Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community


    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

Early Research Suggests That Sunlight in Small Doses May Protect Skin From Damage

Could Some Sun Be Good for Your Skin?

How Much Is Enough?

The answer to the question, ‘How much vitamin D do I need?’ depends on who you are and who you ask. Age, skin type, where you live, and the season of the year all affect vitamin D levels. Federal guidelines say adults should get between 200 and 600 international units (IU) of vitamin D each day, with recommended levels increasing with age.

Vitamin D researcher Michael F. Holick, MD, PhD, believes the optimal daily dosage for preventing disease is closer to 1,000 IU. Holick heads the Vitamin D Research Lab at Boston University and is the author of the book The UV Advantage.

Holick tells WebMD that he takes a 1,000-IU vitamin D supplement each day.

“It is not easy to get the vitamin D you need from foods unless you make a special effort,” he says. “A glass of milk or vitamin D-fortified orange juice has only about 100 IU of vitamin D, and a serving of salmon has only about 500 IU.”

Holick says most people can get more than enough vitamin D in the spring, summer, and fall by engaging in what he calls “sensible sun exposure” -- no more than five to 10 minutes of direct sun to unprotected legs and arms two or three times a week.

“We are not talking about burning in the sun,” he says. “No one is saying that is good for you.”

Brush up on Beauty

URAC: Accredited Health Web Site TRUSTe online privacy certification HONcode Seal AdChoices