The Peptide Column

The Peptide Column

Peptide 101: Oxytocin

Sep 17, 2026

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4 min read

Peptide 101: Oxytocin

A hospital drug since the 1960s and a wellness product since about 2015 — and the evidence behind those two oxytocins is not remotely the same.

Peptide 101: Cagrilintide

Sep 7, 2026

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4 min read

Peptide 101: Cagrilintide

The obesity drug that is not a GLP-1 — what cagrilintide is, what the trials actually showed, and why it is mostly discussed as half of something else.

Peptide 101: Retatrutide (LY3437943)

Aug 31, 2026

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5 min read

Peptide 101: Retatrutide (LY3437943)

Retatrutide is the three-receptor weight-loss injection posting the biggest numbers anyone has recorded. Here is what it does, and what is still unknown.

Peptide 101: TB-500 (Thymosin Beta-4 Fragment)

Aug 24, 2026

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6 min read

Peptide 101: TB-500 (Thymosin Beta-4 Fragment)

The basics on TB-500 — what it is, how it works, and what the evidence shows — plus the news worth your time.

semaglutide

+3

Peptide 101: Ipamorelin Acetate

Aug 10, 2026

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4 min read

Peptide 101: Ipamorelin Acetate

A brief explanation on Ipamorelin — what it is, how it works, and what the evidence shows — plus the news worth your time.

ghk-cu

+5

Peptide 101: Tesamorelin (Egrifta)

Aug 3, 2026

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5 min read

Peptide 101: Tesamorelin (Egrifta)

A description on Tesamorelin — what it is, how it works, and what the evidence shows — plus the news worth your time.

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