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what is ghk cu good for Amazon.com: The Ordinary Multi-Peptide + Copper Peptides 1% GHK-Cu Copper Peptide: Dosage, Before
Description
Vitamin B12 is found in meat, fish, eggs, and various dairy products

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The optimal dosage for B12 injections depends on different factors
To completely restrict access to vitamins and minerals would require fatalistic restrictions on essentially all solid foods

(2015a)

Still, that does not mean injections are right for everyone, nor should they be treated casually