Live Amazon price · product details checked 5 September 2026
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Nootro Labs Essentials Vitamin D3 4000 iu and K2 is one of 51 vitamin d products on our shelf, compared on what buyers rated it, how many of them there were, and what it costs today. Here is how the maker describes it: Helps support bones and joints by aiding calcium absorption, with vitamin D3 and K2 working together more effectively than calcium alone. Ideal for daily use. This vitamin D3 K2 combo supports bone health and joint function, helping maintain strength and stability. Suitable for those looking to support joints during ageing. That is the maker talking, not us, so read it as a claim rather than a finding. It holds 4.5 out of 5 on Amazon from 113 ratings. Where that leaves it next to the rest of the shelf is set out below.
Taken from the wording on the listing itself and the price we track, not from a brand claim about value. How we rank →
We track 51 rated vitamin d products, and the middle of that pack scores 4.7 out of 5. This one is on 4.5. Bottom quarter of the shelf. Not a red flag by itself, but similar money buys a better-rated option here, so the case for this one has to come from somewhere else.
113 people rated it, where the shelf median is 1,800. For this shelf that's thin. A handful of new reviews could shift it noticeably, so read the score as an early signal rather than a verdict.
The shelf runs from £3.50 to £29.99 and the midpoint is about £8.49. On price, this one is in the middle third. Which is where most sensible buys end up: not the cheapest on the shelf, and not the one you pay a name for.
Worked out from the 51 vitamin d products we track, not from the brand's own claims. How we rank →
Taken from the product listing via Amazon's product API. These are the seller's claims, not our test results.
Short on time? Our best vitamin d supplement uk shortlist narrows this shelf down to a handful.
