Compare · all pairs
A
GHK-Cu
B
PT-141
A side-by-side look at what GHK-Cu and PT-141 actually are, so you can see where they overlap and where they genuinely differ before deciding which is worth researching further — no score, no “winner,” just the facts next to each other.
FDA status
GHK-Cu
No FDA-approved product — only topical, over-the-counter cosmetic listings exist
PT-141
FDA-approved — Vyleesi, for premenopausal HSDD only (the compounded version this board ranks is not FDA-reviewed)
Typical dose / use
GHK-Cu
No agency-set dosing standard exists for either the topical or injectable form
PT-141
Vyleesi's approved dose: 1.75 mg SC as needed, ≤8 doses/month (the compounded version has no agency-set dose)
Product forms
GHK-Cu
Topical (OTC) & compounded injectable
PT-141
Injectable — Vyleesi ships as a pre-filled autoinjector; the compounded version is a reconstituted powder vial
How it works
GHK-Cu
A copper-binding tripeptide naturally present in human plasma; its only controlled human trials (both topical) failed to beat their own comparator on the primary endpoint, and zero human trials exist for the injectable form.
PT-141
Activates melanocortin receptors — chiefly MC4R in the hypothalamus — believed to trigger dopamine release that increases sexual desire, a brain-mediated mechanism distinct from PDE5 inhibitors, which act on blood flow.
Providers ranked on this board
GHK-Cu
7
PT-141
7
Cost on this board
GHK-Cu
From $68/mo
PT-141
From $75/mo
Every fact above is reused from GHK-Cu's and PT-141's own compound guides, not re-derived here. A highlighted value means that number is objectively larger or smaller — more providers ranked, a lower standing price — never a claim about which compound is “better.” Cost and provider counts are read live from each compound's own board and can change without notice.
Go deeper on each compound
GHK-Cu
Medical disclaimer: This content is for general educational purposes only and is not medical advice, diagnosis, or treatment. Always consult a licensed healthcare professional before starting, stopping, or changing any treatment.
This page is a fact comparison, not a recommendation for either compound — talk to a licensed clinician about your own situation.