The Peptide Encyclopedia
A calm, honest reference to the compounds that matter — what each one does, the evidence behind it, the dose ranges from beginner to maintenance, and when to cycle. Built to grow, and structured to power what comes next.
The Compounds
Filter by category or search, then tap any compound for the full profile — mechanism, honest evidence, the beginner→maintenance dose ladder, cycling logic, reconstitution, side effects and sources.
Reconstitution Calculator
Enter vial size, bacteriostatic water, and target dose — get the exact units to draw on a U-100 insulin syringe.
Injection Guide
Nearly all of these are subcutaneous — into the fatty layer just under the skin, not muscle. Here's where and how.
Where to inject
Use the pinchable-fat zones, stay ~2 inches clear of the navel, scars, moles and bruises, and rotate every time.
The four zones
- Abdomen — anywhere except a two-finger circle around the navel. Biggest, most reliable fat pad.
- Love handles / flanks — the sides above the hip; great rotation spot.
- Outer thighs — front & outer, a hand's width below the hip. Easy to reach yourself.
- Back of upper arms — good fat pad but hard to pinch solo.
Rotate to avoid lumps
- Repeated hits in one spot cause lipohypertrophy — rubbery tissue that absorbs erratically.
- Keep each new stick ~1 inch from the last.
- Work a spot in a grid/clock pattern, or alternate left/right and log it.
- Never inject into a lump or hard area — give it weeks to recover.
How to inject
Wash hands, swab the site and let it fully dry — wet alcohol stings.
Pinch a fold of skin and fat to lift it off the muscle (matters most if you're lean).
Insert quickly at 90° (short insulin needle) or 45° if very lean, then push slow and steady.
Aspiration isn't required for subQ with a tiny needle — few large vessels there.
Release, withdraw at the same angle, press with gauze (don't rub), and use a sharps container.
Reading a Syringe
The concept that unlocks all peptide dosing: a U-100 insulin syringe is really just a precise 0.01 mL ruler. "Units" = volume, not a drug amount.
U-100, in one line
100 units = 1 mL, so 1 unit = 0.01 mL.
Ignore the word "insulin" — the barrel is just a fine volume scale. For tiny doses a 0.3 mL / 30-unit syringe is easiest to read.
| Syringe | Total | Each line |
|---|---|---|
| 0.3 mL | 30 units | 1 unit — easiest |
| 0.5 mL | 50 units | 1 unit |
| 1.0 mL | 100 units | often 2 units |
Turning mg into units
mg in vial ÷ mL of water = mg per mL
mg per mL × 0.01 = mg per unit
desired dose ÷ mg per unit = units
Shortcut: units = dose(mg) × water(mL) × 100 ÷ vial(mg). Or use the calculator.
Storage & Handling
Keep them cold, keep them sterile, use within the window.
Dry (lyophilized)
- Fridge at 36–46°F (2–8°C).
- Sealed until you reconstitute.
- Away from light, heat, moisture.
- Stable 1–2+ years stored right.
After mixing
- Refrigerate, store upright.
- Don't shake — swirl gently.
- Alcohol-wipe the stopper each time.
- Protect from light.
Use window
- Use reconstituted vials within ~28 days.
- Based on the bac-water preservative.
- Some compounds vary — follow product notes.
If left out
- A few hours at room temp is usually fine.
- No hot cars, no direct sun.
- Back in the fridge ASAP.
Best practices
- New sterile syringe & needle for every injection.
- Rotate sites; never share vials or syringes.
- Toss the vial if it goes cloudy, grows particles, changes color, or contamination is suspected.