Since animal products are the richest sources of B12, B12 supplements are more commonly recommended for those who follow a vegan or vegetarian diet, as opposed to a Paleo diet
It is better suited to larger, heavier, or more power-hungry builds where higher voltage helps deliver strong performance without forcing extremely high current through the system
This is personalized, patient-centered medicine
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Moreover, further studies are needed to investigate the optimal dosing regimen and therapeutic concentrations of these two drugs