Getting the dose right matters: too little may do nothing, while more than needed wastes product without clearly improving results
Food and Drug Administration (FDA) has cited the Clayton, North Carolina facility of Novo Nordisk for issues with their quality control
B12 helps your body turn food into usable fuel and supports healthy red blood cells, so refilling a low tank often helps you feel less run-down
It roughly doubles to triples your chances of quitting compared to placebo
Consider the potential for concomitant drugs to interfere with vitamin B12 and folate diagnostic blood assays [see Drug Interactions (7)]
Many ingredients, such as green tea, guarana, bitter orange and Garcinia, may harm the baby or reduce milk supply, and their benefits are not proven 28