One-A-Day Men's Health Formula

Experts say most men can get all the iron they need from diet -- 8 mg per day – and reviews recommend One-A-Day Men's Health Formula multivitamins because they contain no iron. One-A-Day Men's Formula contains150 percent of the recommended daily value (DV) of selenium, which Bayer says may improve prostate health. However, the Center for Science in the Public Interest (CSPI) announced it June that it intends to sue Bayer Healthcare over these claims. According to CSPI, evidence shows that selenium does not prevent prostate cancer. Bayer says it is changing its advertising. Some user reviews note difficulty swallowing One-A-Day Men's Health Formula, because it is a large pill.

The amount of iron is a major difference between men's and women's vitamins; premenopausal women lose iron during menstruation cycles, so for women, reviewers prefer One-A-Day Women's (*Est. $20 for 250 tablets) which contains 18 mg of iron. The major differences between vitamins for men under age 50 and older men are the levels of B12 and Vitamin K, the latter being helpful in avoiding hip fractures. If you're over 50, reviews recommend Kirkland Signature Mature Multi 50+ (*Est. $13 for 400 tablets).

The best source of information about One-A-Day Men's comes from user reviews, because the multi hasn't been included in recent multivitamin tests. The Center for Science in the Public Interest doesn't test the multi, but they provide information on the supposed benefits of selenium. The free section of ConsumerReports.org's coverage of multivitamins contains all the information most people need to know -- that you can count on acceptable quality with brand-name or store-label multivitamins. User reviews are unscientific, but helpful for input on how easy it is to swallow the pill and how many people experience nausea.