The basics
What even is a peptide?
A peptide is a short chain of amino acids that your body uses to run almost every system. Scientists have been recreating them since 1922. That is the whole idea. The rest is just detail, and this page walks you through it.
7,000+
peptides your body already makes
1922
year scientists first recreated one
22
covered here
Four things your body uses them for
Your body already runs on peptides.
Hunger & Glucose
Peptides signal your brain when you are full and tell your body how to handle blood sugar. The drugs behind Ozempic and Wegovy are peptides. They work by mimicking a hormone your gut already makes after eating.
Healing & Recovery
Some peptides signal the body to prioritize tissue repair: muscle, tendons, skin, and gut lining. This is the mechanism behind some of the most-researched compounds in the grey market.
Hormones & Growth
The pituitary gland releases growth hormone in response to peptide signals. Recreating those signals is how researchers target body composition, sleep quality, and age-related hormone decline.
Immune & Defense
The immune system coordinates its response using peptide signals. Some therapeutic peptides amplify or modulate that response, used internationally for hepatitis, cancer, and immune conditions.
Here is the part that matters most. Ozempic (semaglutide) is a peptide. The vial your neighbor is injecting from a compounding pharmacy or grey-market vendor likely contains the same molecule. The biggest difference is not the drug. It is accountability. The branded version has a paper trail from manufacturer to patient, with someone legally responsible at every step. The unbranded version often does not.
Wait, you have heard of one
You already know more than you think.
The commercial ones
Ozempic, Wegovy, Mounjaro, Zepbound
The GLP-1 weight-loss drugs from the commercials. Semaglutide and tirzepatide are peptides. This is almost certainly the version you have heard of.
The recovery ones
BPC-157 & TB-500
The healing compounds people call the Wolverine stack, talked about for tendons, gut, and soft-tissue repair. Sold in the grey market as research chemicals, not FDA approved.
The anti-aging ones
Sermorelin, Ipamorelin, CJC-1295
Growth-hormone secretagogues, the compounds behind a lot of the sleep, recovery, and body-composition conversation in the longevity world.
That is the foundation. Next, see what a compound actually does inside your body, or keep following the path.
Daily Peptide is independent. Educational, not medical advice. Never what to take, how to take it, or where to get it.