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So that was wonderful

GHK-Cu works gradually, producing cumulative benefits over time

Last reviewed: May 12, 2026 Last updated: May 12, 2026 Written by: Jay Hastings, CEO of PlexusDx Jay Hastings is the CEO of PlexusDx, a precision health company focused on genetic testing, blood biomarker insights, and personalized wellness recommendations

Seasonal considerations matter too

The tirzepatide peptide itself can contribute a very faint yellowish tint at higher concentrations, though this is usually overwhelmed by the pink from B12 when both are present

Taking high doses of B6 over a long period has been linked to sensory nerve problems, and national guidance sets an upper limit for adults to avoid that risk