Drinking ampoules with L-carnitine (1000 mg) plus zinc (3.8 mg) and magnesium (75 mg). Zinc is a mineral with very diverse functions. Primarily, it serves the function maintenance of a normal protein synthesis and carbohydrate metabolism. It plays a role in the normal function of the immune system, protects the cells from oxidative stress and serves a normal DNA as well as normal protein synthesis (among others muscle maintenance). Magnesium serves the maintenance of normal muscle function, supports the electrolyte balance and contributes to a reduction of tiredness and fatigue. Die vitamins B2, B6, B12 and C also contribute to a normal energy metabolism.