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How to Choose the Best Vitamin D Supplement

Vitamin D is a crucial ingredient for bone health, as it facilitates the absorption of calcium and phosphorus. Vitamin D also plays an important role in the development of children, and in healthy aging.

Unfortunately, factors such as insufficient time in the sun and the use of sunscreen means that many of us are deficient in vitamin D. Supplements therefore represent a safe and cost-effective way to meet your body’s daily needs.

Top Selling Vitamin D Supplements

We’re all different, so here at Simply Supplements we work hard to offer a broad range of different vitamin D supplements. All the same, if you’re looking for a great place to start then here are some of our most popular options...


Vitamin D3 Tablets 2,000iu

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£14.79

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Vitamin D3 Tablets 5,000iu

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£13.99

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A to Z Multivitamins & Minerals

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£16.89

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How Much Vitamin D Do You Need?

The Department of Health recommends that a supplement containing 10mcg of vitamin D should be taken daily during the darker months. However, many leading experts believe this is too low and recommend 25-50mcg daily.

For reference, many vitamin D supplements list their contents in “international units” or IUs.

1mcg of vitamin D equates to 40 international units, meaning you should look for supplements offering at least 400 IUs for general use.






Vitamin D2 versus Vitamin D3

You’ll notice when looking at supplements that there are two different types of vitamin D supplements - D2 and D3. So what are the differences, and which is “best”?

Vitamin D2 is derived from plants, whereas vitamin D3 is the compound that our body creates in response to sunlight. Vitamin D3 supplements are derived from sheep’s wool and therefore are suitable for vegetarians, but not vegans.

Research has shown that vitamin D3 is more effective at increasing vitamin D stores in the body than D2. So if you are a vegan or choose to take D2, you will need to consume a greater dose relative to D3 to see the same benefit.

Popular Vitamin D3 Supplements


Vitamin D3 Tablets 5,000iu

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Our strongest vitamin D3 supplement.


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Vitamin D3 Tablets 2,000iu

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High strength maintenance
formula.


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Calcium 500mg & Vitamin D3 200iu Tablets

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Includes beneficial calcium for bone health.


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Vitamin D2 Supplements for Vegans


Vitamin D2 Tablets 5,000iu

vitamin-d2-5000iu

Our strongest vitamin D2 supplement.


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Vitamin D2 Tablets 2,000iu

vitamin-d2-2000iu

High strength maintenance
formula.


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Vitamin D Tablets 400iu

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Meets the Department of Health recommended dose.


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Perfect Partners

Vitamin D is most commonly taken to support strong, healthy bones. However vitamin D doesn’t work alone in this regard. A number of additional nutrients are also involved in this process; so many individuals opt to combine their vitamin D supplement with other synergistic ingredients.


Calcium 500mg & Vitamin D3 200iu Tablets

calcium-500mg-vitamin-d3-200iu

Vitamin D helps the body to absorb calcium from the diet, which is then used to build strong bones and teeth. To ensure a ready supply, some customers opt to combined vitamin D with calcium.


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