Intro to Peptides
Everything you need to understand what peptides are, how they work, whether you're ready to use them, and where to start in one place.
Peptides are short chains of amino acids — much smaller than proteins
What is a peptide?
Amino Acids
The basic building blocks of life. Your body uses 20 standard amino acids.
Peptides (2–50 AAs)
Short chains of amino acids joined by peptide bonds. Small enough to signal cells directly.
Proteins (50+ AAs)
Longer chains that fold into complex 3D structures enzymes, hormones, structural tissue.
The key insight: Peptides work by binding to specific receptors and triggering natural biological cascades telling your body to do something it already knows how to do, just more efficiently. Unlike steroids, they don't replace your hormones. They signal for more.
What can they do?
Peptides vs. Steroids vs. Supplements
The most common question — answered in a table.
| Aspect | 🧬 Peptides | 💪 Steroids (AAS) | 💊 Supplements |
|---|---|---|---|
| Mechanism | Receptor signaling | Hormone replacement | Nutritional support |
| Legality (US) | Research chemical ⚠️ | Schedule III 🚫 | OTC Legal ✅ |
| Injections needed | Usually | Usually | No |
| HPTA Suppression | None | Yes often severe | None |
| Reversibility | High | Low—Medium | N/A |
| Side effects | Generally mild | Significant | Minimal |
| Bloodwork needed | Recommended | Essential | No |
| Research depth | Growing — 1000s of papers | Extensive | Varies widely |
This is a general overview. Individual peptides vary significantly. Always research your specific compound.
How to read a COA
A Certificate of Analysis is a vendor-provided lab report. Tap the markers below to learn what each section means.
Janoshik Analytical
Certificate of Analysis
Sample: BPC-157 · Lot #BPC2024-001
Test Date
2024-11-12
Sample Details
Test Results
HPLC Chromatogram
Pre-flight checklist
Check off each item before starting any peptide protocol. Be honest with yourself.
Beginner path picker
Pick your primary goal we'll show you the single best starting peptide for your situation.
Ready to go deeper?
You've got the fundamentals. Now explore the tools built for serious researchers.