Vitamin B12 1000 mcg, plus folic acid by Solaray is in a base of sorbitol and natural cherry flavoring, dietary supplement. Vitamin B12 is needed for normal nerve cell activity, DNA replication, and production of the mood-affecting substance called SAMe (S-adenosyl-L-methionine). Vitamin B12 works with folic acid to control homocysteine levels. An excess of homocysteine, which is an amino acid (protein building block), may increase the risk of heart disease, stroke, and osteoporosis and Alzheimer’s disease. Vitamin B12 deficiency can cause fatigue, and some research indicates that individuals who are not deficient in this vitamin have increased energy after supplementation of vitamin B12. Ingredients - per lozenge: Folic Acid 400 mcg; Vitamin B12 1000 mcg Other Ingredients: Sorbitol, Natural Flavors and Magnesium stearate