Nervous System Health Energy Production Cardiovascular Health Vegetarian/Vegan Support NOW Foods B-12, 1,000 mcg, 250 Lozenges: A Comprehensive Overview NOW Foods B-12, 1,000 mcg, 250 Lozenges is a dietary supplement designed to support nervous system health and energy production. It is particularly beneficial for vegetarians and vegans to prevent Vitamin B-12 deficiency.