Comparison
Best vitamin D supplement in the UK
The best vitamin D supplement for you comes down to the form (usually D3), whether it is vegan, the amount and the format you will stick with. The NHS advises adults consider a daily 10 microgram (400 IU) supplement in autumn and winter. Below we compare named UK brands across a spray and a capsule. Vitamin D contributes to the maintenance of normal bones, muscle function and the immune system.
Vitamin D for women: what the NHS says
The NHS says "everyone (including pregnant and breastfeeding women) should consider taking a daily supplement containing 10 micrograms of vitamin D during the autumn and winter". Some people are advised to take it all year, for example if they are not often outdoors or usually cover most of their skin when outside.
On the upper limit, the NHS says: "Do not take more than 100 micrograms (4,000 IU) of vitamin D a day as it could be harmful." It also says "10 micrograms a day will be enough for most people". Source: NHS, Vitamin D (last NHS review 3 August 2020, next review due 3 August 2023; checked 1 November 2026). For the detail, see how much vitamin D you need.
At a glance
| Brand and product | Source and form | Best suited to | Dose per serving | Vegan | Where we checked |
|---|---|---|---|---|---|
| BetterYou, Vitamin D1000 Oral Spray | Oral spray (D3) | Preferring a spray to a tablet | 1000 IU (25 micrograms) of vitamin D3 per spray | Not listed as vegan: BetterYou lists it as suitable for vegetarians | betteryou.com product page, now sold as Vitamin D1000 IU Oral Spray |
| Wild Nutrition, Food-Grown Vitamin D | Capsule (food-grown) | Preferring a food-grown format | 1000 IU (25 micrograms) of vitamin D3 per capsule | No: made from lanolin, says Wild Nutrition | wildnutrition.com product page |
The shortlist
We sell this in our store
Vitamin D3 2,000 IU
Her Vitals' own vitamin D3 is a 2,000 IU (50 microgram) softgel, one a day. That is five times the NHS's routine 10 microgram advice, but still within the NHS's 100 microgram daily upper limit, so it suits people with a higher need rather than being the default autumn-winter dose. See how much you actually need before choosing a strength.
Sold by us directly from our own Shopify store, disclosed here as our own product like any other. This is a direct sale by us. It does not win our roundups or calculators automatically. Check our price against any other product with the cost-per-effective-dose calculator.
New to vitamin D? Start with our plain-English guide to vitamin D for women, which explains the NHS 10 microgram advice and the D3 versus vegan sources. It matters across pregnancy, menopause and the senior years.
How we compared
We shortlist real, named UK brands in each category by desk research: product form, typical dose against NHS and EFSA reference intakes (our dose and evidence constants are dated on the research index), who each product suits, and value for money. We have not hands-on tested these products and don't claim to. No brand pays for inclusion or placement, and we don't rank by commission. Some links may earn us a commission, and that is disclosed where the link appears. Our own products are labelled wherever they appear.
Frequently asked questions
What is the best vitamin D supplement in the UK?
There's no single best: it depends on the four things in the summary at the top. The shortlist below compares named UK products on each of them.
What is the best vitamin D supplement for women?
It depends on what you need. If you are vegan, check the label says vegan: neither of the two products in our table whose labels we could check is sold as vegan. If you are pregnant or breastfeeding, the NHS advice is the same 10 micrograms a day, and your midwife can help. On dose, the NHS says "10 micrograms a day will be enough for most people", so a higher-strength product is not a better default. The table above shows the dose and vegan status we could confirm for each product.
How did you choose these?
We shortlisted real UK vitamin D brands across spray and softgel formats and D3 and vegan sources, then compared them on source, format, amount and who each suits. How we handle commission and our own products is set out in our methodology below.
How much vitamin D should I take?
For most adults, 10 micrograms (400 IU) a day in autumn and winter, and some people are advised to take it all year. Don't exceed label guidance without advice. In pregnancy, follow NHS guidance and check with your midwife.
Is a spray better than a tablet?
Neither is proven better for everyone; it is mainly about what you will use consistently. A spray suits those who dislike tablets, while softgels are a familiar option. Compare the microgram amount per dose and choose the format you will keep up.
This is information, not medical advice, and is not a substitute for a registered clinician. Always read product labels, do not exceed the stated amount without advice, and speak to your GP or pharmacist, especially in pregnancy.
Editor, Her Vitals
Oliver leads Her Vitals's editorial coverage of women's life-stage health and supplements. He curates and reviews existing branded products across trying to conceive, pregnancy, postnatal, perimenopause, menopause and the senior years, weighing what the evidence supports against guidance from bodies such as EFSA, the NHS and NICE, and is clear that the content is information rather than medical advice.
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