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Comparison

BPC-157 vs GHK-Cu

BPC-157 vs GHK-Cu: tendon and tissue healing vs collagen and skin support. Which to pick or whether to stack.

№ 001
BPC-157
HealingEvidence: Limited

Think of BPC-157 as a healing accelerator for connective tissue. Most users run it for stubborn tendon, ligament, or gut problems where regular rehab has stalled. You inject a tiny amount under the skin once a day for 4-6 weeks, take a break, then reassess.

Onset
50
Documentation
55
Side intensity
64
Popularity
95
№ 005
GHK-Cu
SkinEvidence: Limited

GHK-Cu is a tiny copper-binding peptide your skin already has — but levels drop with age. Used to support collagen, wound healing, and hair follicles. Topical for skin, sub-q injection for systemic effect on connective tissue.

Onset
45
Documentation
50
Side intensity
64
Popularity
60
Side-by-side
Field
Left
Right
Category
Healing
Skin
Half-life
~4 hours sub-q
~2 hours systemic
Route
Subcutaneous (oral for gut)
Sub-q (systemic) or topical (skin)
Schedule
Daily
Daily
Cycle length
4-6 weeks on, 4 weeks off
4-6 weeks
Dose
200-500 mcg sub-q daily, ideally injected near the injury site.
Sub-q: 1-2mg daily, 4-6 week cycles. Topical: 0.05-0.2% concentration, 1-2x daily.
FDA
Not FDA approved for any indication.
Approved as a cosmetic ingredient. Not approved as a drug.
WADA
Banned (S0 – Non-Approved)
Not listed
Natty?
Not natty
Grey area
Prescribed
Not prescribed in conventional medicine. Some compounding pharmacies and longevity clinics offer it off-label.
Not prescribed; widely used as topical skincare ingredient.
Top side effects
Mild injection-site irritation; Lightheadedness in first few doses; Transient appetite changes
Injection-site flush; Mild metallic taste shortly after dose; Rare: headache

Which one should you pick?

Pick BPC-157 if lifters with nagging tendon or joint pain or anyone recovering from a soft-tissue injury.

Pick GHK-Cu if anyone running an aggressive skin/anti-aging routine or healing stack add-on for connective tissue.

Note: these two are commonly stacked together rather than chosen between. See the entries for the canonical protocol.

Full entry
№ 001 BPC-157 →
Full entry
№ 005 GHK-Cu →