Vitamin D3 Benefits

The many benefits of Vitamin D3 are slowly becoming more and more well known, and its involvement in most of the body's vital processes is now being recognised.

Your Guide to Vitamin D3:

– What is Vitamin D3 and What Does it Do?

– Where does Vitamin D3 Come From?

– Why is Vitamin D3 Better than Vitamin D2?

– What is a Healthy Level of Vitamin D3?

Visit our Vitamin D3 online store to for a selection of  Vitamin D3 supplements, including tablets, capsules and liquids.

What is Vitamin D3 and What Does it Do?

Vitamin D3 is produced naturally in the skin when it is exposed to sunlight, hence its nickname the ‘Sunshine Vitamin’. Although classified as a vitamin, D3 transforms into a hormone within the body. In this form, it is circulated in the bloodstream to help in the absorption of calcium and phosphorous that is received from digested food sources.

Calcium is used for building and strengthening teeth and bone mass and is vital for bone development and growth. It can be stored in the body tissue until it is required. In addition, Calcium also has a role to play in the production of hormones in the body by transmitting nerve impulses to the brain. Almost 99% of your Vitamin D supply is used for regulating the calcium in the body; the remaining part is utilised for strengthening the immune system and maintaining muscle strength.

Some controversy has arisen whether Vitamin D2 is as active as vitamin D3 when it is ingested, but the consensus is that D3 is two to three times as potent in raising the level of 25-hydroxycholecalciferol (the chemical name for Vitamin D3).

Take a look at our video below to learn more about Vitamin D!


How Vitamin D3 Benefits the Body

Aside from regulating the amount of calcium and phosphorus in our blood, Vitamin D carries several benefits to our overall health and wellbeing.

It contributes to healthy function of our immune systems and plays a role in the process of cell division. It also ensures the maintenance of healthy bones and teeth.

Vitamin D is essential for children’s development, playing a vital role in the normal growth and maintenance of their bones and immune systems. Learn more about the benefits of Vitamin D for children.

Where does Vitamin D3 Come From?

Vitamin D comes from three major sources:

The Sun

Four major factors determine the effect of sunlight on your vitamin D level:

Time of year – in the summer, the sun’s rays are more direct and direct rays are more effective in raising your skin’s production of vitamin D.

Your Latitude on the Earth – if you are closer to the equator then you will get direct sunlight for a longer time each day and for more months out of the year.

Obstacles to sun exposure of your skin – Whether it be clouds, dark skin colour, smog, a hat, an umbrella, or suntan lotion, anything that limits the exposure of your skin to ultraviolet light significantly reduces your production of vitamin D in the skin.

Altitude – the higher you are, the less atmosphere there is to block the sun’s rays. 


Vitamin D is a fat-soluble vitamin that that dissolves in oil and not in water. This means that oily foods like wild salmon, cod liver oil and mushrooms are the best sources of vitamin D.


If you can’t get enough vitamin D from your diet, you can get all the vitamin D you need from supplements.

SunVit-D3 Vitamin D – The Science

With the introduction of SunVit-D3, Sunvit-D3 Limited has set a new scientific standard for preparations sold as health supplements.

SunVit-D3 has excellent bioavailability in the oral supplement sector; the unique composition and quality of SunVit-D3 Vitamin D3 preparations have, in recent studies, been shown to be essential for the bioavailability of the compound.


Are you getting enough Vitamin D?

Why is Vitamin D3 Better Than Vitamin D2?

Vitamin D comes in two forms, Vitamin D2 – ergocalciferol, and Vitamin D3 – cholecalciferol. The main difference between them is where they come from and how they are made.

Vitamin D2 is produced by plants, whereas Vitamin D3 is most commonly found in humans and animals. It’s the biologically active version of the vitamin, produced in our skin when exposed to sunlight.

Vitamin D2 is cheaper to produce, so when you see certain foods fortified with vitamin D, such as cereals or orange juice, it’s almost always done so with vitamin D2. However, it’s considered a lower quality source of vitamin D.

Although you need both types, Vitamin D3 is considered as a higher quality source of vitamin D and more important to our wellbeing. However, because it is almost always found in animal products, it can be difficult for vegans to ensure they maintain adequate levels in their diets – learn more about Vitamin D & Vegan Health.

SunVit-D3 Vitamin D Is Safe and Efficient

SunVit-D3 Vitamin D3 is currently the only Vitamin D3 supplement with substantial scientific evidence on both efficacy and safety. With the introduction of SunVit-D3 preparations, Sunvit-D3 Limited can provide customers with one of the most superior products available.

Shop our range of tablets, capsules and liquids now!

What is a Healthy Level of Vitamin D3?

The recommended daily maintenance dosage is 400IU daily (or 10mcg) as outlined in the NICE (National Institute for Health and Care Excellence) guidance. The guidance was developed to ensure that the UK population has a satisfactory level of Vitamin D throughout the year, in order to protect musculoskeletal bone health.

For children: the NHS advises that babies up to the age of one year need 8.5-10mcg of vitamin D a day. From one year of age, this goes up to 10mcg a day for children.

Nutritional adequacy for Vitamin D is based upon the measurement of the metabolite 25-Hydroxyvitamin D. Leading experts recommend that 25-Hydroxyvitamin D concentrations should be at least 75-80 nmol/L (30-32 ng/mL).

Am I Getting Enough Vitamin D?

Everybody is different and individual vitamin D levels can vary depending on the time of year, your job (i.e. how much daytime you spend indoors), your clothing and and even your skin type.

If you’re unsure about your levels of vitamin D, there’s a simple blood test you can take at home. Simply follow the instructions included in the blood test kit, and the level of vitamin D in your sample will be analysed by a UK NHS lab.

Are you getting enough Vitamin D?

Dosage Guidelines

The new recommended levels of 25-hydroxyvitamin D can be achieved with the administration of daily doses of Vitamin D3 that are substantially higher than those found in common multivitamins and calcium supplements.

Considering trials and research, it is recommended that to maintain the correct levels of 25-Hydroxyvitamin D, one or two SunVit-D3 1000 IU Tablets are taken per day with the main meal. Once the body has the correct levels of 25-Hydroxyvitamin D, it will flush out any that is not needed.

Higher strength doses can be taken weekly, however, we strongly recommend that you first seek medical advice before taking higher doses.

Fatty fish, vitamin supplements and calcium supplements containing Vitamin D can all be taken along with SunVit-D3 without any major risk of Vitamin D overdose (see FAQ –Can I overdose on SunVit-D3). The safety of daily doses ranging from 25 to 200 µg (1000-4000 IU) has also been documented.


Visit our Vitamin D3 online store to for a selection of  Vitamin D3 supplements, including tablets, capsules and liquids.


Want to learn more? Watch our video on the journey of a Vitamin D tablet!

Why Choose SunVit-D3?


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