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Vitamin D 1000IU 365 Vegetarian Tablets | Optimum Strength Cholecalciferol Vitamin D3 Supplement | UK Manufactured
Supplement Tree

Vitamin D 1000IU 365 Vegetarian Tablets | Optimum Strength Cholecalciferol Vitamin D3 Supplement | UK Manufactured

★4.7 / 5 ★★★★★ on Amazon · 772 customer ratings · recorded 27 Jul 2026
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Live Amazon price · product details checked 5 September 2026

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Overview

We keep Supplement Tree Vitamin D 1000IU 365 Vegetarian Tablets on our vitamin d shelf alongside 50 others, and rank it on rating, review volume and live price rather than on the brand. The manufacturer puts it this way: Optimum Dose Vitamin D3 (Cholecalciferol) 1000iu supplement. Each bottle contains 365 tablets providing you 12 months supply of Vitamin D in an easy to swallow vegetarian tablet. Because natural food sources of vitamin D are rare, the most effective ways to receive adequate levels are through sunlight exposure and supplements. That is the maker talking, not us, so read it as a claim rather than a finding. Buyers have it at 4.7 out of 5 from 772 ratings. We work out below what that is worth against everything else on the shelf.

At a glance
Brand
Supplement Tree
Amazon rating
4.7 out of 5, from 772 ratings
Against the shelf
exactly the vitamin d median of 4.7
Our placing
17 of 51, weighted for how many people rated it
Where the price sits
Cheaper end of a shelf running £3.50 to £29.99
How settled
A middling number of ratings for this shelf
In the pack
365 tablets, so the per-unit cost is shown with the price
Read from the label
Strength
1,000 IU
Same figure in mcg
25 mcg
Form on the label
D3 (cholecalciferol)
Tablets in the pack
365
Cost per tablet
1.9p

Taken from the wording on the listing itself and the price we track, not from a brand claim about value. How we rank →

How it compares on the vitamin d shelf

Across the 51 rated vitamin d products we track, the middle of the pack sits at 4.7 out of 5. This one scores 4.7. That sits mid-table. Ratings this close together don't decide anything on their own, so weigh pack size, price per unit and the specifics below instead.

772 people rated it, where the shelf median is 1,800. That's enough for the score to mean something without being the last word on it.

On money, this sits in the bottom third of a shelf running from £3.50 to £29.99, with the midpoint around £8.49. Cheap with a middling rating is a fair trade if the specifics suit you, and it is the usual reason to pick something at this end of the shelf.

Worked out from the 51 vitamin d products we track, not from the brand's own claims. How we rank →

Key features, as the manufacturer lists them

Taken from the product listing via Amazon's product API. These are the seller's claims, not our test results.

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