Vitamin D3 4000IU Tablets in Sri Lanka: Three Brands Compared
What 4000IU means
4000IU of vitamin D3 equals 100 micrograms. The nutrient reference value is 5 micrograms, so the label shows about 2,000%. Vitamin D contributes to normal absorption of calcium and phosphorus, to the maintenance of normal bones, teeth and muscle function, and to the normal function of the immune system.
For context, the UK general advice for adults is 10 micrograms (400IU) a day, and 100 micrograms a day is the safe upper limit. A 4000IU tablet sits right at that upper limit, so it is not a casual daily dose. Speak to a doctor or pharmacist before taking it long term, and do not combine it with other vitamin D products.
The three tablets
- WeightWorld Vitamin D3 4000IU: 400 easy-to-swallow 6mm tablets, a supply of more than a year at one a day. Vegetarian and gluten-free.
- Zipvit Vitamin D3 4000iu: high strength micro tablets, a 12 month supply. Vegetarian.
- VitaPremium Vitamin D 4,000 IU: 365 easy-to-swallow tablets, a full year supply. Vegetarian, made in the UK.
How to choose
With the same strength, the practical differences are pack length, tablet size and price per day. Check the pack length against the price shown on each product page.
Related guides and products
Browse the vitamin D range. Vitamin D works alongside other bone nutrients, so see our vitamin K guide, magnesium guide and joint care guide.
British Shop sources from London and ships by air cargo to Colombo. Products are available in stock or to pre-order from London, with delivery in Sri Lanka in up to 10 working days. The current price in rupees is always shown on the product page.
This guide is general information, not medical advice. Food supplements should not replace a varied diet. Do not exceed the dose on the label, and speak to a doctor or pharmacist if you are pregnant, take regular medicines or have a health condition.