Now Methyl B-12 5,000 mcg supports energy production, homocysteine metabolism, and nervous system health. B-12 is helpful for vegetarians and those who do not eat much animal proteins (meat and dairy). This formula is vegetarian and vegan, non-animal derived. Recommended Use: Take 1 lozenge daily with a meal, or as directed by a healthcare professional. Chew lozenge or hold in mouth until dissolved and swallow.