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Peptide Blogged

Peptide Blogged: Peptides, read carefully

Weight loss7 min

Liraglutide: Uses, Benefits, Dosage and Safety

The daily GLP-1 that came before Ozempic. What liraglutide does, why it is still prescribed, and how it compares on weight and heart outcomes.

By Marguerite Vayle ·

Weight loss7 min

Cagrilintide: Uses, Benefits and Safety

The amylin analogue behind CagriSema. What cagrilintide does, why it works through a different pathway from GLP-1, and what REDEFINE measured.

Weight loss7 min

GLP-1 Receptor Agonists Explained

What a GLP-1 receptor agonist is, why one gut hormone became the basis of every major weight loss drug, and how the newer ones differ.

Looking up a specific peptide?

Plain-English guides to 34 of them: what people take each one for, what the research actually found, and how they compare with each other.

Strong human evidence

Semaglutide

Also called Ozempic, Wegovy, Rybelsus

The weekly injection behind Ozempic and Wegovy, and the best evidenced weight loss medicine most people will ever be offered.

Weight and appetite

No human trials yet

BPC-157

Also called Body Protection Compound 157, Pentadecapeptide BPC 157

The most talked-about recovery peptide online, with three decades of animal research behind it and a following that keeps growing.

Recovery and injury

Mixed human studies

GHK-Cu

Also called Copper peptide, Copper tripeptide-1

The blue copper peptide in serums, and one of the few skincare peptides with real human studies behind its firmness claims.

Skin and hair

Browse all peptidesWeight and appetite · Recovery and injury · Skin and hair · Hormones and growth · Sex and libido · Sleep, mood and focus · Longevity · Sold alongside peptides

Sections

Weight loss

The incretin compounds — GLP-1, GIP and glucagon receptor agonists — and what the trials behind them actually measured.

Compounds

One compound at a time: what it is claimed to do, what has been measured, and in whom it was measured.

    Fundamentals

    What peptides actually are, how they are administered, and the vocabulary you need before anything else on this site makes sense.

    Reading the research

    How to tell a promising human trial from a mouse study with a press release. Study design, sample sizes, and the failure modes of peptide research specifically.

    Safety and sourcing

    Purity, storage, contamination, and what can actually be verified about a vial.

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