Zinc for a functioning immune system In cases of zinc deficiency that cannot be corrected through diet, the effervescent tablets ensure an adequate supply of zinc. After iron, zinc is the second most abundant trace element in our bodies. Almost all body cells contain zinc, as it plays a vital role in metabolism as an active component of over 300 enzymes. Zinc deficiency can also weaken the immune system, causing symptoms such as skin eczema, delayed wound healing, and circular and diffuse hair loss. Application: Dissolve one effervescent tablet in a glass of water once a day and drink it completely after a meal.