Neurobión~Essential B Complex Vitamins~60 Tablets~Nervous System Quality Care Neurotropic B vitamins are especially important for the health of the nervous system, which is why they are called "neurotropic." This group of vitamins is made up of thiamine (B1), pyridoxine (B6) and cobalamin (B12). These vitamins play different roles including supporting metabolism and helping to maintain, nourish and regenerate the nervous system that works 24/7 even when we are asleep. It is a combination of three neurotropic vitamins of the B complex (B1, B6 and B12), which are essential for the nervous system and its proper functioning. Any questions, please askThank you & Stay healthy