Dietary supplement. A long-acting, strong B vitamin tablet. B vitamins are water-soluble vitamins that are stored in the body in small amounts. That is why their daily intake is important. Vitamins can be obtained from versatile mixed food, but some B vitamins are easily destroyed during food preparation. The Betax B-Complex preparation contains all important B vitamins in strong concentrations. In addition, it is long-acting, meaning that the tablet releases B vitamins slowly in the intestines to meet the body's needs.