Is GHK-Cu with zinc thymulin legal in Canada?

A compounded scalp dropper serum, commonly 5 mg/mL of copper peptide with 10 micrograms/mL of zinc thymulin, so the copper peptide outweighs the thymic peptide 500 to one. Neither component has a published randomised trial for hair growth in people, and the combination has never been tested. The thymulin hair evidence is human follicles in a dish.

Hair loss clinics and compounders sell this as a leave-on scalp serum, typically in a 25 mL dropper bottle. The stated concentrations are usually GHK-Cu 5 mg/mL with zinc thymulin 10 micrograms/mL, and that ratio is the fact this page exists to point at.

Mechanism: GHK-Cu delivers copper to tissue and drives collagen and glycosaminoglycan production in culture and in rodent wound models, with claimed effects on follicle size and perifollicular vasculature. Thymulin is a nine amino acid thymic peptide that requires zinc for activity, and its zinc-bound form is the one used in these serums; the hair rationale comes from organ culture work showing thymic peptides modulate human follicle growth.

Regulatory history: Sold as a cosmetic or as a compounded topical preparation. Neither component is an approved drug for hair loss; the approved topical for androgenetic alopecia is minoxidil.

Authorises drugs for sale through a Notice of Compliance and Drug Identification Number. A compound that is not authorised for sale cannot lawfully be sold for human use, and personal importation of prescription drugs is limited.

The classification above is the The Longevity Archive reading of Health Canada, Health Products and Food Branch listings for GHK-Cu with zinc thymulin at the reviewed date, not a legal opinion. Rules change, and importing, prescribing and possessing a compound can each be treated differently. Check the regulator directly before acting on anything here.