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Blue bottle of Super Strength Omega 3 Fish Oil 2000mg with EPA 660mg and DHA 440mg displayed on the label Omega 3 benefits infographic with heart, eye and brain icons beside a fish oil bottle
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Vitamin D3 4000iu

From £8.49
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Immune Support Bone Health Muscle Support Vegetarian Friendly

Vitamin D3 4000iu

From £8.49
Best Seller
Immune Support Bone Health Muscle Support Vegetarian Friendly
  • 4000iu vitamin D3 for daily support
  • Helps maintain normal bones, teeth and muscles
  • Supports normal immune function throughout the year
  • Compact micro tablets for simple daily use
  • A useful choice when sunlight exposure is limited
  • High-strength vitamin D3 in one daily tablet
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Description

A high-strength vitamin D3 supplement for daily immune, bone and muscle support. It is a straightforward option for times when sunlight is less reliable and you want vitamin D covered in one simple daily tablet.

Nutritional facts
Nutrient Amount % NRV
Vitamin D3 4000iu 2000%

*Nutrient Reference Value

Ingredients

Calcium Carbonate Preparation (Maltodextrin), Vitamin D3 Preparation (Maltodextrin, Starch, Sucrose, Cholecalciferol), Bulking Agent: Microcrystalline Cellulose, Vegetarian Coating (Hydroxypropyl Methylcellulose, Glycerin), Flow Agent: Magnesium Stearate.

For allergen information, see ingredients shown in bold.

How to take

Directions: Take 1 tablet daily with water, preferably with a meal, helping daily use settle more easily into a regular routine.

Tablet Size: J

Warnings: Do not exceed the recommended daily intake. Food supplements should not be used as a substitute for a varied, balanced diet and healthy lifestyle. If you are pregnant, breastfeeding, taking medication or under medical supervision, consult a healthcare professional before use. Keep out of reach of children.

Storage: Store in a cool, dry place.

Additional Information: For best before date and batch number, please see label.

Shipping

UK Delivery

Free Standard Delivery arrives within 2–4 working days via Royal Mail Tracked 48.
Express Delivery (£2.99) arrives within 1–2 working days via Royal Mail Tracked 24.
Orders over £90 are automatically upgraded to Free Express Delivery.

International Delivery

Standard International Shipping (£12.99) is sent via Parcelforce and typically arrives within 21 days.

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Vitamin D3 4000iu
Vitamin D3 4000iu
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Key Benefits

Sunlight isn’t enough

Vitamin D3 4000iu provides high-strength daily support when natural sunlight exposure is limited. In the UK, vitamin D levels can't be maintained from sunlight alone during autumn and winter months.

This makes vitamin D supplementation a simple and reliable way to maintain consistent intake throughout the year.

High-strength vitamin D3, made simple

This 4000iu vitamin D3 supplement delivers a potent daily dose in a convenient micro tablet, making it easy to support your routine without complexity.

Vitamin D3 (cholecalciferol) is the same form naturally produced by the body when exposed to sunlight, making it the preferred choice for effective vitamin D supplementation.

One nutrient covering several foundations

Vitamin D contributes to normal immune function and helps maintain normal bones, teeth and muscle function. That is what gives it such a steady place in everyday support, especially when one daily nutrient needs to cover more than one priority at once.

Sunlight isn’t enough

Vitamin D3 4000iu provides high-strength daily support when natural sunlight exposure is limited. In the UK, vitamin D levels can't be maintained from sunlight alone during autumn and winter months.

This makes vitamin D supplementation a simple and reliable way to maintain consistent intake throughout the year.

High-strength vitamin D3, made simple

This 4000iu vitamin D3 supplement delivers a potent daily dose in a convenient micro tablet, making it easy to support your routine without complexity.

Vitamin D3 (cholecalciferol) is the same form naturally produced by the body when exposed to sunlight, making it the preferred choice for effective vitamin D supplementation.

One nutrient covering several foundations

Vitamin D contributes to normal immune function and helps maintain normal bones, teeth and muscle function. That is what gives it such a steady place in everyday support, especially when one daily nutrient needs to cover more than one priority at once.

Ingredient insight

Why choose a high-strength 4000iu dose

A 4000iu vitamin D supplement provides a higher-strength option for those looking to maintain optimal vitamin D levels when lower doses may not feel sufficient.

It is particularly relevant during:

Autumn and winter months in the UK Periods of low sun exposure Indoor lifestyles or limited time outdoors This strength offers a more robust daily intake while remaining easy to take consistently.

Vitamin D3 4000IU Per Tablet
Vitamin D3 4000IU Per Tablet
High Strength Vitamin D3
High Strength Vitamin D3
Cholecalciferol Vitamin D3
Cholecalciferol Vitamin D3
Easy Micro-Tablet Format
Easy Micro-Tablet Format

Our opinion

“When daylight becomes less dependable, vitamin D usually stops feeling like background support and starts feeling like something worth keeping in place more deliberately. I wanted this strength to feel clear, simple and easy to stay on top of when that shift happens.”

Sarah Dinshaw - Co-Founder

Who it’s for

For when daylight is no longer enough to rely on

Vitamin D3 4000iu is ideal for adults looking for high-strength daily support, particularly those with limited sunlight exposure, indoor lifestyles, or anyone wanting to support immune, bone, and muscle health with a higher-strength option.

The NHS recommends that adults should consider taking a daily vitamin D supplement, particularly during autumn and winter months when sunlight exposure is reduced.*

People at higher risk of low vitamin D levels, including those who spend little time outdoors or cover their skin, may benefit from year-round supplementation.*

*Source: NHS England – Vitamin D guidelines

Thoughtful formulation

A stronger kind of daily vitamin D support

When comparing vitamin D supplements, the difference is often in the strength and how easy it is to keep taking each day.

A stronger kind of daily vitamin D support

Zipvit

  • 4000iu vitamin D3 per daily tablet
  • High-strength support in one tablet
  • Compact micro tablets for simple use
Comparison product

Others

  • Lower strength vitamin D is common
  • More than one tablet may be needed
  • Larger tablets can feel less easy to take
FAQs

Vitamin D3 4000iu Questions Answered

What is Vitamin D3 4000iu?

Vitamin D3 4000iu is a high-strength vitamin D supplement that provides vitamin D in the form of cholecalciferol. It helps support normal immune system function and bone health.

Why do people take high-strength vitamin D supplements?

Some people choose higher-strength vitamin D supplements to help maintain adequate levels, particularly during periods of low sunlight exposure.

What does the 4000iu dosage represent?

The 4000iu indicates the amount of vitamin D contained in each serving of the supplement.

What foods contain vitamin D naturally?

Natural dietary sources include oily fish such as salmon and mackerel, egg yolks, and fortified dairy products.

Who might consider taking Vitamin D3 4000iu?

Adults looking for a higher-strength vitamin D supplement may include it in their daily routine.

How should Vitamin D3 4000iu be taken?

The supplement is usually taken once daily with food and water.

Can vitamin D supplements be taken year round?

Many people include vitamin D supplements in their routine throughout the year, especially in regions with limited sunlight.

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