Health Concern On Your Mind?
See what your medical symptoms could mean, and learn about possible conditions.
Drugs & Supplements
Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.
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.
Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.
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.
Read expert perspectives on popular health topics.
Connect with people like you, and get expert guidance on living a healthy life.
Sign up to receive WebMD's award-winning content delivered to your inbox.
Reviewed by Melinda Ratini on October 30, 2017
National Osteoporosis Foundation: "Calcium/Vitamin D."<br><br>University of Maryland Medical Center: "Vitamin D."<br><br><br><br>Mayo Clinic: "Vitamin D."<br>Vitamin D Council: "How do I get the vitamin D my body needs?"<br><br>NIH Office of Dietary Supplements: "Vitamin D."<br><br>Kidshealth.org: "Vitamin D."<br><br>PubMed: "Vitamin D for Influenza."<br><br>ScienceNews: "Vitamin D is a flu fighter."<br><br>Harvard T.H. Chan School of Public Health: "Vitamin D and Health."
© 2016 WebMD, LLC. All rights reserved.
How to Treat Your Symptoms
Find allergy relief tips for yourself and your family