We’re giving out

Learn more about whether you’re likely to be getting the Vitamin D you need, based on where you live, your sun exposure, and other factors. Use the code FREE-D to get a free month’s supply of Vitamin D in your first Care/of order, in any pack over $15.

77% of people in the US aren't getting enough Vitamin D1.

Do you think you are?

Let's get started.

What part of the US do you live in?

The body produces Vitamin D from sun exposure, and people in different geographies produce different amounts of it based on cloud cover, weather patterns, and the angle with which sunlight hits the earth.... because science.

North
South

Most people in northern states don't get enough UV sun exposure to produce enough daily Vitamin D. Bummer. Unless...

Do you spend as much time as possible outside on sunny days, between 11am-3pm2?

Awesome!

You probably get lots of sunny days.

But do you spend 20-60 minutes per day outside soaking up the sun3?

Nope
I wish.
Yes
I like to bask.

Ok. Well, you can also get Vitamin D from certain foods, like beef liver, egg yolks, and fortified milk. But you need a lot of those foods to get enough Vitamin D each day4.

Does this sound like foods you eat every day?

No
Yes

Wow!

Cool. Chances are, you’re getting enough Vitamin D.

Lucky you!

You're probably producing enough Vitamin D each day through your body's own form of photosynthesis (pretty cool, right?).

BONUS QUESTION

What kind of Vitamin D do you think you’re producing?

D2 or D3?

Bingo! Because D3 is the form of vitamin D the body produces, it's the best form to supplement with.

You could use some Vitamin D

It's hard to get all the Vitamin D you need from your diet and sun exposure. But don't fret! Vitamin D supplements can help you get the daily recommended amount.

Get free Vitamin D

But why do I need Vitamin D anyway?

You’re good!

Between your diet and exposure to the sun, you're likely to be getting plenty of Vitamin D. Hurrah!

Take our quiz

Ok, cool. But why should I care?

Vitamin D is very important!

Vitamin D plays a tremendous role in the body, especially impacting your bone health, immunity, and heart health. Vitamin D deficiency can cause rickets, a weakening of the bones, teeth and muscles. It's so important for health that many foods are fortified with it, like cereal and milk, a practice that began in the US to help combat rickets. While extreme deficiency is now rare, over 70% of people still get less Vitamin D than is recommended by the FDA, according to a 2009 study.

Bone Health

Vitamin D is essential to maintain healthy bones because it helps your body absorb calcium and phosphorus.

Heart

Vitamin D has been shown to support cardiovascular function and protect the heart.

Immune System

A recent exciting study covering over 11,000 people linked Vitamin D to immune support.

Get your free Vitamin D

Supplements are an easy fix if you're not getting enough Vitamin D. Get a free month's supply with the code FREE-D when you build your first pack at Care/of (of $15 or more). Take our 5-minute quiz to determine what else belongs in your personalized vitamin packs, or build your own pack if you already know what you need!

Use promo code when checking out:

FREE-D

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Our Vitamin D

Our Vitamin D is fermented with organic yeast and foods to make it easier for your body to digest. It is gentle enough to take on an empty stomach.

Supports bone health

Adequate intake of vitamin D is essential to maintain healthy bones. Vitamin D is necessary for calcium and phosphorus absorption, which is why it is a major component of bone health.* Ingesting adequate calcium and vitamin D throughout life as part of a well-balanced diet may reduce the risk of osteoporosis.

View Research

Research by the Numbers

Number of studies

10

Double-blind placebo

Yes

Years of studies

'92–'21

Produced from the sun

Vitamin D is found in certain foods, and our bodies also produce it through exposure to sunlight. However, a number of factors impact the ability for people to get necessary levels of vitamin D through sun exposure. Factors that prevent people from getting sun exposure include wearing sunblock, cloud cover patterns, smog, and the angle at which the sun hits the earth where you live.

View Research

Research by the Numbers

Number of studies

1

Double-blind placebo

No

Years of studies

'21–'21

Helps keep your immune system strong

Several placebo-controlled studies have shown that vitamin D can regulate the growth and function of immune cells, which are critical for a healthy immune and inflammatory response. In one study, participants who were given 50 mcg (2,000 IU) of vitamin D saw a higher concentration of the immune cells responsible for strengthening our bodies’ natural defense system.*

View Research

Research by the Numbers

Number of studies

4

Double-blind placebo

No

Years of studies

'00–'18

No harmful extras

Our Vitamin D is formulated with no unnecessary additives or fillers.

Manufactured in the U.S.

Our Vitamin D is manufactured and encapsulated in the United States. We then issue a number of tests to ensure the finished product contains the correct levels of active ingredients and meets the Dietary Supplement Health and Education Act (DSHEA) for quality and safety.

1. A study from March 2009 published in the Journal of the American Medical Association found that 77% of the US population is receiving insufficient levels of Vitamin D.
2. Calculating the exact amount of Vitamin D requires precise inputs, including the cloud cover where you are on a given day and the angle with which the sun strikes the earth. However, in northern cities, especially in colder months, there is little UV light exposure to allow you to produce enough Vitamin D, and so it may be necessary to spend as much time outdoors as possible during peak sunlight hours.
3. Though UV exposure varies with the seasons, in most southern states in the US with moderate sun, it's possible to produce the Vitamin D you need with 20-60 minutes of sun exposure. The amount of time you need also depends on your skin type, the cloud cover in your area, and other factors.
4. If you rely on certain foods alone to supply the Vitamin D you need, you will have to consume a lot of those foods. We referred to the Good Wellness Project to calculate the amounts beef, eggs, and dairy needed each day to provide enough Vitamin D for a woman of 30 years, assuming no other foods are consumed.