ghk-cu lysyl oxidase | Research Peptide EU GHK-Cu Peptide Research: Benefits, Effects,
Description
It complements your Vitamin B Complex Liquid routine, supporting balanced energy and focus through clean, organic ingredients

It certainly wont hurt, since vitamin B12 doesnt cause problems at higher blood levels the way some vitamins do

With age, your stomach cells become less efficient and secrete less hydrochloric acid, which means you absorb less B12

If using both, apply them at different times for example, vitamin C in the morning and GHK-Cu at night or use separate treatment days