Vitamin D 1000 IU
Use Vitamin D 1000 IU tablets to help keep your bones, muscles and teeth healthy.
Prices from £19.00
In stock. Simply fill in a brief questionnaire. One of our doctors will review your order and prescribe a suitable treatment. How to Order
The Vitamin D tablets we prescribe have a strength of 1000 IU and contain 25 micrograms of Vitamin D. We need roughly 10 micrograms of Vitamin D daily to be healthy. In the UK most people get enough vitamin D from sunlight in the summer. From September to March, most adults will not get enough vitamin D, as there is not as much sunlight.
With Vitamin D tablets you can keep your levels consistent, which helps to keep your bones, muscles, and teeth healthy. The usual dosage is 1 to 4 capsules a day for 10 weeks.
1000 iu - £27.00
1000 iu - £19.00
How does Vitamin D 1000 IU work?
Vitamin D controls the amount of two nutrients in your body. These nutrients are calcium and phosphate. They are needed to help your bones, muscles and teeth stay healthy. Low vitamin D levels can cause problems with bones, including rickets and conditions which cause bone pain.
Vitamin D is suitable and safe for most people. The Department of Health and Social Care recommends vitamin D for all children and adults in the UK.
Some people might not be able to take vitamin D supplements.
You should check with a doctor if:
- you are taking medication that has vitamin D in it
- you are under 18
- you have a condition that means you cannot take vitamin D in normal amounts
You should speak to your doctor before taking vitamin D if you have:
- kidney disease
- a condition called hyperparathryroidism
- an illness called sarcoidosis
For most people it is safe to take vitamin D. How much vitamin D is safe depends on your age.
- Babies under 12 months old should not be given more than 1000 IU a day.
- Children aged 1 to 10 should not take more than 2000iu a day.
- Adults and children between the age of 11 and 17 should not take more than 4000iu a day.
Taking too much vitamin D over a long time can cause too much calcium to build up in your body. This can cause damage to your bones, kidneys, or heart. Side effects from taking normal amounts of vitamin D are very rare but may still occur.
Uncommon Side effects include:
- feeling sick
- losing your appetite
- a sore stomach
- feeling weak
- feeling thirsty
- feeling sleepy
Rare side effects include:
Some medicines might affect how well vitamin D 1000 IU works. A full list can be found on the patient information leaflet. Once you have registered for an account you can also message one of our doctors for advice on how much vitamin D you should take.
Vitamin D 1000 IU tablets contain Colecalciferol, which is a type of vitamin D. They are used as a supplement for people who do not get enough vitamin D. It is advised that adults in the UK take 400iu vitamin D supplements in the winter, as there is less sunlight for you to take it naturally.
Some people are more at risk of not getting enough vitamin D. These people need to take more vitamin D or take it all year round. People with dark skin may also have low levels of vitamin D.
Vitamin D is measured in micrograms. A microgram is 1000 times smaller than a milligram. Vitamin D is also measured in ‘international units’ (IU). A microgram of vitamin D makes 40 IU. 1000 IU is equal to 25 micrograms of vitamin D.
As well as sunlight, your body can make vitamin D naturally through your diet.
Some foods can boost your Vitamin D levels, including:
- oily fish
- red meat
- egg yolks
- fortified food like some spreads and breakfast cereals
If you are vegan or vegetarian it might be hard to get enough vitamin D in the food you eat. If this is the case, consider taking a higher level of vitamin D supplement all year round.
You should take vitamin D 1000 IU once a day, with a drink of water. If possible, try to take vitamin D with your main meal each day. This helps you to remember to take it and it is taken in by your body better this way. If you miss a tablet, take it as soon as you remember. If you are due to take your next tablet, do not take the missed one.
Dr Kathryn Basford
Dr Kathryn Basford is a qualified GP who works as a GP in London, as well as with ZAVA. She graduated from the University of Manchester and completed her GP training through Whipps Cross Hospital in London.Meet our doctors
Article created: 20 Sep 2021
Last reviewed: 20 Sep 2021
Colecalciferol 1000 IU capsules patient information leaflet (2019) EMC [accessed 26 August 2021]
Hyperparathyroidism (2021) NHS online [accessed 25 August 2021]
9 things that can undermine your vitamin D level (2018) Harvard Health Publishing [accessed 26 August 2021]
Sarcoidosis (2018) NHS online [accessed 26 August 2021]
Vitamin D (2020) NHS online [accessed 26 August 2021]