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Pharma Nord Bio-Vitamin D3 1000 IU D- Pearls 90 Capsules

Pharma Nord Bio-Vitamin D3 1000 IU D- Pearls 90 Capsules

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  • ✔️ Provides 1000 IU vitamin D3 per capsule daily
  • ✔️ Supports bone strength, immunity, and muscle function
  • ✔️ Oil-filled D-Pearl capsule for enhanced fat-soluble absorption
  • ✔️ 90 capsules — a full three-month supply per pack
  • ✔️ Suitable for adults and children over 12 years

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What Is Vitamin D3 1000 IU and Why Does It Matter?

 

If you live in the UK, there is a good chance you are not getting enough vitamin D — especially between October and March. The NHS advises that everyone should consider taking a daily vitamin D supplement during autumn and winter, and that some groups need it all year round. Vitamin D3 1000 IU in the form of Pharma Nord Bio-Vitamin D3 D-Pearls offers a convenient, once-daily soft capsule to help you maintain healthy levels without any fuss. Each pack contains 90 capsules, giving you a three-month supply at just £9.99.

Vitamin D is not just about bones. It plays a role in supporting your immune system, maintaining normal muscle function, and regulating calcium and phosphate levels in the body. Many people are surprised to learn that deficiency is extremely common in the UK — particularly in older adults, people with darker skin, and those who spend most of their time indoors. If you are looking to support your overall health with a well-established supplement, you can explore the full range of vitamins and supplements available at Cured Pharmacy.

 

How Does Pharma Nord Bio-Vitamin D3 Work in the Body?

 

Vitamin D3, also known as cholecalciferol, is the same form of vitamin D your skin produces when exposed to sunlight. Once you swallow a capsule, the cholecalciferol is absorbed through the gut and transported to the liver, where it is converted to calcidiol. The kidneys then convert calcidiol into calcitriol — the biologically active form that your body actually uses.

  • Calcitriol increases calcium and phosphate absorption from the gut
  • It supports bone mineralisation, reducing the risk of softening of the bones (osteomalacia)
  • It modulates immune cell activity, helping your body respond to infection
  • It contributes to normal muscle function, which is particularly important in older adults

The D-Pearls format uses a small, soft gelatin capsule containing the vitamin D3 dissolved in a carrier oil. This oil-based delivery helps absorption, since vitamin D is fat-soluble and requires dietary fat to be taken up effectively from the digestive tract.

 

Who Should Consider Taking Pharma Nord Bio-Vitamin D3 1000 IU?

 

The NHS identifies several groups who are particularly at risk of vitamin D deficiency and who may benefit from daily supplementation. This product is suitable for adults and children over 12 years of age. It is especially relevant if you fall into one or more of the following categories:

  • People who spend little time outdoors or who cover most of their skin
  • Those with darker skin tones, as more melanin reduces the skin's ability to synthesise vitamin D from sunlight
  • Adults over 65, who have reduced skin synthesis capacity
  • People who are housebound or living in care homes

Pregnant and breastfeeding women should speak to their GP or midwife before starting any new supplement. If you have a condition affecting calcium metabolism — such as sarcoidosis or hyperparathyroidism — you must consult your doctor before use.

 

How Does Pharma Nord Bio-Vitamin D3 Compare to Other Vitamin D Supplements?

 

Feature Pharma Nord Bio-Vitamin D3 1000 IU D-Pearls Typical High-Street Vitamin D Tablet
Form Soft oil-filled capsule (D-Pearl) Compressed tablet or hard capsule
Active ingredient Cholecalciferol (D3) Cholecalciferol (D3) or ergocalciferol (D2)
Dose per capsule 1000 IU (25 mcg) Varies — commonly 400 IU to 1000 IU
Pack size 90 capsules (3-month supply) Typically 30–60 tablets

 

Is Pharma Nord Bio-Vitamin D3 Suitable for Vegetarians or Vegans?

 

The D-Pearls capsule shell is made from gelatin, which is derived from animal sources. This means the product is not suitable for vegans or vegetarians. If you follow a plant-based diet and are looking for a vegan-friendly alternative, speak to your pharmacist about suitable options. It is also worth noting that this product should be stored correctly to maintain its quality — keep it below 25°C, away from direct sunlight and moisture.

This product is a food supplement. Speak to your doctor or pharmacist before using if you have an underlying medical condition or are taking other medicines.

Pharma Nord Bio-Vitamin D3 1000 IU D-Pearls 90 Capsules specifications
Treatment category Vitamin D deficiency prevention; bone, muscle, and immune support
Mechanism of action Cholecalciferol is converted to calcitriol, which regulates calcium and phosphate absorption
Effective for Maintaining adequate vitamin D levels; supporting bone mineralisation and immune function
Suitable for Adults and children over 12 years; not suitable for vegans or vegetarians
Active ingredient Cholecalciferol (Vitamin D3) 1000 IU (25 mcg) per capsule
Pack size 90 capsules
Strength 1000 IU (25 mcg) per capsule
UK classification Food supplement (not a licensed medicine)
Drug class Fat-soluble vitamin
Preparation Soft gelatin capsule (D-Pearl) with oil carrier
Route of administration Oral

Specifications of Pharma Nord Bio-Vitamin D3 1000 IU D-Pearls 90 Capsules

 

What Is Pharma Nord Bio-Vitamin D3 and What Is It Used For?

 

Pharma Nord Bio-Vitamin D3 1000 IU D-Pearls is an oral food supplement containing cholecalciferol — the natural form of vitamin D that your skin produces in response to sunlight. Each small, soft capsule delivers 1000 IU (25 micrograms) of vitamin D3 dissolved in a carrier oil to support absorption. It is used to help maintain adequate vitamin D levels in the body, particularly during the autumn and winter months when sunlight in the UK is insufficient for the skin to produce meaningful amounts.

Vitamin D contributes to the normal absorption of calcium and phosphorus, the maintenance of normal bones and teeth, normal muscle function, and the normal functioning of the immune system. The NHS recommends that adults and children over four take a daily supplement containing 10 micrograms (400 IU) of vitamin D throughout the year if they are at risk of deficiency. This product, at 1000 IU, provides a slightly higher daily intake that remains within safe limits for most adults.

 

What Do You Need to Know Before Using Pharma Nord Bio-Vitamin D3?

 

Before starting this supplement, it is important to be aware of certain conditions and medicines that may affect whether it is appropriate for you. Do not take this product if any of the following apply:

  • You have hypercalcaemia (high calcium levels in the blood)
  • You have hypercalciuria (high calcium levels in the urine)
  • You have sarcoidosis, a condition that can increase vitamin D sensitivity
  • You have kidney stones or severe kidney disease
  • You are allergic to any of the ingredients, including the gelatin capsule shell
  • You are already taking high-dose vitamin D supplements prescribed by your doctor

The following medicines may interact with vitamin D3 supplements. Always inform your pharmacist or GP if you are taking any of these:

  • Thiazide diuretics (e.g. bendroflumethiazide) — may increase the risk of hypercalcaemia
  • Digoxin — hypercalcaemia caused by excess vitamin D can increase the risk of digoxin toxicity
  • Certain anticonvulsants (e.g. phenytoin, carbamazepine) — may reduce vitamin D effectiveness
  • Orlistat (weight loss medicine) — may reduce absorption of fat-soluble vitamins including vitamin D
  • Cholestyramine — may reduce absorption of vitamin D from the gut

 

How Should You Use Pharma Nord Bio-Vitamin D3 Correctly?

 

Using this supplement correctly will help you get the most benefit. Follow these steps each day:

  1. Take one soft capsule daily — do not exceed this unless advised by your doctor
  2. Swallow the capsule whole with a glass of water
  3. Take it with a meal that contains some fat (e.g. lunch or dinner) to support absorption
  4. Try to take it at the same time each day to build a consistent habit
  5. If you miss a dose, take it later that day — do not double up the following day
Indication Age Group Dose Frequency
Vitamin D deficiency prevention Adults and children over 12 1 capsule (1000 IU / 25 mcg) Once daily
General supplementation (NHS guidance) Adults and children over 4 400 IU (10 mcg) minimum Once daily

If your GP has diagnosed vitamin D deficiency and prescribed a higher therapeutic dose, follow their instructions rather than the standard supplement guidance above. You can also browse our wider range of vitamins and supplements if you are looking to support other aspects of your health alongside vitamin D.

 

What Are the Possible Side Effects of Pharma Nord Bio-Vitamin D3?

 

At the recommended dose of one capsule (1000 IU) per day, side effects are uncommon. Vitamin D3 is generally well tolerated. However, taking too much vitamin D over a prolonged period can cause calcium to build up in the body — a condition called hypercalcaemia.

Common side effects (may affect a small number of people at higher doses):

  • Nausea or stomach discomfort
  • Constipation
  • Headache

Less common side effects (typically associated with excessive intake):

  • Excessive thirst and frequent urination
  • Fatigue and weakness
  • Loss of appetite
  • Confusion or disorientation
  • Kidney problems in severe cases of hypercalcaemia

If you experience any of these symptoms, stop taking the supplement and seek medical advice promptly. If you are managing other health conditions alongside supplementation — for example, if you are monitoring blood glucose levels — it may be worth speaking to your pharmacist. You can find relevant monitoring tools in our electrical health and diagnostic range.

 

How Should You Store Pharma Nord Bio-Vitamin D3 Safely?

 

Correct storage helps maintain the quality and effectiveness of the capsules throughout the 90-day supply. Follow these storage guidelines:

  • Store below 25°C in a cool, dry place
  • Keep away from direct sunlight and sources of heat
  • Keep the container tightly closed after each use
  • Keep out of the sight and reach of children
  • Do not use after the expiry date printed on the packaging
  • Do not store in the bathroom or near a sink — humidity can degrade the capsules

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Your safety and success are our highest priorities. Our medical team rigorously evaluates every product and piece of advice we provide, ensuring you receive only the most effective, science-backed solutions available.

Frequently Asked Questions

Where can I buy Pharma Nord Bio-Vitamin D3 1000 IU online in the UK?

You can buy Pharma Nord Bio-Vitamin D3 1000 IU D-Pearls 90 Capsules directly from Cured Pharmacy, a GPhC-registered UK online pharmacy, for just £9.99. No prescription is needed as this is an over-the-counter food supplement. Simply add it to your basket and it will be dispatched to your door.

How does vitamin D3 1000 IU work in the body?

Cholecalciferol (vitamin D3) is absorbed from the gut and converted in the liver to calcidiol, then in the kidneys to calcitriol — the active form. Calcitriol regulates calcium and phosphate absorption, supports bone mineralisation, and helps modulate immune cell activity. This is why adequate vitamin D levels matter for far more than just bone health.

How do I take Pharma Nord Bio-Vitamin D3 D-Pearls step by step?

Take one soft capsule daily with a meal that contains some fat — vitamin D3 is fat-soluble, so dietary fat significantly improves its absorption. Swallow the capsule whole with a glass of water and try to take it at the same time each day. Do not chew or crush the capsule.

What is the best time of day to take vitamin D3 1000 IU?

There is no single "correct" time, but taking vitamin D3 with your largest meal of the day — typically lunch or dinner — tends to maximise absorption because of the fat content in the meal. Some people prefer mornings with breakfast; what matters most is consistency. Pick a time that fits your routine and stick to it.

Who is eligible to take Pharma Nord Bio-Vitamin D3 1000 IU?

This supplement is suitable for adults and children over 12 years of age who want to maintain healthy vitamin D levels. It is particularly relevant for people with limited sun exposure, older adults, those with darker skin tones, and people who are housebound. Pregnant or breastfeeding women and anyone with a medical condition affecting calcium metabolism should consult their GP first.

What are the side effects of taking vitamin D3 1000 IU daily?

At 1000 IU per day, side effects are uncommon for most healthy adults. The main risk comes from taking too much vitamin D over a long period, which can cause hypercalcaemia — symptoms include nausea, excessive thirst, frequent urination, and fatigue. If you notice any of these, stop taking the supplement and speak to your GP or pharmacist.

What happens if I miss a dose of Pharma Nord Bio-Vitamin D3?

If you forget to take your capsule, simply take it later the same day when you remember. Do not take two capsules the following day to make up for the missed dose. Missing the occasional dose will not significantly affect your vitamin D levels, as the body stores this fat-soluble vitamin in fatty tissue.

How long should I take Pharma Nord Bio-Vitamin D3 for?

The NHS recommends taking a vitamin D supplement throughout autumn and winter (October to March) at minimum, and year-round if you have limited sun exposure or are in a high-risk group. Long-term daily use at 1000 IU is generally considered safe for most adults. If you are unsure how long to continue, speak to your pharmacist or GP.

Is Pharma Nord Bio-Vitamin D3 suitable for vegans?

No — the D-Pearls capsule shell is made from gelatin, which is derived from animal sources, making this product unsuitable for vegans and vegetarians. If you follow a plant-based diet, look for a vegan vitamin D3 supplement derived from lichen. You can browse our vitamins and supplements collection for alternative options.

Can I take Pharma Nord Bio-Vitamin D3 alongside other medicines?

Vitamin D3 can interact with certain medicines, including thiazide diuretics, digoxin, some anticonvulsants, and orlistat. These interactions can affect either the absorption of vitamin D or the risk of side effects. Always tell your pharmacist or GP about all supplements and medicines you are taking before starting this product.

What are the alternatives to Pharma Nord Bio-Vitamin D3 1000 IU?

Alternatives include other vitamin D3 supplements at 400 IU (the standard NHS-recommended dose), higher-strength 2000 IU or 3000 IU options for those with confirmed deficiency, or combination supplements containing both vitamin D3 and vitamin K2. The right choice depends on your individual needs — a pharmacist can help you decide. You can explore options in our vitamins and supplements range.

Can I take vitamin D3 1000 IU if I am pregnant?

The NHS recommends that pregnant women take 10 micrograms (400 IU) of vitamin D daily throughout pregnancy. A dose of 1000 IU is above this standard recommendation, so you should speak to your midwife or GP before taking this product during pregnancy. They can advise on the most appropriate dose for your individual circumstances.

Does vitamin D3 help with immune system support?

Yes — vitamin D plays a recognised role in supporting normal immune system function. It helps regulate the activity of immune cells and is involved in the body's response to infection. While it is not a treatment for any specific illness, maintaining adequate vitamin D levels is considered an important part of general immune health, particularly during winter months in the UK.

What does the latest research say about vitamin D3 supplements?

Research continues to explore the role of vitamin D beyond bone health, including its potential links to immune function, mood, and cardiovascular health. The NHS and NICE currently recommend supplementation primarily for bone health and deficiency prevention. Evidence for other benefits is still emerging, and supplementation at 1000 IU daily remains within established safe limits for most adults.

How do I know if I am vitamin D deficient?

Symptoms of vitamin D deficiency can include fatigue, bone pain, muscle weakness, and low mood — but many people have no obvious symptoms at all. The only reliable way to confirm deficiency is through a blood test measuring serum 25-hydroxyvitamin D levels, which your GP can arrange. If you are in a high-risk group, the NHS recommends supplementing regardless of whether you have symptoms. You can also find relevant health monitoring tools in our electrical health and diagnostic collection.

How Should You Use Pharma Nord Bio-Vitamin D3 1000 IU D-Pearls?

Using this supplement correctly is straightforward, but a few simple steps will help you get the most from each capsule. Because vitamin D3 is fat-soluble, it is absorbed most effectively when taken alongside food that contains some fat — so always take your capsule with a meal rather than on an empty stomach.

Follow these steps each day:

What Is the Correct Dose of Pharma Nord Bio-Vitamin D3 1000 IU?

The standard dose for this product is one capsule per day, providing 1000 IU (25 micrograms) of cholecalciferol. This is above the NHS minimum recommendation of 400 IU (10 mcg) for general supplementation, but remains within safe limits for most healthy adults. Do not take more than one capsule daily unless specifically directed by your GP.

When Is the Best Time to Use Pharma Nord Bio-Vitamin D3 1000 IU?

There is no strict rule about timing, but taking your capsule with your largest meal of the day — typically lunch or dinner — is a practical approach that supports absorption. Some people prefer to take it with breakfast if that fits their routine better. The key is consistency: taking it at the same time every day helps you remember and ensures a steady daily intake.

In the UK, the NHS advises supplementing throughout autumn and winter (October to March) as a minimum, since sunlight levels are too low for the skin to produce adequate vitamin D. If you are in a high-risk group — such as being housebound or having darker skin — year-round supplementation is recommended.

How Long Can You Use Pharma Nord Bio-Vitamin D3 1000 IU For?

This supplement can be used long-term for most healthy adults. The NHS supports year-round supplementation for those at risk of deficiency, and 1000 IU daily is within the safe upper intake range for adults. Each pack of 90 capsules provides a three-month supply at one capsule per day.

If you have been prescribed a higher therapeutic dose by your GP to treat confirmed deficiency, follow their guidance on duration. Once your levels are restored, they may advise switching to a maintenance dose. Regular blood tests can help monitor your vitamin D status over time.

Do not exceed the recommended dose. If in doubt, speak to your pharmacist.

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What Are the Most Common Side Effects of Pharma Nord Bio-Vitamin D3 1000 IU?

At the recommended dose of one capsule (1000 IU) per day, most people tolerate this supplement very well and experience no side effects at all. Side effects are more likely to occur if the supplement is taken in doses significantly higher than recommended over a prolonged period.

Common side effects that may occur, particularly with higher intakes, include:

  • Nausea or stomach discomfort
  • Constipation
  • Headache
  • Loss of appetite

What Are the Less Common Side Effects of Pharma Nord Bio-Vitamin D3 1000 IU?

Less common side effects are generally associated with excessive vitamin D intake leading to hypercalcaemia — a build-up of calcium in the blood. This is unlikely at 1000 IU daily but becomes a risk if multiple vitamin D-containing products are taken simultaneously without medical supervision.

  • Excessive thirst and dry mouth
  • Frequent urination
  • Fatigue and general weakness
  • Muscle pain or weakness
  • Confusion or difficulty concentrating
  • Metallic taste in the mouth

What Are the Serious Side Effects of Pharma Nord Bio-Vitamin D3 1000 IU?

Serious side effects are rare at the recommended dose but can occur with prolonged excessive intake. Severe hypercalcaemia — very high calcium levels in the blood — can cause kidney damage, abnormal heart rhythms, and calcification of soft tissues. These effects are associated with very high doses taken over extended periods, not with standard supplementation at 1000 IU daily.

If you experience severe symptoms such as chest pain, irregular heartbeat, significant confusion, or signs of kidney problems (such as very reduced urine output), stop taking the supplement immediately and seek urgent medical attention.

What Should You Do If You Experience Side Effects of Pharma Nord Bio-Vitamin D3?

If you notice mild symptoms such as nausea or headache, try taking the capsule with a larger meal to reduce stomach discomfort. If symptoms persist or worsen, stop taking the supplement and speak to your pharmacist or GP. Do not take additional doses to compensate for missed ones, as this increases the risk of side effects.

You should also report any suspected side effects from food supplements to the MHRA's Yellow Card scheme, which helps monitor the safety of products available in the UK.

Can Pharma Nord Bio-Vitamin D3 Interact With Other Medicines?

Yes — vitamin D3 supplements can interact with certain medicines. The most clinically significant interactions include:

  • Thiazide diuretics (e.g. bendroflumethiazide): combined use may increase the risk of hypercalcaemia
  • Digoxin: hypercalcaemia caused by excess vitamin D can increase the risk of digoxin toxicity, including heart rhythm disturbances
  • Anticonvulsants (e.g. phenytoin, carbamazepine): these medicines can accelerate the breakdown of vitamin D, reducing its effectiveness
  • Orlistat: this weight loss medicine reduces fat absorption and may therefore reduce absorption of fat-soluble vitamins including vitamin D3
  • Cholestyramine: may reduce the absorption of vitamin D from the gut

Always inform your pharmacist or GP about all medicines, supplements, and herbal products you are taking before starting this supplement.

If you are concerned about any side effects, contact your pharmacist or GP immediately.

Patient Information Leaflet

Important - Before taking any medication, it is always important to read the Patient Information Leaflet (PIL)

Written and reviewed by our qualified team

GPhC Number: 2233073
Tarun Kumar

Reviewed by:

Tarun Kumar

Superintendent/ Clinical Lead

📖 Find out more about our team of medical content authors and how we ensure the accuracy of our content with our content guidelines.

Content last updated: 31 Mar 2025

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