







☀️ Elevate your daily defense with the ultimate Vitamin D3 power-up!
Vitamin D3 4000 IU High Strength offers a potent, vegetarian-friendly daily dose in a 400-tablet bottle, delivering over a year’s supply. Backed by EFSA health claims, it supports immune health, bone strength, muscle function, and calcium absorption. Made in the UK with clean, non-GMO ingredients and GMP-certified quality, it’s the smart choice for professionals seeking reliable, long-term wellness.






| ASIN | B07XQJNLCL |
| ASIN | B07XQJNLCL |
| Age Range Description | Adult |
| Best Sellers Rank | 18,651 in Health & Personal Care ( See Top 100 in Health & Personal Care ) 213 in Vitamin D |
| Brand | Supplement Tree |
| Country of origin | United Kingdom |
| Country of origin | United Kingdom |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,059) |
| Customer reviews | 4.6 4.6 out of 5 stars (1,059) |
| Date First Available | 9 Sept. 2019 |
| Format | Tablets |
| Manufacturer | Supplement Tree |
| Product Dimensions | 4 x 4 x 8 cm; 100 g |
| Units | 400 Count |
C**S
Vitamin D
I've only just had these tablets so I think its a bit soon to fully review them, but I can say that they are easy to take and I have no side effects. I think they are excellent value for money and I am pleased with my choice of Vitamin D and I will continue to take them one per day until they are finished Thank you
A**I
Easy to take.
Excellent product. As a family we take vitamin D everyday. Very important through the dark winter months. When there is no natural vitamin D.
G**D
The maximum recommended dose in the UK
These are excellent value for very high dose Vitamin D tablets - previously I was buying tablets that were a quarter of this strength. Below I've pasted extracts from the NHS website, which makes the points that you should only really need these supplements in the dark Winter months, and that for some people the dosage of these will be too high. In fact we've tried cutting these to take half the dosage, but using an NHS-supplied pill-cutting-thingy the tablets crumble rather than split evenly, so I may go back to my old pills (purchased from Home Bargains!) THIS IS WHAT THE NHS SAY ABOUT VITAMIN D SUPPLEMENTS... Between late March/early April to the end of September, most people can make all the vitamin D they need through sunlight on their skin and from a balanced diet. Taking too many vitamin D supplements over a long period of time can cause too much calcium to build up in the body (hypercalcaemia). This can weaken the bones and damage the kidneys and the heart. If you choose to take vitamin D supplements, 10 micrograms a day will be enough for most people. Do not take more than 100 micrograms (4,000 IU) of vitamin D a day as it could be harmful. This applies to adults, including pregnant and breastfeeding women and the elderly, and children aged 11 to 17 years. Children aged 1 to 10 years should not have more than 50 micrograms (2,000 IU) a day. Infants under 12 months should not have more than 25 micrograms (1,000 IU) a day. Some people have medical conditions that mean they may not be able to safely take as much. If in doubt, you should consult your doctor.
M**E
Exceptional quality
Good quality product, very quick delivery. Will continue to use this company.
L**A
Keep bones healthy
Tiny tablet that’s easy to take and good benefits.
J**Z
VIT D
It is as it says on the label. But the tablets are tiny, so really easy to swallow.
J**T
Great item easy to swallow but can’t tell if it works for a year as I’m not a scientist
Purchased at great price at the time have enough for a year but as I’m not a scientist I can’t test the ingredients so can’t tell if these make any difference to my health will have to review in a year. I comes in a handy plastic bottle with a metal seal, they are small white tablets easy to swallow. Only problem I want to buy more and they never seem to have stock was told they were getting some soon.
J**A
Doing its job
I always buy those supplements specially during the winter they are doing their job
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