Take each claim to the record that can answer it.

For an approval claim, ask about the finished product

As of September 26, 2026, a listing in the drug-code directory from FDA (the US Food and Drug Administration) did not mean a product was approved.

For GHK-Cu, the application search on September 30, 2026 found no approved medicine.

Ask for the approval record that matches the finished product being proposed. A code for an ingredient leaves a different question open.

For a licence claim, use the matching board

Medical-board records describe physician licences and public disciplinary history, while pharmacy boards hold pharmacy licence records.

Links for finding these boards were reviewed September 17, 2026. Match your professional’s or pharmacy’s name to the board for the right state.

Match the full name and the state. If the role is a different profession, ask which board holds that record.

For a study claim, ask what was measured

Reviews from 2025 and 2026 describe limited human GHK-Cu evidence, mostly from small facial-cream trials.

Read who took part, what product was tested and what changed. Ask whether the people studied, the way the product was used and the result match the offer in front of you.

Take the question back to the conversation

A record can answer a narrow question about approval, permission or a study. Ask the treating professional to explain how that answer relates to the care being proposed for you.