benefits of ghk-cu Peptide GHK-Cu Dosage and Protocol: A
Description
Human exposure occurs through contaminated water, food, industrial emissions, and occupational activities such as mining and smelting [205]

Nailwal, H., Sharma, S., Mayank, A

In many cases, its fine to continue a multivitamin while on B-Complex injections, but it may not be necessary

doi: 10.1111/j.1440-1746.2006.04351.x