Swanson Magnesium Oxide dietary supplement is intended to supplement the adult diet with magnesium. The recommended daily dose of the preparation (2 capsules) contains 400 mg of this active ingredient, which corresponds to 107% of the Reference Intake Value for an average adult. Swanson Magnesium - the effects of magnesium Magnesium contributes to maintaining proper energy metabolism and reducing the feeling of tiredness and fatigue. It helps maintain electrolyte balance, healthy bones and teeth, proper muscle function, and supports the proper functioning of the nervous system. It also supports the maintenance of electrolyte balance and plays a role in maintaining proper psychological functions. The dark plastic packaging contains 250 capsules of the preparation.