Essential Zinc & Magnesium is a scientifically driven combination of the two trace minerals zinc and magnesium. It is often difficult to cover one’s daily requirements of zinc and magnesium through diet, which means it may be essential to boost this intake with a specific supplement. Zinc plays a crucial part in a number of bodily functions such as promoting a healthy immune system, supporting normal fertility and reproduction as well as normal macronutrient metabolism. Magnesium is also involved..