You have many choices when it comes to multivitamin supplements, and they can vary greatly in quality.
One key way they differ is serving size.
A recommended serving size of only one or two pills a day may be a red flag that they don’t contain all the vitamins and minerals you need on a daily basis.
And many makers of one-a-day vitamins don’t include significant amounts of vital minerals, especially essentials like potassium and magnesium.