Methylcobalamin (Methyl B-12) is better absorbed and retained than other forms of B12 (e.g., cyanocobalamin). Methyl B-12 supports nerve tissue and brain cells, promotes better sleep and recycles (via methylation) homocysteine, an oxidizing metabolite, back into the amino acid methionine. Also, vegetarians/vegans often require B12 supplementation. Directions: Dissolve in mouth or chew 1 lozenge per day or as directed by your qualified healthcare professional.