--- title: "Finasteride vs GHK-Cu: Side-by-Side Comparison (2026)" url: https://www.bodyhackguide.co/compare/finasteride-vs-ghk-cu description: "Compare Finasteride vs GHK-Cu side by side. We earn a commission on some vendor links. Mechanism, half-life, dose range, side effects and prices." lang: en --- Skip to content Compare notes on r/BodyHackGuide (https://reddit.com/r/bodyhackguide) Compare notes with other researchers. Join r/BodyHackGuide (https://reddit.com/r/bodyhackguide) # Finasteride vs GHK-Cu Side-by-side comparison of Finasteride and GHK-Cu: mechanism, half-life, dose range, safety profile, and vendor pricing. Finasteride from $39.99 GHK-Cu from $34.99 ## Price snapshot ### Finasteride Current low $39.99 current listings 7-day low — not enough history yet 30-day low — not enough history yet 30-day change — not enough history yet ### GHK-Cu Current low $34.99 current listings 7-day low — not enough history yet 30-day low — not enough history yet 30-day change — not enough history yet ## Finasteride Finasteride is an orally-active selective type II 5α-reductase inhibitor that blocks the conversion of testosterone to dihydrotestosterone (DHT), the primary androgenic driver of both benign prostatic hyperplasia (BPH)… **Lowest listed price:** $39.99 across 1 listing Full Finasteride profile (https://www.bodyhackguide.co/compound/finasteride) ## GHK-Cu GHK-Cu is the copper(II) complex of the tripeptide glycyl-L-histidyl-L-lysine, a molecule Pickart and Thaler first pulled out of human plasma in 1973. The free peptide (GHK, C14H24N6O4) weighs about 340.4 Da; bind it 1:1… **Lowest listed price:** $34.99 across 7 listings Full GHK-Cu profile (https://www.bodyhackguide.co/compound/ghk-cu) ## Side-by-side comparison | Attribute | Finasteride | GHK-Cu | | --- | --- | --- | | Category | Pharmaceutical | Skin, Hair & Aesthetics | | Research Stage | Preclinical | Approved/marketed as a topical cosmetic ingredient (Copper tripeptide-1) with supporting small human studies. Injectable use is preclinical/off-label, research-use-only, with no human clinical trials. | | Mechanism of Action | Finasteride's mechanism is mechanistically straightforward but systemically consequential: it is a potent, selective, irreversible inhibitor of 5α-reductase type II (and, to a lesser extent, type III), which are the enzymes responsible for converting… | GHK-Cu works mostly as a copper shuttle and a signaling peptide. It binds Cu(II) with high affinity (log K around 16.4, close to albumin's 16.2) and can supply or regulate copper for copper-dependent enzymes like SOD1, lysyl oxidase, cytochrome c oxidase, and… | | Half-Life | — | ~30-60 min (plasma; approximate legacy figure, no robust modern human PK study) | | Typical Dose Range | — | 200-500 mcg SC daily (community/RUO; no clinically established injectable dose) | | Dosing Frequency | — | Once daily subcutaneous; some run 5 days on / 2 days off. Topical: 1-2x daily to cleansed skin. | | Administration | — | Subcutaneous, Topical | | Side Effects | Finasteride's side effect profile requires honest, detailed discussion given the unusual intersection of well-established common transient effects, rare-but-serious effects, and the disputed post-finasteride syndrome phenomenon. Trial data, post-marketing… | Topical GHK-Cu is generally well tolerated; higher-concentration formulations (4-5%) raise the odds of irritation, redness, or stinging. Injectable use has no safety data from controlled trials; the main theoretical concern is copper accumulation with repeated… | | Molecular Weight | — | Free peptide (GHK): 340.38 Da (C14H24N6O4). Copper complex (GHK-Cu): 401.9 Da (C14H22CuN6O4, neutral 1:1 Cu(II) complex). | | Common Vial Sizes | — | 50 mg, 100 mg | ## Price tracking Tracking Finasteride prices since April 6, 2026. Trend chart unlocks once we have price snapshots from more than one day. ## Price History 4 data points - OF - BM - Half Nattys - BHG Labs ### Finasteride: potential benefits - No structured benefit list published. ### GHK-Cu: potential benefits - Stimulates type I collagen synthesis in human fibroblasts at low nanomolar-to-picomolar concentrations (PMID: 3169264) - Increases glycosaminoglycans (dermatan/chondroitin sulfate) and upregulates decorin in wound models (PMID: 11121126) - Modulates matrix metalloproteinases and their inhibitors, partially correcting the MMP-9/TIMP-1 imbalance in a smoke-induced emphysema model (PMID: 35936787) - Drives tissue remodeling and chemoattracts macrophages, mast cells, and capillary cells to injury sites (PMID: 18644225) - Modulates expression of ~4,000+ human genes via the Broad Institute Connectivity Map, including DNA-repair and antioxidant genes (PMID: 25302294) - Increases stemness and proliferative potential of epidermal basal cells and keratinocytes (PMID: 23019153) - Acts as an antioxidant and anti-inflammatory copper regulator in the context of aging (PMID: 22666519) - Broad skin-regeneration effects on collagen, proteoglycans, MMPs, and immune/endothelial cell recruitment (PMID: 26236730) ## Frequently asked ### What's the difference between Finasteride and GHK-Cu? Finasteride is a pharmaceutical that finasteride's mechanism is mechanistically straightforward but systemically consequential: it is a potent, selective, irreversible inhibitor of 5α-reductase type ii (and, to a…. GHK-Cu is a skin, hair & aesthetics that ghk-cu works mostly as a copper shuttle and a signaling peptide. it binds cu(ii) with high affinity (log k around 16.4, close to albumin's 16.2) and can supply or regulate copper…. The two differ in mechanism, half-life (not reported vs ~30-60 min (plasma; approximate legacy figure, no robust modern human PK study)), and typical dose range. ### Which has the longer half-life, Finasteride or GHK-Cu? Finasteride has a half-life of not reported. GHK-Cu has a half-life of ~30-60 min (plasma; approximate legacy figure, no robust modern human PK study). Longer half-lives generally mean less frequent dosing but slower on/off kinetics. ### Which is cheaper, Finasteride or GHK-Cu? Lowest listed price on BodyHackGuide: Finasteride from $39.99, GHK-Cu from $34.99. Prices are pulled from the vendor listings tracked on BHG and change frequently. See the compare tables on each compound page for the current set of offers. ### Can you stack Finasteride and GHK-Cu? Stacking depends on mechanism overlap, safety profile, and goals. Finasteride and GHK-Cu should only be stacked after reviewing each compound's individual protocol page, side effect profile, and any published interaction data. Use the BodyHackGuide stack builder for a structured review before combining research compounds. ## See current vendor prices Listings from the vendors we track. Prices change often, so check the vendor before you buy. Finasteride prices: https://www.bodyhackguide.co/compound/finasteride?tab=prices GHK-Cu prices: https://www.bodyhackguide.co/compound/ghk-cu?tab=prices Compare all compounds: https://www.bodyhackguide.co/compare ### Before you buy Finasteride or GHK-Cu Check the vendor trust score. Every supplier we track is rated 0-100 on COA verification, payment transparency, shipping, reviews, and listings: one published, reproducible methodology, applied to every vendor. View Vendor Scorecard (https://www.bodyhackguide.co/vendors/scorecard) ## Related comparisons GHK CU vs AHK CU: https://www.bodyhackguide.co/compare/ghk-cu-vs-ahk-cu Minoxidil vs Finasteride: https://www.bodyhackguide.co/compare/minoxidil-vs-finasteride **Research use only.** BodyHackGuide is a research and price-comparison reference. The compounds discussed on this page are not approved by the FDA for human consumption and are sold strictly for laboratory research. 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