Nutritional supplements
Learning Center
Vitamin D toxicity: What if you get too much?
Understand the risks of too much vitamin D, including a toxic reaction.
Dental floss vs. water flosser: Which is better?
Cleaning between your teeth every day is an important part of good oral health.
When to brush your teeth
When should you brush your teeth? Learn how to protect your oral health.
Tetanus shots: Is it risky to receive 'extra' boosters?
For adults, tetanus shots are recommended every 10 years.
Calcium supplements: When should they be taken?
Timing matters when taking these supplements. Learn how to take them.
Can vitamins help prevent a heart attack?
Study results are mixed on whether vitamins can prevent heart disease. Find out more.
Henoch-Schonlein purpura
Learn about the symptoms, causes and treatment of this blood vessel disease, also called IgA vasculitis, that causes a purplish rash on the lower legs.
Do the benefits of vitamin C include improved mood?
You know vitamin C helps fight the common cold. But did you know that vitamin C might also help improve your mood?
Flaxseed: Is ground better than whole?
Nutrition experts recommend ground flaxseed over whole flaxseed. Find out why.
Fiber supplements: Safe to take every day?
Fiber supplements are one way to add fiber to the diet. Here are some tips for using them safely.
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