This B-Complex Multivitamin Formula by Natures Nectar Limited includes Vitamins B6, B12, Thiamine, Folic & Pantothenic Acid, Biotin, Niacin, Riboflavin, Choline, and Inositol To Support Natural Energy Production . I have been taking this B-Complex for a few weeks now, I am taking one in the morning with food as stated on the bottle. Since I have been taking this vitamin I have noticed I have more energy throughout the day. I also have recently had my fake nails removed that I... have had for years, my nails were in horrible shape. My nails have been breaking, peeling and are so thin. After taking this Vitamin B Complex with Biotin I have noticed my nails are much stronger and are not peeling anymore. My nails are growing again and I am wearing polish again. I have had no bad side effects while taking this vitamin overall I am happy with this B Complex* I received this item for a discount in exchange for an honest review