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

Many people take vitamins and supplements while they are being treated for cancer; some take them to prevent cancer. Here are tips to help you shop wisely.

Vitamins and Supplements to Fight Cancer

Cancer patients are increasingly turning to supplements to strengthen their immune systems and ease nausea from chemotherapy.

Vitamin D

Vitamin D is one of the most studied supplements for cancer prevention and treatment right now.


Vitamin A , vitamin C, vitamin E , and beta-carotene contain antioxidants once thought to help prevent cancer. However, more recent studies show that high levels of these, in supplement form, may increase cases of gastrointestinal cancers, such as stomach, colon, and esophageal, in some populations. However, eating foods that contain these vitamins reduces the risk of many kinds of cancer.

Fiber (Psyllium)

Dietary fiber helps ease constipation, which may be caused by some cancer medicines.

Folic Acid

Folic acid helps reduce the toxicity of the cancer drug methotrexate. However, in men, high levels of folic acid may raise the risk of prostate cancer.


Iron supplements can improve the fatigue caused by iron-deficiency anemia, which can result from chemotherapy and radiation.

Information About Vitamins and Supplements

Do you know how to evaluate vitamins and supplements? There are so many vitamins, supplements, and herbal extracts on the shelves. Use these tips to find out which ones may be right for you.

Safe Upper Limits for Vitamins and Minerals

When it comes to vitamins and minerals, how much should you take? Find out the safe upper limits for the vitamins you take, as well as the recommended daily allowance you may need.

Vitamin and Supplement Glossary: Common Definitions

This glossary provides simple definitions for common terms such as antioxidants, fat soluble, or phytochemicals. Find out what the lingo really means.

WebMD Medical Reference

Healthy Recipe Finder

Browse our collection of healthy, delicious recipes, from WebMD and Eating Well magazine.

Top searches: Chicken, Chocolate, Salad, Desserts, Soup

Heart Rate Calculator

Ensure you're exercising hard enough to get a good workout, but not strain your heart.

While you are exercising, you should count between...