Vitamin D3 4000 IU

Go big or go home? Our Vitamin D3 4,000 IU packs 100µg into one small tablet, our strongest vitamin D yet. It’s made for adults who want a higher daily amount in one go, without doubling up or counting out tablets.

Not just for winter. British weather keeps us guessing all year, and plenty of sunny days still get spent at a desk, in the car or behind a screen. Keeping vitamin D in your routine means you’re covered whatever the forecast says.

One tablet does a lot of good: everyday immune support,* normal bones and teeth** and normal muscle function.*** Take it with breakfast and get on with your day.

*Vitamin D contributes to the normal function of the immune system.
**Vitamin D contributes to the maintenance of normal bones and teeth.
***Vitamin D contributes to the maintenance of normal muscle function.

£10.00

Delivery Information

Free shipping on orders over £50. Order before 2pm for same-day dispatch.

Ingredients & Allergens

Microcrystalline Cellulose, Cholecalciferol (Vitamin D3), Anti-Caking Agent (Magnesium Stearate, Silicon Dioxide).

Sunshine, sorted.

Vitamin D3 in one small tablet, for all the days you don’t see much of the sun.

Covered from head to toe.

Supports your immune system, bones, teeth and muscles.*

Two seconds, every day.

One tablet with breakfast and you’re done. No mixing, no measuring, no faff.

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Your questions, our answers.

The NHS advises adults and children aged 11 to 17 not to take more than 100µg (4,000 IU) of vitamin D a day, and children aged 1 to 10 no more than 50µg. Taking too much over a long period can cause calcium to build up, which can damage the kidneys and heart.

4,000 IU (100µg) is the most the NHS advises adults to take in a day. That makes it high strength rather than too strong, as long as you stick to one tablet and nothing else with vitamin D. Most adults need 10µg a day, so if you’re unsure, [Vitamin D3 1000 IU] is the everyday option.

Vitamin D doesn’t usually cause side effects when you stay within the daily limit. Taking more than 100µg a day over a long period can lead to too much calcium in the blood. Stick to one tablet a day, avoid other vitamin D products, and speak to your GP if you have any concerns.

Vitamin D3 4000 IU is made for adults and isn’t suitable for children under 11. If you’re pregnant, breastfeeding, taking medication, under medical supervision or have a medical condition, speak to a healthcare professional first. If you’re not sure you need high strength, Vitamin D3 1000 IU is the everyday option.

Some medicines can affect how your body uses vitamin D. If you take regular medication, speak to your pharmacist or GP before starting a high strength supplement. Avoid other vitamin D products too, including multivitamins and our G1 Nutrition Blend, as one tablet already reaches the 100µg daily limit.