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Plain-spoken notes on the compounds we supply — what the literature shows, how to read a COA, and the protocols that protect your data. Cited, never hyped.

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Melanocortins: From Vyleesi to Melanotan II Sexual health

Melanocortins: From Vyleesi to Melanotan II

Tanning and arousal run through the same family of receptors. That single fact explains both Melanotan II’s appeal and its downfall — and why…

Jun 2026 · 6 min read
Copper Peptides Compared: GHK-Cu vs AHK-Cu Skin & matrix

Copper Peptides Compared: GHK-Cu vs AHK-Cu

Two copper-carrying tripeptides sit side by side in the catalogue—one with a half-century of multi-group science behind it, the other with a thinner, mostly…

Jun 2026 · 6 min read
What Is IGF-1 LR3? The Growth Factor Engineered to Outlast Its Own Brakes Tissue repair

What Is IGF-1 LR3? The Growth Factor Engineered to Outlast Its Own Brakes

IGF-1 LR3 is a re-engineered version of insulin-like growth factor 1, redesigned to slip past the binding proteins that normally rein it in. Here…

Jun 2026 · 9 min read
What Is Larazotide? The One “Leaky Gut” Peptide That Reached a Phase III Trial Gut

What Is Larazotide? The One “Leaky Gut” Peptide That Reached a Phase III Trial

Larazotide (AT-1001) is an eight-amino-acid peptide designed to tighten the gut's molecular seams by antagonising the zonulin pathway. It is the only “leaky gut”…

Jun 2026 · 9 min read
What Is Melanotan II? The Tanning Peptide With a Cautionary Medical Record Sexual health

What Is Melanotan II? The Tanning Peptide With a Cautionary Medical Record

Melanotan II began as a clever idea for sunless photoprotection and became one of the most notorious peptides on the gray market. Its own…

Jun 2026 · 6 min read
What Is AHK-Cu? The Copper Peptide That Bills Itself as GHK-Cu’s Hair-Focused Cousin Skin & matrix

What Is AHK-Cu? The Copper Peptide That Bills Itself as GHK-Cu’s Hair-Focused Cousin

AHK-Cu is a blue copper-tripeptide complex studied mostly in the long shadow of GHK-Cu, with a particular fascination for the hair follicle. The chemistry…

Jun 2026 · 6 min read
What Is DSIP (Delta Sleep-Inducing Peptide)? The 50-Year Sleep Riddle Sleep

What Is DSIP (Delta Sleep-Inducing Peptide)? The 50-Year Sleep Riddle

A nine-amino-acid peptide pulled from the blood of sleeping rabbits in 1977, named for the brain waves it was meant to summon — and…

Jun 2026 · 6 min read
What Is Cortagen? The Bioregulator With a Severed-Nerve Story Bioregulators

What Is Cortagen? The Bioregulator With a Severed-Nerve Story

Cortagen is a four-amino-acid “cytogen” from Vladimir Khavinson's bioregulator programme, studied chiefly for one striking preclinical claim: that it helps injured peripheral nerves recover.…

Jun 2026 · 6 min read
What Is Vesugen? The Three-Letter Peptide Betting It Can Talk to Ageing Blood Vessels Bioregulators

What Is Vesugen? The Three-Letter Peptide Betting It Can Talk to Ageing Blood Vessels

Vesugen is the tripeptide KED (Lys-Glu-Asp), the “vascular” member of the Khavinson cytogen family. It rests on a bold and still-unproven idea: that three…

Jun 2026 · 8 min read
What Is Pinealon? The Three-Letter Peptide That Claims to Talk to the Ageing Brain Bioregulators

What Is Pinealon? The Three-Letter Peptide That Claims to Talk to the Ageing Brain

Pinealon is the tripeptide EDR (Glu-Asp-Arg), a “cytogen”-class short peptide from the Khavinson school proposed to act as an epigenetic regulator of the brain.…

Jun 2026 · 7 min read
Exercise in a Pill? SLU-PP-332, MOTS-c and 5-Amino-1MQ, Honestly Examined Metabolic & longevity

Exercise in a Pill? SLU-PP-332, MOTS-c and 5-Amino-1MQ, Honestly Examined

The dream of a molecule that delivers a workout’s metabolic rewards without the workout is one of longevity’s most seductive ideas. Examined honestly, it…

Jun 2026 · 8 min read
Is Research-Market Retatrutide Legit? The Drug, the Vial, and the Gap Between Them In the news

Is Research-Market Retatrutide Legit? The Drug, the Vial, and the Gap Between Them

Retatrutide is a real phase III triple agonist that produced some of the largest weight-loss figures in trial history. The vial sold on a…

Jun 2026 · 7 min read
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