GHK-Cu Tracker
GHK-Cu is a copper tripeptide studied for collagen synthesis and skin and wound repair. This page covers its half-life, what that timescale means for keeping a usable record, and how it changes the shape of a log — not what to take or how much.
What GHK-Cu's timing means for tracking
GHK-Cu has a short half-life — around 1 hour — with an estimated activity window near 6. It clears within a working day and does not accumulate between entries.
What makes its log different from the other short-acting compounds is the route. GHK-Cu is used both topically and by injection, and those are not interchangeable records. A topical application and an injected entry at the same nominal amount describe completely different events, so a log that does not distinguish them becomes difficult to read back later.
Vial sizes also run much larger here than for most peptides — 50 mg and 100 mg are common, against 5 mg elsewhere. That changes the reconstitution arithmetic substantially, and it is a frequent source of unit-count errors when someone applies a 5 mg vial's habits to a 50 mg one.
What to capture in the log
- Record the route. Topical and injected entries are not comparable and should not share a series.
- Double-check the vial size — 50 mg and 100 mg vials are common and shift the unit count by an order of magnitude.
- Nothing carries between days, so each entry stands alone.
Worked reconstitution example
Purely as arithmetic, using round numbers rather than a recommendation. If a 50 mg vial were mixed with 5 mL of bacteriostatic water, the concentration would be 10 mg/mL. Measuring 1 mg from that would come to:
10 units on a U-100 syringe
50 mg ÷ 5 mL = 10 mg/mL → 1 mg = 0.1 mL = 10 units
Change either the vial size or the water and this number changes completely. Run your own figures in the reconstitution calculator.
Frequently asked questions
What is the half-life of GHK-Cu?
About 1 hour, with an estimated activity window near 6 hours. It clears within roughly 5 hours on the five-half-life convention.
Is GHK-Cu used topically or injected?
Both are common, and they are not equivalent records. Logging the route matters more for this compound than for most.
Why are GHK-Cu vials so much larger?
50 mg and 100 mg vials are typical, against 5 mg for many peptides. Applying a 5 mg vial's unit habits to a 50 mg vial is a common and large error.
How many units is 1 mg of GHK-Cu?
With a 50 mg vial in 5 mL the concentration is 10 mg/mL, so 1 mg is 0.1 mL — 10 units on a U-100 syringe.
Track GHK-Cu without the mental math
PepTrack stores the schedule, the log, and the concentration together, and draws the estimated level using the same half-life figures shown above. Free on iPhone, no account required.
Download on the App Store