And if the One-a-Day Men's multivitamin is the same as this one, https://www.oneaday.com/vitamins/vitamins-for-men/multivitamin-for-mens-health https://www.onea

And if the One-a-Day Men's multivitamin is the same as this one, https://www.oneaday.com/vitamins/vitamins-for-men/multivitamin-for-mens-health https://www.oneaday.com/vitamins/vitamins-for-men/multivitam..., then you're getting 120mg of Magnesium Oxide (see the Ingredients list at the bottom of the Supplement Facts image)