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Vitamin D3 Supplements

The vitamin D supplement that everyone is talking about - chosen for the groundbreaking 'Coronavit' trial! 

The trial which will look at the effects of vitamin D supplementation on the immune system and protecting against Covid-19. This is a huge testament to the quality of our vitamin D supplements! You can read more about the trial on our article.  With so many vitamin D supplements to choose from,  why choose Pharma Nord?

The trial was also featured on the BBC news ! You can see the news report here which also talks about Pharma Nord Bio-Vitamin D:


Why Pharma Nord vitamin D3 supplements?

  • Documented bio-availability,  proven by science. Bio-Vitamin D3 has been featured in a number of clinical trials which prove their superiority when it comes to a D3 preparation
  • Dissolved in cold-pressed olive oil for maximum absorption. When it comes to supplements, absorption is key for performance

  • Manufactured to pharmaceutical standards - just like all of our products

  • Contain cholecalciferol -  a form of vitamin D that is naturally produced in the skin

  • Easy to swallow 'pearl' capusles.

Our video here also explains the difference between pharmaceutical standards and food grade supplements and the huge difference it can make in quality: 

What are the benefits of vitamin D3?

Vitamin D3 is a fantastic nutrient that's essential for our overall well-being and boasts a number of benefits, including:

  • Contributing to the support of the immune system. What's more, studies have shown that vitamin D may stimulate the body's production of anti-viral and anti-bacterial proteins.

  • Helping to maintain healthy muscles and nerves

  • Contributing to the maintenence of normal teeth and bones

  • Helping our bodies absorb calcium

What is vitamin D3?

vitamin d benefitsVitamin D3 is a fat-soluble form of vitamin D - when you produce this naturally, it's called cholecalciferol.

We produce vitamin D3 in our skin when exposed to adequate ultraviolet light from the sun. However, our modern lifestyles, which tend to keep us indoors, are depriving us of the sunshine we need. Unfortunately,  even the foods we eat rarely contain enough vitamin D3 - if any at all! 

Who might be deficient in vitamin D3?

So, what are the symptoms of a vitamin D deficiency? Fatigue, hair loss, back and muscle pain, and even depression can be symptoms of a lack of vitamin D3. More than one billion people worldwide are estimated to be deficient in vitamin D3. The UK government recommends a vitamin D3 supplement for several key groups of people, including:

  • People over 65 years of age

  • Those with low or no exposure to the sun

  • Pregnant and breastfeeding mothers

  • Young children from six months to five years old

Further information on vitamin D3 

Our In-House team including our Senior Nutritionist has written articles on Vitamin D3 :

Vitamin D3 Supplements:

The trade name of the preparation is Bio-Vitamin D3. It is sold as capsules packed in blister packs.

Bio-Vitamin D3 400IU - 120 capsules

Bio-Vitamin D3 800IU - 80 capsules

Bio-Vitamin D3 1000IU - 80 capsules

Bio-Vitamin D3 5000IU - 40 capsules

Bio-Vitamin D3 400IU declared content per capsule:

  • D3 Vitamin 10mcg (400IU)

Bio-Vitamin D3 800IU declared content per capsule:

  • D3 Vitamin 20mcg (800IU)

Bio-Vitamin D3 1000IU declared content per capsule:

  •  D3 Vitamin 25mcg (1000IU)

Bio-Vitamin D3 5000IU declared content per capsule:

  • D3 Vitamin 125mcg (5000IU)

Bio-Vitamin D3 400IU, 800IU and 1000IU:

  • Olive oil
  • Gelatine (Halal approved)
  • Glycerol
  • Purified water

Bio-Vitamin D3 5000IU:

  • Olive oil
  • Gelatine (Halal approved)
  • Glycerol
  • Purified water
  • Amonia caramel

The raw materials comply with government regulations in the EC and Scandinavia. Testing ensures that the raw materials are in accordance with their certificates of analysis.

The capsules are produced under pharmaceutical control.

The preparation has the form of a clear round soft gelatine 7mm capsule with light green olive oil.

The capsules are packed in a press out transparent plastic blister pack with an aluminium membrane approved for use with food.

All blister packs are batch numbered and the boxes are date stamped in accordance with current regulations.

Minimum 3 years.

Product to be stored at room temperature.

The rights to this product belong to:

Pharma Nord ApS, Denmark.

More information is available on request.


400IU if taken as recommended (1-5 capsules per day):

  • 120 capsules – 24 day supply (based on 5 capsules per day)

800IU and 1,000IU if taken as recommended (1-5 capsules per day):

  • 80 capsules – 16 day supply (based on 5 capsules per day)

5,000IU  if taken as recommended (1 capsule per day):

  • 40 capsules – 40 day supply

Our vitamin D is sourced from lanolin, from sheep's wool.  It is also vegetarian society approved and we can also confirm that no livestock are harmed for vitamin D's collection.

Dose and Dosage:

We recommend the following:

400IU - 1-5 capsules per day

800IU - 1-5 capsules per day

1,000IU - 1-5 capsules per day

5,000IU - 1 capsule per day

Or as directed by a physician.


Vitamin D3 is a fat-soluble form of vitamin D - when you produce this naturally, it's called cholecalciferol.

We produce vitamin D3 in our skin when exposed to adequate ultraviolet light from the sun. However, our modern lifestyles, which tend to keep us indoors, are depriving us of the sunshine we need. Unfortunately,  even the foods we eat rarely contain enough vitamin D3 - if any at all!

Vitamin D is an important daily supplement, but what is the use of vitamin D3? Calcium is the most abundant mineral in the human body, of which our bones and teeth store 99%. Vitamin D3 increases the absorption of calcium from food and reduces the excretion of calcium from the body. Since our skeleton acts as a reservoir for calcium therefore our bones become depleted if our calcium intake is insufficient.

Vitamins and minerals in all forms are excellent for maintaining and boosting our general wellbeing. But, did you know that vitamin D supplements formulated in oil are absorbed more easily by the body than those created in powder or ethanol, according to American researchers? The vitamin D3 supplement from Pharma Nord is made in oil for this very reason! 

More and more people are taking a daily vitamin D supplement - and when you consider the symptoms of a vitamin D deficiency and the benefits of vitamin D3, you can understand why. This nutrient is popular for its positive impact on human health. What's more, people may be doing themselves a favour by choosing a vitamin D3 supplement in oil, as it appears to increase the absorption of the nutrient, which may provide a better and quicker effect. 

According to American scientists who have reviewed four clinical studies of different vitamin D formulations,  supplements that use oil as a transport vehicle have better bio-availability than products that use powder or ethanol. Their research is published ahead of print in Molecular Nutrition & Food Research.

Source: Molecular Nutrition & Food Research, April 2010.

Vitamin D2 is only available from the diet. It is produced by certain fungi and plants when they are exposed to ultraviolet light. Both vitamin D2 and D3 require subsequent activation in the liver and kidneys in order to become biologically active. Science used to believe that both forms of vitamin D were equally effective in the body. However, depending on the measuring method used, vitamin D3 is 56-87 per cent more effective than vitamin D2 when it comes to raising blood levels of vitamin D. Moreover, D3 is stored in fat tissue more than three times as effectively as D2. *

* Heaney RP, et al. Vitamin D3 Is More Potent Than Vitamin D2 in Humans. J Clin Endocrinol Metab 2010.

There are several benefits of vitamin D3, however, some people should be cautious.

People with hyperparathyroidism and sarcoidosis should consult a physician before taking vitamin D3 supplements, and remember; vitamin D3 may cause kidney stones and headaches if taken in excess (10,000IU).

Relative to the food we eat, the size of individual nutrients are actually incredibly small. As a result, we need to use units other than grammes (g) to describe them. Here’s what the common units for nutrients are:

Grammes (G)- often used to describe nutritional powders. Most teaspoons of powder weigh approximately 5g.

Milligrams (Mg)- 1000mg is equal to 1g

Micrograms (Mcg or μg)- 1000μg is equal to 1mg

International Units (IU)- Slightly more complex than milligrams (mg) and micrograms (μg), International Units measure differently from nutrient to nutrient. The most common nutrients that are likely to be measured in IU are vitamins D, E and A.

  • Vitamin D: 1 IU is the equivalent of 0.025 μg of D2 or D3
  • Vitamin A: 1 IU is the equivalent of 0.3 mcg retinol
  • Beta-carotene (provitamin A): 1 IU is the equivalent of 0.6 μg of beta carotene
  • Vitamin E: 1 IU is the equivalent of 0.67 mg d-alpha-tocopherol





22 reviews for Vitamin D3 Supplements

Leave a review

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Betty - 9th January 2019:

I find your Vitamin D3 -Pearls are the only make that do not upset my stomach, they are simply the best, and I thank you.

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Tawfeeq - 25th July 2018:

I have used Vitamin D for long time, trustworthy product.

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Sharon Jane Rabin - 11th June 2018:

I have been taking Pharmanord vitamin D as a post operative supplement for a while now. it is to take and it does not upset my stomach like some supplements do.

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Anne - 24th November 2017:

Fast reliable service easy to take little pearls with accurate dose

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Ansar - 24th February 2017:

I've rated 4* because after taking 800IU D3 I would get hiccups that would last a long time. I'm pretty certain that it is by no means due to the supplement's quality but rather how my body has taken to it. I've used pharma nord products for a very long time and this is the first time it's happened to me. Due to the duration and intensity of hiccups I've decided to discontinue using the D3. However my wife continues taking it without any problem.

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Lynne Savage - 25th July 2016:

I always take a tiny pearl each morning with breakfast and increase this to two during the winter months. Recommended.

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Janice Beedham - 29th April 2016:

Have been taking Pharma Nord Vitamin D3 5000 since October 2015.Due to the lack of sunlight during the winter months, I believe taking a D3 supplement is essential and the Pharma Nord version in little capsules is the best. D3 is essential for the immune system. It's not just about protection from colds and flu but more serious illness too ! Definitely recommended.

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Karen - 1st March 2016:

I have purchased vitamins for many years but have recently, through my daughters recommendation, discovered Multivits. I have been delighted with the quick deliveries and discounts offered and feel that already, after only 9 weeks, I am starting to feel the benefit of my purchases. My consultant recommended I take vitamin D and I feel the quality from Multivits is of exceptional quality. I would certainly recommend them to friends without hesitation.

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Janet - 17th March 2014:

Blood tests 'before and after' have proved to me that Pharma-Nord's Vitamin D3 pearls improve Vitamin D3 levels. My lung function has improved since using them. I have seen an improvement in a friend's psoriasis and asthma since he has been using Vit D3 800 mcg regularly.

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Karen - 9th December 2013:

I bought vitamin D3 pearls from this company as I couldn't find them locally in the shops (the only ones in the shops were powder tablets). I was very pleased with the ingredients used in the pearls - the presentation in blister pack very good also. Have been taking them a few days - they are easy to take and easy on my stomach. Overall I am very pleased with the quality of the project and the value for money.

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Ms J Hughes - 5th December 2013:

I have to comment on my experience of your wonderful products, I am 62 ex service widow with few health conditions. Arthritis means i'm stiff as board and now I have Iritus which I take steroids for from eye hospital. I bought BIO PYCNOGENOL, BIO -FISH OIL and BIO-VIT D 5000, I FEEL FANTASTIC TO WHAT I DID BEFORE I TOOK THEM. Tina Turner again ,well I can feel the difference in myself more wide awake ,not quite as stiff, more positive mood and i'm sure this is your products, also good treatment of Bristol eye hospital. I did ask pharmacist first if it would be ok to take products with steroid drops,yes they said and BINGO feeling in pink again.

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T Pill - 4th September 2013:

Bio-Vitamin D3 is a great product, the tiny pearls are really easy to swallow and I will now increase my daily intake as we head into the autumn/winter season. Working in an office environment it is very easy to pick up coughs and colds. Since taking Bio-Vitamin D3 I rarely seem to suffer and when I do the symptoms never seem as bad.

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Elaine Scott - 4th September 2013:

This product has helped to improve the strength of my nails that have always been weak and brittle. It has also helped with maintaining a higher level of Vitamin D as in the UK sunlight is somewhat less.

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Michael Dobson - 4th September 2013:

I take the 800IU daily and class it as an essential vitamin for all year round! I usually increase to 5000IU when the clocks go back and the nights draw in! I also never get a cold which I put down to optimum vitamin D3 levels!

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G Berlandi - 3rd September 2013:

I suffer with seasonal affective disorder, and it's especially bad in the winter months; since i've been taking d3 i've been able to stop taking st john's wort and I'm keen to see how it will work once the weather really starts to turn grim.

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Hannah Wheater - 16th August 2013:

I take a Bio-vitamin D3 capsule every morning. They are small and very easy to swallow. While I try and get out in the sun as much as I can, I take Bio D3 capsules all year round to protect my bones and keep colds and flu away.

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Jason Eastham - 16th August 2013:

Taken vitamin D for one and half years, had less colds and flu. Joints do feel less pains.

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Nora Mynott - 16th August 2013:

Taken because we don't get enough sunshine.

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Iona Auchterlonie - 16th August 2013:

I take PN vitamin D3 800IU twice daily. I Know that vitamin D3 is beneficial for bone health and is particularly good helping to fight against osteoporosis as I go through the menopause. PN product is a nice small capsule, easy to swallow and a very competitive market price.

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W McMahon - 20th May 2013:

My wife and I are 60 plus, we run, walk and generally enjoy life. Since starting on the pharma nord vitamins we have not had a cold or bug all winter.

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M. Periklis - 6th June 2012:

Eventually I came across Pharma Nord's D3 and after experimenting with so many, am finally very happy with the exceptional quality and this is the one I will keep on taking.

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P Hudson, County Durham - 19th July 2011:

As a new mother I have been coming down with anything my little one catches and I have had more colds recently than ever. My local health food shop recommended Pharma Nord's Bio-Vitamin D3 as it is an anti-viral. I usually take vitamin C, but I switched to taking 4 'D-Pearls' a day while ill and my symptoms were less severe and gone within a couple of days.

I hate pills normally, but these are tiny and contain organic olive oil too. Most of the time I take 1-2 and I never miss a day out in the winter. Highly recommended!

  • CCapsule
  • HHalal

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