Vitamin D3 4000iu
One tablet provides 100µg (4000IU) of Vitamin D3 — 2000% of your Nutrient Reference Value. Vitamin D contributes to the normal function of the immune system, and to the maintenance of normal bones, teeth and muscle function.
- Manufactured in the UK to GMP standard
- 100µg (4000IU) per tablet, 365 tablets a bottle
- Suitable for vegetarians
Delivered every 30 days. Skip, pause or cancel any time — no fees, no minimum term.
What it's for
A high-strength 4000IU dose for the months the sun doesn't reach you. Vitamin D contributes to the normal function of the immune system, and to the maintenance of normal bones, teeth and muscle function.
Good to know
- Made to GMP standard in the UK
- 365 tablets — a full year in one bottle
- Suitable for vegetarians (not vegans)
- High strength: for use under guidance of a health professional or pharmacist
One tablet typically provides
| Vitamin D3 | 100µg (4000IU) |
| %NRV* | 2000% |
Ingredients
Bulking agents (microcrystalline cellulose, di-calcium phosphate), vitamin D prep (acacia gum, sucrose, sunflower oil, corn starch, cholecalciferol), anti-caking agents (magnesium stearate, silicon dioxide).
How to take it
Adults, take one tablet daily with food & water. Do not exceed the recommended daily dose.
Pack size
| Tablets per bottle | 365 |
| Daily dose | 1 tablet |
| Supply | Full year |
Allergy advice
For allergens, see ingredients in bold on the physical label. Manufactured in a facility that handles allergy-based materials; rigorous precautions are taken to prevent cross-contamination.
Cautions & storage
As this is a high strength product, it is recommended for use under the guidance of your health professional or pharmacist. Always consult your health practitioner if you are taking medication or are under medical supervision. Not recommended for children, pregnant or lactating women. Not a substitute for a varied, balanced diet. Store in a cool, dry and dark place, under 25 degrees, out of reach of children. Suitable for vegetarians but not vegans.
We'd rather you read the label than take our word for it.
Every figure on this page — the doses, the ingredients — is copied straight from the physical pack. If the photo's hard to read, the tables above have it in full.
“365 tablets means I don't have to think about reordering until next winter. One less thing to remember.”
Michael T. — verified buyer“High strength and the label actually explains what 4000IU means in plain English.”
Aisha R. — verified buyer“Good value for a year's supply. Wish the tablets were slightly smaller but does the job.”
Liam P. — verified buyerQuestions, answered plainly
Yes, Vitamin D3 4000IU is suitable for vegetarians. It is not suitable for vegans.
Yes — 100µg (4000IU) provides 2000% of your Reference Nutrient Intake (NRV). This is a high-strength product, best used under the guidance of your health professional or pharmacist, particularly if you're taking other vitamin D-containing supplements.
No. This high-strength product is not recommended for children, or for pregnant or lactating women. Speak to your GP or midwife about a suitable alternative.
From your account, any time — skip a delivery, pause, or cancel outright. No minimum term and no fees.
You're covered by our 30-day money-back guarantee. If it's not for you, let us know within 30 days for a full refund.