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Abdominal pain, nausea, vomiting, diarrhea, and vertigo have also been reported, and one trial found that the incidence of nausea, vomiting, and vertigo was dose-dependent (77)
On non-treatment days within the cycle, GHK-Cu's daily topical (if you use one) layers under retinol at night without conflict
This review looks at the molecular composition, mechanism of action and research applications of both substances, essential information for researchers in this field
1992, Plenum Press: New York, 195-231
They also contain higher amounts of vitamins and nutrients that can help sustain healthy glutathione levels