Interactions Explorer
What to avoid.
Peptides interact with common medications — blood thinners, insulin, blood-pressure drugs among them. Pick a peptide to see what it clashes with, filtered by severity.
3 matches
Focus peptide
GHK-Cu
Skin, collagen, wound repair
Contraindications — do not use if
- Wilson's disease or any disorder of copper metabolism
- Known copper allergy
- Pregnancy and lactation — no data
Vitamin C (topical)
Caution / monitorOther
Ascorbic acid reduces the copper and inactivates the complex. Apply at different times of day.
Zinc supplementation
InformationalOral drug absorption
Zinc and copper compete for absorption; high-dose zinc can deplete copper.
Retinoids (topical)
InformationalOther
Commonly layered, but combined irritation is the usual reason people abandon both.
Interaction categories and severities are inferred from published notes and are not a substitute for a clinician review. Absence of a listed interaction is not evidence of safety — always cross-reference for any drug you take.