GHK-Cu dosage for a small / toy breed

under 22 lb (10 kg)

The short answer

For a dog weighing under 22 lb (10 kg), the dose of GHK-Cu reported in the literature is 0.5-1 mg per day injectable, or topical twice daily, given daily (injectable) / twice daily (topical), over 4-8 weeks injectable, topical ongoing. It is studied in this weight class primarily for wound healing, skin and coat, post-surgical incisions. These figures are reported as published and are not recommendations — the dose for an individual dog must be set by a veterinarian who has examined the animal.

Typical breeds in this weight class

Chihuahua, Yorkshire Terrier, Dachshund, Pomeranian, Shih Tzu and similarly sized dogs generally fall within under 22 lb (10 kg). Weigh your dog rather than estimating — dosing is calculated per kilogram and an estimate that is out by a few kilos changes the figure materially, particularly at the smaller end.

Breed-specific risk in this weight class

Bedlington Terrier — Inherited copper storage disease — GHK-Cu contraindicated by the injectable route

Bedlington Terriers carry an autosomal recessive copper storage disorder caused by a COMMD1 gene deletion, which prevents normal biliary copper excretion and leads to progressive hepatic accumulation and cirrhosis. Injectable GHK-Cu introduces additional copper into a system already unable to clear it and should not be used. Topical application produces minimal systemic absorption and is the only route worth considering, with hepatic monitoring.

Before dosing at all

⚠ Copper storage disease in predisposed breeds

Bedlington Terriers and certain Labrador Retriever lines carry an inherited copper storage disorder. In these dogs the injectable route risks hepatic copper accumulation. Hepatic function must be monitored, and the topical route is strongly preferred.

Common questions

How much GHK-Cu for a small / toy breed?+

For a dog in the under 22 lb (10 kg) range, the reported dose is 0.5-1 mg per day injectable, or topical twice daily, given daily (injectable) / twice daily (topical), typically for 4-8 weeks injectable, topical ongoing. These figures are reported from the source literature and are not recommendations.

How often should a small / toy breed be given GHK-Cu?+

Daily (injectable) / twice daily (topical) is the reported frequency, over a course of 4-8 weeks injectable, topical ongoing. See the cycling guide for how breaks are structured.

Is GHK-Cu safe for a small / toy breed?+

GHK-Cu used topically is among the lowest-risk options on this site — systemic absorption is minimal and long-term use is generally considered acceptable. The injectable route carries a genuine, breed-specific hazard: Bedlington Terriers and some Labrador lines carry inherited copper storage disease, and any dog with hepatic impairment handles copper poorly. Baseline and follow-up liver values are the safeguard, and for localised problems the topical route usually makes the injectable question moot.

References

1.CANINE STUDYCanapp SO, et al. The effect of topical tripeptide-copper complex on healing of ischemic open wounds. Veterinary Surgery, 2003. PMID 14569578
2.Maquart FX, et al. In vivo stimulation of connective tissue accumulation by the tripeptide-copper complex in rat experimental wounds. Journal of Clinical Investigation, 1993. PMID 8227350
3.Pickart L, Vasquez-Soltero JM, Margolina A GHK Peptide as a Natural Modulator of Multiple Cellular Pathways in Skin Regeneration. BioMed Research International, 2015. PMC4508379
4.Pickart L, Margolina A Regenerative and Protective Actions of the GHK-Cu Peptide. International Journal of Molecular Sciences, 2018. PMC6073405

Other weight classes: GHK-Cu for a medium breed, GHK-Cu for a large / giant breed.

Educational information — not veterinary medical advice

Everything on this page is compiled from published peer-reviewed literature for educational and research purposes. It does not establish a veterinarian-client-patient relationship (VCPR) and is not a substitute for veterinary examination and diagnosis. Most compounds described here are investigational or used off-label and are not FDA-approved for these purposes in dogs. Extralabel drug use in animals requires a valid VCPR and the direct supervision of a licensed veterinarian under AMDUCA (21 U.S.C. §360b). Dosing figures are reported as they appear in the source literature and are not recommendations.