What Makes a Fish Oil Supplement Effective

What Makes a Fish Oil Supplement Effective (2:33)

Dr. Oz explains how fish oil supplements can benefit brain health. Then, NFL running back Rashad Jennings discusses the effectiveness and recommended dosage of USANA BiOmega fish oil supplements.

Vitamins

The Easy Way to Get More Vitamin D

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The New Supplement That’s More Than Just a Multivitamin

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The Symptoms of a Vitamin B12 Deficiency

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The Key Nutrient You Need If You’re Fatigued

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How to Pick the Right Vitamins

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The Best Ways to Boost Your Vitamin B12

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Why Your Body Needs Vitamin B12

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3 Vitamins Worth Taking

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Boost Your Vitamin B12 Levels With This Fruit

2:20
The Importance of Micronutrients

3:03

Is This Nutrient Deficiency Giving You Anxiety?

2:47

Do You Need More Vitamin D?

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How Much Vitamin D Should You Take?

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Best Time to Take Your Calcium Supplement

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Load Up on Magnesium to Lower Blood Sugar

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What Makes a Fish Oil Supplement Effective

2:33

Where to Store Your Vitamins

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Daylight Savings Time Change Increases Vitamin D Deficiency

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What's the Deal With Gummy Vitamins?

3:33

4 Things to Know Before Taking Herbal Remedies

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Are You Getting Enough Zinc?

1:08
Does a Multivitamin Make Sense for You? It Depends

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Take Your Vitamin D at This Time

1:23

Will Supplements or Vitamins Help Fight Heart Disease?

1:25
Get Your B Vitamins to Boost Memory and Prevent Alzheimer's

1:18

Get Smart About Herbal Supplements

1:10

What Vitamins Should a Woman Over 50 Be Taking?

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Not All Fish Oil Is Created Equal

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What Is an International Unit?

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Are Multivitamins Safe?

3:17
Should I Take My Vitamin Supplements In Liquid, Powder, or Tablet Form?

1:00

Why Do Some Vitamins Make Me Nauseous?

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What Vitamins Should I Take to Slow Aging?

0:44
What Vitamins Might Help with Memory?

1:09

Is the Blood Level of Vitamin D in the Body Related to Cancer Risk?

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Vitamin C for Stronger Eyes

1:05
How Can I Lift My Mood?

4:06

Can Vitamin Therapy Help Treat ADHD?

0:37

Which Vitamins and Minerals Can Help Me Sleep Better?

1:17
How Much Calcium Do I Need Every Day?

1:04

Are B12 Shots Better Than B12 Supplements?

4:41

What Vitamins Can I Take to Boost My Energy?

1:47
How Much Iron Do I Need In My Diet Each Day?

1:50

If I Could Only Have One Vitamin, Which One Should I Take?

1:06

Why Should I Consume Vitamin D If I Want to Lose Weight?

1:06
Get Vitamin E from Food, Not Dietary Supplements

1:13

Which Vitamins Are Most Important for Healthy Skin?

0:36

Can I Get Enough Vitamin D Through Exposure to Sunlight?

0:50
How Much Vitamin D Should I Take Each Day?

0:46

Can Vitamin D Prevent Alzheimer's Disease?

0:49

What Are the Symptoms of Vitamin B12 Deficiency?

0:35
Which Food Can Help Make Up a Vitamin E Shortfall In My Diet?

2:00

Does Vitamin D Reduce the Risk of Heart Disease?

1:02

Which Foods Are High In Vitamin K?

0:55
How Much Sun Is Needed to Keep Healthy Vitamin D Levels?

1:18

What Are Health Benefits of Vitamin D?

0:37

What Are the Health Benefits of Vitamin Supplements?

0:27
How Does Where I Live Affect How Much Vitamin D I Get?

0:19

How Is Vitamin B12 Deficiency Treated?

2:49

Why Is It Important for Children and Preteens to Get Enough Vitamin D?

0:46
Will a Vitamin D Deficiency During Pregnancy Hurt My Baby?

0:27

How Can I Make My Skin Glow?

1:37
What Is the Recommended Dietary Allowance (RDA) of Vitamin B12?

0:38
How Important Is It for Me to Take Prenatal Vitamins During Pregnancy?

0:41
Can You Take Too Much of a Vitamin or Mineral?

1:03

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About Vitamins

Our experts agree it’s best to get vitamins and other nutrients from your diet, not dietary supplements. But sometimes it makes sense to take a vitamin, especially if you're deficient in vitamin D, omega-3 fatty acids and certain minerals.

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Ask The Expert

Frances Largeman-Roth, RD

Your Expert Guide to
Diet & Nutrition