In humans, cyanocobalamin must undergo intracellular enzymatic conversion to the active coenzyme formsmethylcobalamin and adenosylcobalaminwhich, depending on the pH environment, can interconvert with hydroxocobalamin (Gherasim et al., 2013), the most common B12 form in both food and human plasma (Obeid et al., 2015)
I believe a lot has to do with the source and purity of the product
It is also worth being clear about who the combo suits
Standard GHK-CU dosing protocols Most protocols recommend 1 to 2 milligrams daily
accordion-item-end Ingredients Water, VG, Natural Flavourings, Acidity Regulators (Citric Acid, Malic Acid, Trisodium Citrate), Sweetener (Sucralose), Stabiliser (Xanthan Gum), Iron, Vitamin B12.accordion-item-enddelivery-accordionaccordion-end Country of Origin: USA Manufacturer/Importer/Packed By:Hitamins
With this pace, convenience is key