Community protocol

GHK-CU

Skin healing

63 kg

164 cm

female

Healing

ghk

Longevity

Weight

GLP-3

Metabolic

For research purposes only.

Peptide Mind does not endorse this protocol. This is a user-generated research reference — not for human consumption or therapeutic use.

Log your research schedule

Add this research protocol to your calendar or print a reference copy for your lab records. For research purposes only.

Peptide Protocol Schedule

A day-by-day view of this protocol. Tap any day to see which peptides are active. Circle size reflects how many peptides are scheduled; colored dots below represent individual peptides.

August 2026
Sun
Mon
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26
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29
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31
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5

ghk

GHK-Cu

morning

subcutaneous

+1 mg every 4 weeks · max 2 mg

1 mg

Daily Dosing Breakdown

A grouped breakdown of which peptides to take throughout this protocol. Consecutive days with the same schedule are combined. Days with no doses are omitted.

Aug 9–10, 2026

GHK-Cu1 mg · Morning

Aug 12, 2026

GLP-3 (Retatrutide)2 mg · Morning

Aug 13–17, 2026

GHK-Cu1 mg · Morning

Aug 19, 2026

GLP-3 (Retatrutide)2 mg · Morning

Aug 20–24, 2026

GHK-Cu1 mg · Morning

Aug 26, 2026

GLP-3 (Retatrutide)3 mg · Morning

Aug 27–31, 2026

GHK-Cu1 mg · Morning

Sep 2, 2026

GLP-3 (Retatrutide)3 mg · Morning

Sep 3–5, 2026

GHK-Cu1 mg · Morning

Sep 6–7, 2026

GHK-Cu2 mg · Morning

Sep 9, 2026

GLP-3 (Retatrutide)4 mg · Morning

Sep 10–14, 2026

GHK-Cu2 mg · Morning

Sep 16, 2026

GLP-3 (Retatrutide)4 mg · Morning

Sep 17–21, 2026

GHK-Cu2 mg · Morning

Sep 23, 2026

GLP-3 (Retatrutide)5 mg · Morning

Sep 24–28, 2026

GHK-Cu2 mg · Morning

Sep 30, 2026

GLP-3 (Retatrutide)5 mg · Morning

Oct 1–2, 2026

GHK-Cu2 mg · Morning

Weekly Schedule

Day-of-week breakdown for each peptide in this protocol.

Mon
Tue
Wed
Thu
Fri
Sat
Sun

ghk

GHK-Cu

morning

subcutaneous

1 mg

Starting Dose
1 mg
Step
+1 mg every 4 weeks
Max Dose
2 mg
Cycle Duration
7 weeks 6 days

Total Peptide Requirements

The total quantity of each peptide needed to complete this protocol, calculated from dosage and duration.

Skin

ghk

Longevity

GHK-Cu

1–2 mg · 5× weekly · Morning

58.6

Weight

GLP-3

Metabolic

GLP-3 (Retatrutide)

2–6 mg · weekly · Morning

27.3

Know exactly what to draw

Enter your vial concentration and we'll calculate the precise injection volume for every peptide in this protocol.

Protocol Body Targets

The biological systems and tissue targets addressed by the 2 peptides in this protocol.

3

Body Targets

2 peptides

Skin

Promotes collagen synthesis, wound healing, and skin elasticity.

GHK-Cu

Metabolic

Regulates fat metabolism, insulin sensitivity, and energy use.

GLP-3 (Retatrutide)

Gut

Supports gut lining integrity, digestion, and the gut-brain axis.

GLP-3 (Retatrutide)

Protocol targeted areas

Build your own protocol

Create a custom peptide stack tailored to your goals. Add peptides, set dosages, and share it with the community.

Protocol Duration & Timeline

A visual breakdown of each peptide's active window within this protocol. Use this to understand the total cycle length and how each compound's duration compares to the full protocol.

GHK-Cu

1 mg 5x per week

Start at 1 mg · +1 mg every 4 weeks · max 2 mg

55 days

GLP-3 (Retatrutide)

2 mg once per week

Start at 2 mg · +1 mg every 2 weeks · max 6 mg

55 days

Protocol Peptides

Each peptide included in this protocol with its dosing amount, frequency, and administration details.

Skin

ghk

Longevity

GHK-Cu

Weight

GLP-3

Metabolic

GLP-3 (Retatrutide)

Preclinical

WeightMetabolic

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Frequently asked questions

What is a peptide dosage calculator?

A peptide dosage calculator is a free tool that converts your vial size, bacteriostatic water volume, and target dose into an exact syringe draw volume. Instead of doing the reconstitution math by hand, you enter three inputs and instantly get the concentration of your solution and how many milliliters or syringe units to draw. This calculator works for single peptide compounds and multi-peptide blends.

How do I calculate peptide dosage from a vial?

To calculate your peptide dose, divide the total peptide content of your vial in micrograms by the volume of bacteriostatic water you added in milliliters. This gives you your solution concentration in mcg/mL. Then divide your target dose by that concentration to get your draw volume. For example, a 5mg (5,000 mcg) vial reconstituted with 2mL of BAC water gives a concentration of 2,500 mcg/mL. A 250 mcg dose would require drawing 0.1mL. This calculator automates all of those steps instantly.

How much Bacteriostatic water should I add to a peptide vial?

Most people add 2mL to 3mL of bacteriostatic water per vial, but the right amount depends on the dose you want to draw and the syringe size you are using. Adding 1mL to a 5mg vial gives you a concentration of 5,000 mcg/mL, making each dose very small in volume. Adding 2mL gives you 2,500 mcg/mL, which is easier to measure on a standard insulin syringe. A general guideline is to choose a volume that puts your typical dose somewhere between 10 and 30 units on a U-100 syringe. Use the calculator above to test different water volumes and find what works for your dose.

How are peptides different from proteins?

Both are made of amino acids, but peptides are much smaller than proteins. Because of their tiny size, peptides can act like tiny messengers in the body, sending specific signals to your cells to tell them exactly what to do.​