Nature Made Multi for Him 50+ and Kirkland's Signature (distributed by Costco) are two USP Verified multivitamins for men over 50. In choosing the best multivitamin among these, there are a few ...

The biggest winner: Costco's Kirkland Signature ... too small to have any effect. Consider a multivitamin geared to your age or gender. Men's and senior formulas usually don't contain iron ...