copper peptide ghk cu serum with 1% GHK-Cu peptide, Argireline and Matrixyl 3000 looking skin over time The Ordinary Multi-Peptide + Copper

APPROVED Analyst ID: ZH-433 RPh: A-10367 2026-02-18 Reviewer ID: QR-109 RPh: A-40414 2026-02-18 QA Director ID: QA-465 Senior Engineer Cert

Biomarker Context: B12 Levels, Homocysteine, and Metabolic Status B12 status influences MIC B12 safety and efficacy

Oral doses tend to be higher - 500 mcg to 1000 mcg twice daily - because oral bioavailability is presumably lower than injectable, though we don't have good human pharmacokinetic data

Long-term safety and appropriate cycle duration have not been clearly established in human studies

Reducing Inflammation Inflammation from heavy training slows recovery and causes pain

Continue Reading Read our injectable B12 patient reviews