BIODIFeR is a dietary supplement based on Lactobacillus plantarum 299v, iron, vitamin C, and folic acid. Iron, vitamin C, and folic acid contribute to the reduction of tiredness and fatigue. Iron contributes to the normal formation of red blood cells and hemoglobin, and to normal oxygen transport in the body. Suitable for vegans. Directions for use: Take 1 capsule daily after one of your main meals (lunch or dinner).