B Vitamins – B-100 Complex – 100 Tablets B100 complex vitamins derive their name from the fact that they contain most of the B vitamins in 100-mg doses. This can be as much as 6,666 percent of the daily value for some B vitamins, such as vitamin B1, based on a 2,000 calorie per day diet. However, B-complex vitamins are water-soluble and unless you have a medical condition that might interrupt the process, your body disposes as waste any excess levels you consume. B-100 Complex Helps: Provide energy Help you reduce stress Assist with heart disease Dementia Reduce Birth Defects