and Chonluten: the bioregulators with almost no published recordBioregulators

Cartalax and Chonluten: the bioregulators with almost no published record

Same Khavinson school as Thymalin and Epithalon, a fraction of the evidence. One cell-culture study for Chonluten, no readable efficacy study at all for Cartalax — and that asymmetry is the article.

26 de septiembre de 2026 · 2 min de lectura
Epithalon and the telomere claim: what the Khavinson papers actually reportLongevity

Epithalon and the telomere claim: what the Khavinson papers actually report

Telomerase reactivation in a dish, extra passages past the Hayflick limit, longer-lived flies and mice — and no modern human trial. The published Epithalon record, figure by figure.

26 de septiembre de 2026 · 4 min de lectura
Myostatin inhibitors: ACE-083 went to phase 2, follistatin-344 never left the labPerformance

Myostatin inhibitors: ACE-083 went to phase 2, follistatin-344 never left the lab

One follistatin-based molecule grew muscle in two randomised phase 2 trials and still failed where it mattered. The other has only animal data, a black market, and a retinal case series. The published record, side by side.

26 de septiembre de 2026 · 4 min de lectura
Tirzepatide: what SURMOUNT-1 and SURMOUNT-2 actually showedGLP-1

Tirzepatide: what SURMOUNT-1 and SURMOUNT-2 actually showed

Two 72-week placebo-controlled trials, 3,477 participants between them — one in obesity without diabetes, one in obesity with type 2 diabetes. The published weight-loss figures, dose by dose, and where the data stop.

26 de septiembre de 2026 · 3 min de lectura
ARA-290 (cibinetide): four human trials, and the endpoints they missedRepair

ARA-290 (cibinetide): four human trials, and the endpoints they missed

This is one of the very few compounds on the repair shelf with real randomised human data — four published trials, including a 64-subject phase 2b. Read them closely and the nerve-regeneration endpoint separates from placebo while the pain endpoint mostly does not.

4 de septiembre de 2026 · 6 min de lectura
Exercise mimetics: what AICAR, SLU-PP-332 and 5-Amino-1MQ have actually done, and in what speciesPerformance

Exercise mimetics: what AICAR, SLU-PP-332 and 5-Amino-1MQ have actually done, and in what species

One of these three has been given to 3,080 humans — and the trial was stopped for futility. The other two have never been given to a human at all. All three are sold on the same phrase, and the phrase comes from one mouse treadmill experiment in 2008.

4 de septiembre de 2026 · 6 min de lectura
Tesofensine: a phase 2 result that never became a phase 3 paperMetabolic

Tesofensine: a phase 2 result that never became a phase 3 paper

The 2008 Lancet trial is real, and the numbers in it are large. What followed is the part nobody quotes — an Expression of Concern from the journal, no published phase 3 anywhere in the indexed literature, and no approval in the EU or the US.

4 de septiembre de 2026 · 6 min de lectura
Endurance, GlutaMB and the antioxidant pens: the labels add up, the trials are less flatteringLongevity

Endurance, GlutaMB and the antioxidant pens: the labels add up, the trials are less flattering

Glutathione, NMN, resveratrol and methylene blue, in two pre-mixed pens. One component has a good human trial, one has four negative ones, and one is present at a dose thousands of times below the trial that reported a benefit. Ingredient by ingredient.

2 de septiembre de 2026 · 5 min de lectura
The four programs: what you are actually buying when you buy onePrograms

The four programs: what you are actually buying when you buy one

A program is the manufacturer's own multi-month protocol sold as the set of pens it calls for — priced below the sum of its parts, delivered on one fee. Here is what is in each of the four, and how strong the evidence under each component really is.

2 de septiembre de 2026 · 4 min de lectura
DSIP: named after an effect that later human work could not reproduceSleep

DSIP: named after an effect that later human work could not reproduce

Isolated from rabbit blood in 1977 and named for the EEG rhythm it enhanced. Four small human insomnia studies produced weak or null results, a 2009 anaesthesia study found it reduced delta rhythm, and no gene or receptor has ever been identified.

1 de septiembre de 2026 · 3 min de lectura
HGH Fragment 176-191 and AOD9604: a well-built mouse story with a missing human chapterMetabolic

HGH Fragment 176-191 and AOD9604: a well-built mouse story with a missing human chapter

The idea was elegant — take growth hormone's fat-metabolism domain and leave the growth and insulin effects behind. It worked in obese mice, repeatedly. PubMed indexes 23 papers mentioning AOD9604 and not one randomised human trial.

1 de septiembre de 2026 · 4 min de lectura
IGF-1 LR3 and PEG MGF: two names, and what is actually published under eachGH axis

IGF-1 LR3 and PEG MGF: two names, and what is actually published under each

Recombinant IGF-1 is an approved drug with a registry behind it. The LR3 analogue is a cell-culture reagent. PEG MGF has no administration study at all — the human MGF papers measure a gene switching on, not a peptide going in.

1 de septiembre de 2026 · 4 min de lectura
KPV: three amino acids off the end of α-MSH, and where its evidence actually sitsRepair

KPV: three amino acids off the end of α-MSH, and where its evidence actually sits

The mechanism is unusually well worked out — KPV enters cells through PepT1, a transporter that is upregulated exactly where gut inflammation is. Every efficacy result is a mouse or a cell line, and the colitis work was oral, not injected.

1 de septiembre de 2026 · 4 min de lectura
PT-141 (bremelanotide): the melanocortin that got an approval — for one indication onlyHormonal

PT-141 (bremelanotide): the melanocortin that got an approval — for one indication only

Two phase 3 trials, an FDA-approved product and a published critique of its own endpoints. This is the rare compound where the human data exists, and where reading it carefully changes what you can claim.

1 de septiembre de 2026 · 3 min de lectura
The recovery stack: BPC-157 and TB-500, and why they ship in one penRepair

The recovery stack: BPC-157 and TB-500, and why they ship in one pen

The most requested pairing in the repair category, in a single pre-filled pen. What each peptide is doing, what the published work actually reports, and why laboratories keep ordering the two together.

27 de agosto de 2026 · 4 min de lectura
BurnMix and Lipobalance: the metabolic pens for people who want more than one leverMetabolic

BurnMix and Lipobalance: the metabolic pens for people who want more than one lever

Two multi-pathway fat-loss formulations, opened up compound by compound. What each ingredient is there to do, which ones have human data, which ones do not, and where they sit next to the GLP-1 shelf.

27 de agosto de 2026 · 4 min de lectura
How to buy research peptides in Europe: the ten-minute checklistBuying guide

How to buy research peptides in Europe: the ten-minute checklist

Six checks that separate a serious European peptide supplier from a drop-shipper with a nice logo — and how to run them on any shop, including this one, before you spend anything.

27 de agosto de 2026 · 4 min de lectura
From checkout to doorstep: how a peptide order actually moves inside the EUOrdering

From checkout to doorstep: how a peptide order actually moves inside the EU

Same-day processing, tracked delivery in about four days, a plain unbranded box, and one flat fee per order. Here is every step of a European peptide delivery, including what happens when it goes wrong.

27 de agosto de 2026 · 4 min de lectura
Ipamorelin and CJC-1295: the GH-axis pairing labs ask for by nameGH axis

Ipamorelin and CJC-1295: the GH-axis pairing labs ask for by name

Two doors into the same output, in one pre-filled pen. Why this combination became the default in growth-hormone research, what the human data covers, and the label detail almost every shop gets wrong.

27 de agosto de 2026 · 4 min de lectura
The longevity pens: CellDetox and Everlong, and what is really inside themLongevity

The longevity pens: CellDetox and Everlong, and what is really inside them

Senolytics, exosomes, NAD+, glutathione, resveratrol — the two most advanced formulations in our catalog, ingredient by ingredient, with the research that supports each one and the research that does not exist yet.

27 de agosto de 2026 · 4 min de lectura
Paying with USDT, USDC or a bank transfer: how checkout works herePayments

Paying with USDT, USDC or a bank transfer: how checkout works here

Two payment rails, no cards, no third-party checkout script. What each one costs you in time, why the crypto amount has to be exact, and which one to pick if you want the parcel moving today.

27 de agosto de 2026 · 4 min de lectura
The skin shelf: GHK-Cu and Radiance, copper versus copper-freeSkin

The skin shelf: GHK-Cu and Radiance, copper versus copper-free

One peptide with fifty years of literature, one modern complex built without copper, and a third pen aimed at blemish-prone skin. What is in each, which claims are backed, and how to choose between them.

27 de agosto de 2026 · 4 min de lectura
Four departments, twelve shelves: a plain map of the catalogCatalog guide

Four departments, twelve shelves: a plain map of the catalog

Peptides, performance compounds, SARMs and programs — what each shelf is actually for, which compounds sit on it, and which article to read before you order from it.

27 de agosto de 2026 · 3 min de lectura
Nordic Peptides, Med Care Pharma, Marvel Nutrition, PharmaRx: who makes what we shipManufacturers

Nordic Peptides, Med Care Pharma, Marvel Nutrition, PharmaRx: who makes what we ship

Four manufacturers, four very different houses. Which one made the box that arrives, what each of them publishes about their own material, and where each is honestly weaker.

27 de agosto de 2026 · 3 min de lectura
Blends: when a combined pen is the right call, and when it costs you the answerBlends

Blends: when a combined pen is the right call, and when it costs you the answer

Klow, MitoBoost, Retabolic — three compounds in one pen, at a lower price than buying the parts. Here is the honest trade you are making when you take it.

23 de agosto de 2026 · 2 min de lectura
GHK-Cu: the copper peptide with fifty years of literature behind itSkin & repair

GHK-Cu: the copper peptide with fifty years of literature behind it

Isolated from human plasma in 1973, studied continuously since, and one of the few compounds in this catalog where the human evidence is topical, comparative and reasonably old.

23 de agosto de 2026 · 2 min de lectura
GHRP-2, GHRP-6 or ipamorelin: three ghrelin-receptor peptides, three different side profilesGH axis

GHRP-2, GHRP-6 or ipamorelin: three ghrelin-receptor peptides, three different side profiles

All three hit the same receptor and all three release growth hormone. What separates them is everything else they do on the way — appetite, cortisol, prolactin.

23 de agosto de 2026 · 3 min de lectura
The GLP-1 line, compared: semaglutide, tirzepatide, retatrutideGLP-1

The GLP-1 line, compared: semaglutide, tirzepatide, retatrutide

One receptor, two, or three. Here is the whole line side by side — the trial numbers, the trade-offs and which pen sits where in our catalog.

23 de agosto de 2026 · 3 min de lectura
Cómo leer un certificado de análisis (y cómo detectar uno falso)Calidad

Cómo leer un certificado de análisis (y cómo detectar uno falso)

Un COA es un documento sobre un lote, un día concreto y un laboratorio. La mayor parte de lo que circula como «analizado en laboratorio» en este mercado incumple esa frase en al menos dos puntos.

23 de agosto de 2026 · 3 min de lectura
Why everything in our peptide line ships as a pen, not a vialHandling

Why everything in our peptide line ships as a pen, not a vial

Vials are cheaper to buy and cheaper to sell. They are also where the errors live. Here is the measured difference, and why we made the call the way we did.

23 de agosto de 2026 · 3 min de lectura
Retatrutide 6, 12, 20 o 30 mg: qué pluma elegir y por qué existen cuatroGLP-1

Retatrutide 6, 12, 20 o 30 mg: qué pluma elegir y por qué existen cuatro

Las cuatro concentraciones no son cuatro productos distintos. Se corresponden con la forma en que se escaló la dosis en el ensayo de fase 2 y con la cantidad de material que consume realmente un protocolo determinado.

23 de agosto de 2026 · 3 min de lectura
SARMs: the phase 3 exists, and it missed its endpointsSARMs

SARMs: the phase 3 exists, and it missed its endpoints

This class is usually sold with the word 'clinical' attached. There is real clinical work behind it — two phase 3 trials — and knowing what they found is the difference between an informed buyer and a marketed-to one.

23 de agosto de 2026 · 3 min de lectura
Semax and Selank: two Russian peptides with a literature problemNeuro

Semax and Selank: two Russian peptides with a literature problem

Both are approved medicines in Russia. Both have decades of clinical use behind them. Almost none of that work is readable in English, and that gap is the honest headline.

23 de agosto de 2026 · 3 min de lectura
What actually degrades a peptide (and why we don't ship on ice)Handling

What actually degrades a peptide (and why we don't ship on ice)

The cold-chain theatre in this market is mostly theatre. Here is what the manufacturers themselves specify, what really damages a peptide, and the one product in our catalog that is an exception.

23 de agosto de 2026 · 3 min de lectura
Thymalin and the Khavinson bioregulators: forty years of data from one instituteBioregulators

Thymalin and the Khavinson bioregulators: forty years of data from one institute

The longest human follow-up of any compound in this catalog — 266 elderly patients over six to eight years — and the reason mainstream medicine still has not acted on it.

23 de agosto de 2026 · 2 min de lectura
BPC-157: qué dice realmente la evidenciaReparación

BPC-157: qué dice realmente la evidencia

Treinta y cinco estudios preclínicos, un estudio clínico. Esa proporción es toda la historia del BPC-157: un compuesto con una literatura animal amplia y bastante coherente, y casi ningún dato en humanos que la respalde.

21 de agosto de 2026 · 3 min de lectura
Retatrutide: qué muestran realmente los datos de fase 2GLP-1

Retatrutide: qué muestran realmente los datos de fase 2

Un agonista triple de receptores que produjo las mayores reducciones de peso publicadas hasta ahora para un único fármaco contra la obesidad: 24,2 % a las 48 semanas. Esto es lo que midió el ensayo y lo que no midió.

21 de agosto de 2026 · 4 min de lectura
Tirzepatide frente a semaglutide: el primer ensayo comparativo directoGLP-1

Tirzepatide frente a semaglutide: el primer ensayo comparativo directo

Durante años la comparación se hizo entre estudios distintos, lo que no es una comparación en sentido estricto. En 2025 los dos compuestos se enfrentaron por fin en el mismo ensayo: 751 participantes, 72 semanas, un único protocolo.

21 de agosto de 2026 · 3 min de lectura
CJC-1295 and ipamorelin: two mechanisms, one very common confusionGH axis

CJC-1295 and ipamorelin: two mechanisms, one very common confusion

The pairing is the most requested combination in the GH-axis line. It is also the one where the label on the vial and the study people quote are frequently not the same molecule.

19 de agosto de 2026 · 3 min de lectura
MOTS-c: the peptide your mitochondria write themselvesMetabolic

MOTS-c: the peptide your mitochondria write themselves

A 16-amino-acid peptide encoded inside mitochondrial DNA, released by exercise, and falling with age. The mechanism is elegant and well documented — in mice.

19 de agosto de 2026 · 2 min de lectura
NAD+, NMN and nicotinamide: three different molecules, one marketing wordMetabolic

NAD+, NMN and nicotinamide: three different molecules, one marketing word

The NAD category is sold as if it were one product. It is not — and the one human randomised trial in the field tested a specific precursor, at a specific dose, in a specific population.

19 de agosto de 2026 · 2 min de lectura
Semaglutide: what the STEP programme showed — and what happened when people stoppedGLP-1

Semaglutide: what the STEP programme showed — and what happened when people stopped

14.9% at 68 weeks made semaglutide famous. The trial extension, which gets far less attention, is the part that explains what the drug actually does.

19 de agosto de 2026 · 3 min de lectura
TB-500 y timosina β4: los ensayos clínicos son reales, pero son coliriosReparación

TB-500 y timosina β4: los ensayos clínicos son reales, pero son colirios

La timosina β4 ha pasado por ensayos en humanos aleatorizados y controlados con placebo, incluido uno de fase 3. Casi nada de ese trabajo se refiere al fragmento inyectable que se vende como TB-500, y esa diferencia es toda la cuestión.

19 de agosto de 2026 · 3 min de lectura
Tesamorelin: the one growth hormone peptide with an approval behind itGH axis

Tesamorelin: the one growth hormone peptide with an approval behind it

Of every GHRH-class compound sold as research material, exactly one has been through phase 3 and cleared by the FDA. Here is what that trial measured — and why the indication is narrower than the internet suggests.

19 de agosto de 2026 · 3 min de lectura
Todo lo que suministramos está destinado a la investigación de laboratorio in vitro. Estas páginas resumen trabajos publicados; no son instrucciones, ni un protocolo de dosificación, ni consejo médico.