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LivingLabs

Peptides,
explained.

Plain English answers on doses, mixing, and how to actually use them safely.

Browse peptides Read the basics
Start here Learn the basics before diving in. Beginner's guide

Featured

Crowd favorites.

GHK-Cu + TB-500 + BPC-157

GLOW

A 70mg three-in-one mix focused on healing, recovery, and helping skin and tissue bounce back.

See the guide

TB-500 + BPC-157 + KPV

Tri-Heal

A 45mg blend that calms inflammation and helps your body repair and rebuild.

See the guide

Triple GLP-1 / GIP / Glucagon

Retatrutide

A newer weight-loss peptide — early trials showed up to 24% body-weight reduction.

See the guide

Browse

Browse by pathway

Growth Hormone

23

Boost energy and vitality.

Healing

20

Bounce back quicker, feel better.

Cognitive

17

Sharper thinking, better focus.

Weight Loss

14

Trim down while staying energized.

Anti-Aging

9

Look and feel younger.

Muscle Growth

4

Build stronger, bigger, faster.

Learn

How peptides work

Understand the science behind peptide therapy.

Peptide = Chain of Amino Acids

Like beads on a necklace

G Glycine
H Histidine
R Arginine
P Proline
L Leucine

Peptide

2–50 amino acids

+more

Protein

100s–1000s

Think LEGO: Each bead is a different type of "brick." Snap them together in different orders to build different peptides.

Peptide (Key) Receptor (Lock)
Peptide in bloodstream Peptide approaching… ✓ Receptor Activated!
Peptide arrives at cell
Binding fits into receptor
Signal triggers response
Cascade chain reaction starts
Action proteins activate
Effect body responds

Peptide: The peptide travels through the bloodstream to find its target cell.

Binding: Like a key fitting into a lock, the peptide attaches to its specific receptor.

Signal: The receptor changes shape, triggering an electrical signal inside the cell.

Cascade: One signal activates many proteins, like dominoes falling in sequence.

Action: Activated proteins carry out specific tasks: building, repairing, or signaling.

Effect: The final result: muscle grows, tissue heals, or focus improves.

Cell

Click a pathway to see how it works

Watch the signals travel from your cell

Most looked up

What people are reading.

1 Single

Semaglutide

Weight Loss

GLP-1 receptor agonist for weight management and blood sugar control. The active ingredient in Ozempic and Wegovy, semaglutide mimics the GLP-1 hormone…

0.25-2.4mg · Weekly
2 Stack

Ultimate Healing Stack

Healing

BPC-157 + TB-500 + GHK-Cu comprehensive healing routine

BPC 500mcg + TB-500 2.5mg + GHK 1mg · Daily (BPC/GHK) + 2x weekly (TB-500)
3 Single

BPC-157

Healing

Body Protection Compound-157 is a 15-amino acid peptide derived from human gastric juice. It exhibits remarkable regenerative properties for tendons, ligaments, muscles,…

250-500mcg · 1-2x daily
4 Single

Tirzepatide

Weight Loss

Dual GIP/GLP-1 receptor agonist for enhanced weight loss. The active ingredient in Mounjaro and Zepbound, tirzepatide activates both GIP and GLP-1 receptors…

2.5-15mg · Weekly
5 Stack

GH Optimization Stack

Growth Hormone

CJC-1295 + Ipamorelin + MK-677 for maximum sustained GH elevation

CJC 100mcg + Ipa 200mcg + MK-677 15mg · CJC/Ipa 1-2x daily, MK-677 daily
6 Stack

TB-500 + BPC-157 Stack

Healing

The foundational healing peptide stack combining TB-500 (systemic wound healing) with BPC-157 (localized tissue repair). This synergistic duo is the most popular…

TB-500: 2-5mg/wk | BPC-157: 250-500mcg/day · TB-500: 2x/week | BPC-157: 1-2x/day
See all peptides

Why us

Built to be clear

Easy to follow

Plain steps you can actually use — no jargon, no guesswork.

Mixing made simple

Clear, step-by-step instructions for prepping each peptide the right way.

Kept up to date

We refresh guides as new research comes in, so what you read stays current.

153+

Dosing guides

Easy-to-read guides for single peptides, blends, and stacks — with mixing instructions you can follow on the first try.

92 Single
28 Blends
33 Stacks

Stories

Real people, real results.

Marcus T.

“After about 12 weeks on BPC-157, I was bouncing back between sessions way faster. I'm hitting numbers I didn't think I'd see for years.”

Marcus T.

Software Engineer & CrossFit Athlete

Sarah M.

“GHK-Cu did more for my skin than any pricey serum I've tried. My hair feels thicker, my nails are stronger, and I just feel better in my own skin.”

Sarah M.

Wellness Coach & Mom of 2

Robert & Linda K.

“At 67, I've got more energy and clearer thinking than I did at 50. Epitalon has been a real boost for both of us — we're loving retirement.”

Robert & Linda K.

Retired Physicians

* These are personal stories. Everyone reacts differently — check in with a healthcare provider before starting anything new.

Articles

Fresh reads

General Peptide Information 1 min

Peptides from Krill, Fruit, and Scorpions

1. Isolation and functionalities of bioactive Peptides from Fruits and Vegetables: A Review 2. Antioxidant peptides from Antarctic Krill (Euphausia superba) hydrolysate:…

Keep reading
Follistatin 1 min

What is Follistatin?

## What is Follistatin? Follistatin was first identified in the late 1980s, when researchers discovered that it could block the activity of…

Keep reading
TB-500 (Thymosin Beta-4) 1 min

TB-500 (Thymosin Beta-4) Peptide Research

TB-500 also known as Thymosin Beta 4 is a naturally occurring peptide. It is found in high concentrations in blood platelets, wound fluid and…

Keep reading
See all articles

Questions?

Frequently asked

Peptides are short strings of amino acids — basically tiny messengers that tell your cells what to do. Depending on the peptide, that message might be 'heal this tissue,' 'release some growth hormone,' or 'calm down inflammation.' Think of them as small, very specific instructions for your body.

When they come from a trustworthy source, are stored properly, and used at sensible doses, peptides have a long track record in research and clinical settings. That said, everyone reacts a bit differently — so it's smart to talk with a doctor before starting anything new. Quality and storage matter just as much as the dose.

Unmixed (powdered) peptides keep best in the freezer and usually stay good for a year or two. Once you mix them with bacteriostatic water, move them to the fridge and plan to use them within about 4–8 weeks. Keep them out of direct light, and avoid freezing and thawing the mixed version over and over.

Subcutaneous (SubQ) shots go into the soft layer of fat just under the skin — usually the belly or thigh. They're easier to do yourself and absorb a bit slower. Intramuscular (IM) shots go deeper into the muscle and absorb faster. Most peptide guides use SubQ because it's simpler and gentler.

You'll need bacteriostatic water. Pull the right amount into a syringe, then push it slowly down the side of the vial — not straight onto the powder. Swirl gently until it dissolves; don't shake. If you're unsure how much water to use, our calculator does the math for you.

It really depends on the peptide and what you're using it for. Something like BPC-157 can show up in 1–2 weeks for recovery. Growth hormone peptides often need 4–12 weeks to show real changes. Longevity stuff is more of a slow burn. Consistency matters more than speed.

Yes — and a lot of people do. BPC-157 with TB-500 is a popular recovery combo, and CJC-1295 with Ipamorelin is a common growth-hormone pairing. Just do your homework before stacking, and if possible, run it by someone medical.

Most are pretty mild — a little redness at the injection spot, some bloating, more hunger, tiredness, or a flushed feeling. Serious side effects are rare but possible. Start low, see how your body reacts, and adjust from there.

Got more? Dig into our articles

Tools

Reconstitution calculator

Figure out the exact volume to draw for your dose.

  1. 1 Enter the total peptide amount (mg or mcg).
  2. 2 Specify the BAC water volume (mL).
  3. 3 Enter your target dose per injection.
  4. 4 Click Calculate to see volume and total doses.

Calculator

Where do you want to start?

Browse every protocol, or start with the basics if peptides are new to you.

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