Addall XR contains vitamins B1, B2,B6 and utilizes GABA, a neurotransmitter that regulates activity of neurons to reduce anxiety, and Bacopa Monnieri, a nootropic herb that has been used in traditional medicine for cognitive enhancement. Combined together you have a supplement that keeps you focused for hours at a time. Adults should take 1-2 capsules as needed and NOT exceed 4 capsules in a 24 hour period.