Promote cellular energy production and support your nervous system health with Nature Made® Vitamin B12 1000 mcg. Formulated for those who may not get enough B12 through diet alone—such as vegetarians, vegans, and older adults—this supplement helps convert food into cellular energy and aids in the normal function of the nervous system.Backed by over 50 years of nutritional science, Nature Made is the #1 Pharmacist Recommended Vitamin & Supplement Brand. Each tablet delivers a potent 1000 mcg dose of Vitamin B12 (as cyanocobalamin) in a USP-verified formula, ensuring quality, purity, and potency.