Those who follow a vegetarian or vegan diet are more likely to be deficient as Vitamin B12 is mainly found in animal-based products
Prioritize GHK-Cu if: You're primarily concerned with visible wrinkles, skin laxity, photodamage, post-procedure recovery, or compromised barrier function
They look for signs like better blood counts and less nerve problems
But at higher doses like 5mg per week, that same vial lasts only two weeks, meaning nearly half the reconstituted solution never gets used before the 28-day limit if you are only at the start of your protocol
However, it requires understanding basic formulation principles
A note on price Generally, prices for vitamin B12 range from $0.10 to $1.00 per serving, or $7 to $30 per container