THE BEGINNER’S PLAYBOOK

Peptide science,
without the confusion.

Understand the language, pathways, evidence, and research status behind peptides—one clear concept at a time.

NEWNot sure where to start? Take the 2-minute guide path quiz →

For educational purposes only. Not medical advice, diagnosis, treatment, or prescribing guidance. Research and regulatory information can change over time.

01
Amino acidsIndividual building blocks
02
PeptidesShort chains with biological roles
03
ProteinsLarger, complex structures
GLP-1 • METABOLISM • RECOVERY • MITOCHONDRIA • GH AXIS • NEUROPEPTIDES • SKIN & HAIR

START HERE

What is a peptide?

A useful mental model: amino acids are letters, peptides are short messages, and proteins are longer instructions.

A peptide is a short chain of amino acids. Many peptides act like biological messages, interacting with receptors or pathways and influencing what happens next.

01

Specific signal

Different amino-acid sequences have different shapes and can interact with different biological targets.

02

Different evidence

“Peptide” is a broad category—not a guarantee that every compound has the same safety, approval, or research profile.

For educational purposes only. Not medical advice, diagnosis, treatment, or prescribing guidance. Research and regulatory information can change over time.

THE LANDSCAPE

Research areas

Researchers group compounds by the systems and pathways they study—not simply by the outcomes promoted online.

01

Metabolism

Appetite, glucose regulation, insulin signaling, and energy balance.

GLP-1 • GIP • glucagon • amylin
02

Recovery

Tissue signaling, inflammation, remodeling, and repair research.

BPC-157 • TB-500 • KPV
03

Cellular energy

Mitochondrial function, metabolic flexibility, and cellular stress.

MOTS-C • SS-31 • NAD+
04

GH axis

Growth hormone release and downstream IGF-1 signaling.

Tesamorelin • CJC-1295 • Ipamorelin
05

Brain & behavior

Neuropeptide signaling, stress, cognition, and sleep research.

Selank • Semax • DSIP
06

Skin & hair

Collagen signaling, tissue remodeling, and cosmetic research.

GHK-Cu • blends
See all research areasOpen the compound library

NEW ON PEP GUIDE

Fresh guides,
same evidence-first approach

Math

Vials, syringes & blends

The three formulas, worked examples, a blend calculator, and mixing and storage basics.

Open peptide math →

Metabolism

Amylin, explained

Cagrilintide, CagriSema, and eloralintide, plus how GLP-1 dose escalation works.

Read the amylin guide →

Evidence

Where dosing numbers come from

How to tell an FDA-labeled dose from a number that just gets repeated online.

Learn the difference →