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

Hypertension/High Blood Pressure Health Center

Font Size

Does Vitamin D Protect Against High BP?

Early Research in Young Women Suggests It Does

Vitamin D: The Super Vitamin continued...

And there is no consensus regarding the optimal supplement dosage of vitamin D. Most multivitamins contain 400 international units (IU) of the vitamin, but Griffin says much of the current research suggests that the optimal dosage may be closer to 10 times this amount.

“It may be time to consider the possibility that we need a more nuanced public health message about sun exposure so that we are not putting people at risk for skin cancer, but are also alerting them to the fact that a few minutes of exposure before they put on sunscreen may be a good thing,” she says.

More Study Needed, Experts Say

Study co-author and University of Michigan professor of epidemiology Mary Fran Sowers, PhD, agrees that the public health message advocating head-to-toe, 24/7 protection from the sun may need to change.

“We have recognized for a long time that it takes very limited sun exposure to get adequate vitamin D,” she says.

Hypertension expert Rhian M. Touyz, MD, PhD, of the University of Ottawa, says the idea that vitamin D levels decades earlier can influence blood pressure in middle age is intriguing but unproven.

“This definitely needs more study,” she tells WebMD.

Cardiologist Nieca Goldberg, MD, who directs the Women’s Heart Program at New York University, agrees.

“This research certainly raises some interesting questions,” she tells WebMD. “Vitamin D is important for the absorption of calcium and its role in bone health is proven. If we find out that it also helps prevent high blood pressure, that’s a real plus. But we aren’t there yet.”

1 | 2

Today on WebMD

blood pressure
Symptoms, causes, and more.
Learn the causes.
Compressed heart
5 habits to change.
Mature man floating in pool, goggles on head
Exercises that help.
heart healthy living
Erectile Dysfunction Slideshow
Bernstein Hypertension Affects Cardiac Risk
Compressed heart
Heart Disease Overview Slideshow
thumbnail for lowering choloesterol slideshow
Heart Foods Slideshow
Low Blood Pressure