Antioxidants, like ballplayers, must work together.(Knight Ridder Newspapers)

Q: How do I know how much vitamin C I should be taking?

A: For the first time, you have some guidelines at both the low and high ends of vitamin intake to help you.

The government recently released a report on recommended DRIs (Dietary Reference Intakes) for antioxidants, including vitamin C, vitamin E, selenium, and carotenoids (e.g., beta-carotene). The DRI is an amount considered adequate for most people.

The DRI is designed to replace the familiar RDA (Recommended Dietary Allowance). Actually, your vitamin container probably uses the term DV (Daily Value), so I suppose DV eventually may morph into DRI.

Included also is a new set of …