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Vitamin D3 4000IU 365 Vegetarian Tablets – High Strength Vit D Cholecalciferol

(86 customer reviews)


Our high potency Vitamin D3 (Cholecalciferol) 4,000iu provides naturally derived vitamin D3 supplement in vegetarian easy to swallow tablets. Because natural food sources of Vitamin d are rare, the most effective way of receving adequate levels are through sunlight exposure and supplements. Our vegetarian tablets are especially formulated for fast-absorption into the body and will provide you with the much needed Vitamin D3 even without the sun.

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Vitamin D is a group of fat-soluble vitamins that play a crucial role in the regulation of calcium and phosphorus absorption, bone health, and immune system function. Vitamin D3, also known as cholecalciferol, is a type of vitamin D that is synthesised by the skin when exposed to sunlight. It is the most active and most commonly used form of vitamin D in supplements.

Vitamin supplementation may be important to fill nutritional gaps and prevent deficiencies that may lead to health problems. While a balanced diet is the best way to obtain vitamins, certain factors can make it difficult to get enough. Vitamin D supplements can provide a convenient and effective way to ensure adequate vitamin D intake and support overall health and well-being.

Why Supplement Tree Vitamin D3 4000 IU Tablets?

✔ VITAMIN D3 4000 IU – Our high potency Vitamin D3 (Cholecalciferol) 4,000iu provides naturally derived vitamin D3 supplement in vegetarian easy to swallow tablets. Because natural food sources of Vitamin d are rare, the most effective way of receiving adequate levels is through sunlight exposure and supplements. Our vegetarian tablets are specially formulated for fast-absorption into the body and will provide you with the much-needed Vitamin D3 even without the sun.

✔ FULL YEAR’S SUPPLY – Take just one 4,000 IU Vitamin D3 tablet per day. Each bottle includes 365 tablets, giving you a full year’s supply so you won’t need to re-order again for at least a year.

✔ MADE IN THE UK – Supplement Tree Vitamin D3  4,000IU Capsules are made right here in the UK to GMP code of practice, giving you total assurance that the supplements are produced to the highest possible hygiene and manufacturing standards. Only the finest quality raw materials in their highest and purest form are used. Our Vitamin D3 vegetarian tablets contain no artificial colours or flavours, GMO-free, and free from allergens such as Gluten, Wheat, Lactose, Nuts, and Nut Traces.


Key Features & Benefits: 

High strength vitamin D3 Cholecalciferol supplement.

Naturally sourced.

Suitable for vegetarians.

Helps maintenance of normal bone and teeth

Supports normal absorption and utilisation of calcium and phosphorus and the maintenance of normal blood calcium concentrations

Supports normal cell division

Supports normal function of the immune system and healthy inflammatory response

Supports the maintenance of normal muscle function


Adults, take 1 tablet daily (or as directed by your healthcare professional) with food & water. Do not exceed the recommended daily dose.

Product Info per Tablet:

Vitamin D3 4,000iu (2000% NRV*)

*NRV = Nutrient Reference Value


Bulking Agent (Microcrystalline Cellulose), Vitamin D3 (Cholecalciferol), Anti-Caking Agents (Magnesium Stearate, Silicon Dioxide).

Free from GMO (Genetically modified Organisms).


Always consult your health practitioner before taking nutritional supplements, especially if you are taking medication or are under medical supervision.

Not intended to use by persons under the age of 18.

Not recommended for use by pregnant or breastfeeding women.

You should not take supplements as a substitute for a varied balanced diet or healthy lifestyle.

Store in a cool dry place, out of reach of children.

86 reviews for Vitamin D3 4000IU 365 Vegetarian Tablets – High Strength Vit D Cholecalciferol

  1. J. M. Jacquet

    Good quality VitaminD3 5*

    Fantastic price for such good quality VitaminD3. Letterbox friendly box. Easy to swallow. 5* I’ve had no bad reaction to these. Very happy. Thank you

    9 people found this helpful
  2. Pauline Millsip

    Excellent value and super quick delivery

    I’ve been taken vitamin D3 for some years now and these are excellent value. They arrived a lot quicker than I expected.exc

    4 people found this helpful
  3. MV Varsani



  4. D G Beasley

    A years supply of 4000 mu tabs

    Not bad. A bit of a large tablet but I could still swallow them. Would have liked 5000 mu. Arrived as expected. I take these because my neurosurgeon advised vit D as a precaution with suspected ms.

    6 people found this helpful
  5. Chris Jenkins


    Arrived on time in a easy shape bottle for posting and storage

  6. shugism

    Great price, weird bottle

    Bought these after reading up on Covid-19 and Vitamin D. Happy with the product. The bottle they come in is really odd though, shaped like a pack of cigars with a lid that comes off revealing a 7cm x 1cm opening which is practically impossible to just get one pill out of. I think my record was more than twenty.Given that it’s best not to touch pills until you are going to take them, this is a very strange design flaw.

    One person found this helpful
  7. Amazon Customer

    Good quality, good bottle

    Seem like good quality vitamins, tablet size is the same as other brands I’ve used. Bottle is nice and slim, so easy to store and good for delivery through the letter box. Would by again

  8. Dawn


    Easy to swallow

  9. gordon

    value !

    Good product and prompt delivery.

  10. Karen Hepple

    Great stuff

    Will order again

  11. T. E. Foster

    As below

    Arrived quickly easy to take, good price. It will take some time before I know whether they work.

  12. Amazon Customer

    Good product

    Good product

  13. Lorna Clayton

    Reasonable price

    I have only recently started taking these because vitamin D3 is recommended to help prevent people from catching COVID-19. They are a reasonable price and, as they are in a small flat container, the package goes through the letterbox.

  14. shee

    Great service

    Can’t tell results yet,but so far I’m happy with them

  15. Maza

    Good product, excellent value for money

    Product is exactly as expected

  16. ugly dog

    small white pills

    Well, i’ve started taking them for winter blues, and i think they may be starting to work. Oh, and they’re packed in a compact box,so they fit easily through the letterbox. Happy with them.

    3 people found this helpful
  17. Amazon Customer

    Good value

    These tablets are small and easy to swallow. They come in a handy slimline container which fits through a letterbox. Good value for a year’s supply.

  18. Canada Bob

    Keep Covid at Bay !!!

    A pill a day helps keep Covid away !!!

  19. Marie

    Good value.

    Very good value for money, arrived quickly. Great shaped little box. Too soon to say how well they work. My daughter has regular blood tests as she is vitamin D defient. So I shall be able to see any positive results in bloods and symptoms and will update my review if I have anything further to add.

    4 people found this helpful
  20. Carole Jones

    Well worth it

    Promptly arrived,minimal packaging. Great value product

  21. azra


    I like the strength is good and for whole year one a day easy to remember.

  22. Transporter

    Big power in a small pill.

    I love those small tables with proper D3 power.

  23. Mohammed Aref Kyyaly



  24. insaneheretic

    An essential supplement

    Very good value for money. Tablets quite large but easily swallowed with food. Very good customer service for an issue rapidly resolved.Vitamin D is an essential supplement I would rank at probably the one to take I over all others. One tablet is the equivalent of an afternoon in the sun hence purchasing this brand.Very happy.

  25. cw

    Good value

    Seems to do the job not much more I can say delivered on time well packaged good value

  26. ruby2sday

    This brand was recommended to me by a GP friend

    Good value

  27. squeeze box

    Easy to swallow

    Really easy to take. I find most vitamin supplements huge and hard to swallow. These are perfect and I haven’t missed a day so far

  28. Mr T Armin

    They are vitamin pills

    Just hope they are effective

  29. Adam Hartung



  30. MR JOHN D

    High dosage tablet

    Wanted a high dosage tablet which I couldn’t find in shops. Good price and prompt delivery.

  31. Betania Serrano Zaba



  32. Ana Luengo

    Excellent product!

    Excellent presentation, good size, fast shipping. I take Vit D to strengthen my body.

  33. s mcroberts

    Would recommend

    Seller was great and really quick. Product just what I neededm taking because I have read a study that suggests vit d deficiency can mean worse covid 19 symptoms

  34. Hugh Sheerin


    Quick delivery, no fuss and exactly what I ordered and needed. Thank you. I would buy again 🙂

  35. David

    Help your system to resist covid 19.

    Too soon to give a answer to its efficacy, but in our winter no natural sunlight will give us vitamin D. I feel it should be more recognised as a help in this covid 19 pandemic.

  36. Kim

    Delivered quickly

    Ordered twice for all the family and wanted suitable for vegetarians

  37. Nafees Akhtar

    Great product.

    Does what it says on the box! Vitamin D3 4000IU. I take 1 ever other day and small tablet so very easy to swallow. Happy customer and will buy again.

  38. Customer



  39. JANET

    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.

    One person found this helpful
  40. Ellu38

    Sunshine in a tub

    Well packaged in a slim line plastic pot. A year’s supply with a 2.5 year BBE date

  41. dawn jones

    Easy to swallow

    Easy to swallow. Just another pill to take but it may help.

  42. Mummy and Rosie

    Very good quality and price.

    I’m very pleased with the quality, and prices. Very good value for money.

  43. Karen Bethell

    Great super strength small tablet.

    Excellent. Arrived quick and will order again. I need super strength for my MS.

  44. Love Blossoms


    Does what it’s meant to

  45. Kat

    Small pills

    Erm… vitamin pills so hard to review

  46. Amazon Customer

    Carton too easy to open, seal insecure.

    Hard to tell on how effective they are but I‘m hopeful. The plastic carton they came in didn’t seem to be very well sealed considering they were to be taken internally, the foil seal didn’t seem to be very securely attached to the actual body of the carton.

    One person found this helpful
  47. Jenny B

    Exactly as described

    Space saving bottle. One a day for general wellness.



    arrived quickly, greatb price

    One person found this helpful
  49. Amazon Customer


    decent exactly what they say on the product

  50. wiggy

    good value

    Good price easy to swallow quick delivery

  51. T-Rex

    Cheaper than going on holiday to get some sun

    Cheaper than the high street. Appear to be the same quality, but you just don’t know with these things. No side effects. You have to take these for a while before you start seeing any benefits.Comes in a flat bottle that fits through the letter box.

  52. Helen F

    Quality product

    Tablet easy to swallow. Well designed container. Great value. Will buy again.

  53. john


    Convenient shaped dispenser.

  54. Melanie


    Great no problems

  55. Amazon Customer

    Very good product

    Easy to use, small package perfect to storage.

  56. Steven mcmillan

    Highly recommended

    Top quality product from a premium supplier

  57. Haroon Bhatti

    Good product

    It’s worth it and suitable to veg which is good, little but expensive as comapre to high street price

  58. Richo

    Keep the winter blues at bay

    Good product at a good price.

  59. haji yunis


    Good product

  60. djg

    Love these

    The highest strength OTC I could find – we Brits should always take Vitamin D in the winter months as we cannot get enough from the sun (even if you work outside). These are perfect.

    2 people found this helpful
  61. gaynor evans


    Take 1 every day, easy to swallow. Feel lots better taking one

  62. Peter Barrett

    Good value product

    Advised medically to take during coronavirus outbreak – good value, easy to take.

  63. Buyer

    Good value

    Good value, fits through letterbox

  64. W

    Excellent service

    Item as advertised

  65. Kindle Customer

    Is what it is!

    Love the letterbox friendly packaging.

  66. Miss k mulligan

    Good for money

    Yes really good really happy with them

  67. John K.

    Best quality & purity. Excellent strength.

    Getting on in years and not getting enough sunshine, this stuff hits the mark bang on target. Thanks. Great value & arrived early too.

  68. hollie m.


    Small sized pill so easy to swallow, hopeful it will benefit me. Packaging is good too

  69. Why do I need this?


    Good value, well packaged, no complaints. Will order again

  70. Mr S Jones


    Max daily dose in 1 small tablet. 1 a day full year supply excellent value for money

  71. Kieron

    Very good value

    These have way more D3 in than many other supplements, and there’s a whole year’s supply! I didn’t select a rating for “absorbency” because there’s no way for me to know that.D3 is pretty important in the UK, especially if you have dark skin, or live further north in the country. Also has been important during the lockdown with not being able to go outside as much.

    One person found this helpful
  72. lynn

    Good product and at a reasonable price and delivered quickly.

    Priced very reasonably seem to be keeping my D levels up in my blood just had a test and came back normal.

  73. Sue

    Goes through the letter box….very clever packaging.

    Years supply of important vitamin…. dry pleased.

  74. Ewan Hopes

    Great product

    Quick delivery, product as expected and very easy to swallow. Thankyou

  75. magoo111

    Sunlight in a tablet

    These tablets are easy to swallow and are a high enough dose to actually do what you want it to do.

  76. Mr. P. T. Gaskell

    Very good.

    Nothing to dislike ,perfect condition arrived promptly.

  77. mrs.sandhu

    Trusting Amazon recommendation

    Good amount provided and good value

  78. Kindle Customer

    good value

    I love the flat containers that are easy to use and an easy fit for the postman to put through the letterbox. Its difficult to say how effective the vitamin is as I just started to use them. I purchased them to give my body a vitamin d boost because of the lack of sunshine in Scotland. I like that tablets are suitable for vegans.i would say they are good value, delivery was quick and i will definitely reorder when required.

  79. Aphragirl

    Yes good product

    Happy to recommend this product. Container very practically shaped for easy storage. Tablets easy to consume.

  80. Libyan Soup

    Purchased following the advice of Joe Rogan and Dr Rhonda Patrick.

    Easy to swallow with no unpleasant taste or texture. I decided to start taking this Vitamin D supplement because I live at high latitude in a cold country and simply do not get enough sun on my skin year round to naturally produce sufficient Vitamin D to keep me healthy. I took the advice from a health nutritionist and purchased this product as a supplement to compensate for my lifestyle and location. Glad I did.

  81. nicki

    it seems to work

    was recommended to use vitamin D by my nurse – it helps build a good immune system -in the winter I use 4000U and in summer – when hopefully we get more sunshine, my dose is 2000U. A very good price and prompt delivery

  82. beefyboy1

    vitamin d tablets

    an excellent buy good value for money will buy again

  83. Robert Theobald

    The product I was looking for at a sensible price

    There was nothing to dislike and I am using it as a supplement

  84. Sana Patel

    Best vitamin D

    Excellent vegetarian Vitamin d3 at great price! Easy to swallow tablets and came in a box that fitted through my letterbox.This is my second product from this company and am very pleased with the quality, prices, and shipping.

    12 people found this helpful
  85. Aleksandra


    as expected

  86. Steve Grant

    It will boost your immunity to infection

    This vitamin is vital for people living in countries that do not get a great deal of natural sunlight. It will boost your immune system.

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