Dietary supplement for the supply of zinc, obtained by fermentation of Koji. The main benefit is that it strengthens the immune system. It is an essential mineral for the body to react correctly when it has to act against infections. It is an essential micronutrient for the body and is essential for tissue regeneration and DNA synthesis. It plays an activity in the skeletal system, helping to develop bones in the early years and helping to combat degeneration in adulthood. It also has multiple benefits for the skin and hair. The lack of zinc is reflected in premature aging of the skin, nails and hair. It is a gluten-free and dairy-free product, and suitable for vegans and vegetarians.