The Vitamin B12 Supplement, 5,000 mcg, may support energy use as well as the health of the nervous system and other essential functions. The suggested use for adults is one tablet daily, preferably with a meal. Allow the tablet to dissolve under the tongue for 30 seconds before swallowing. These fast-dissolving tablets are free from gluten, wheat, dairy, eggs, fish, shellfish, tree nuts, peanuts, soy, yeast, artificial colors, and preservatives.