ordinary ghk cu serum Multi-Peptide + Copper Peptides 1% resilient skin The Ordinary Multi-Peptide + Copper

C.BouhnikY.et al (2014)

The most common side effects were: Nausea Vomiting Diarrhea Constipation Fatigue Abdominal discomfort Early satiety Injection site reactions Increased heart rate in the first 24 weeks, but that returned to normal after 24 weeks

Barrier compromise symptoms, including increased sensitivity to other products, unusual dryness, or flakiness, suggest copper peptide concentration is overwhelming skin's repair capacity

Some individuals stack Dihexa with compounds like Noopept, Phenylpiracetam, or modafinil to maximize cognitive gains

Zinc supplements compete with copper absorption and may affect GHK-Cu efficacy if taken at the same time