Live Amazon price · product details checked 5 September 2026
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We keep HOWARD & JAMES Vitamin D3 4000iu Plus Vitamin K2 100ug 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: 4 MONTH'S FULL SUPPLY, Contains 2000% NRV of High Absorption Cholecalciferol D3 Vitamin and 133% NRV of Vitamin K2 - all in one easy to swallow tablet. As approved by the European Food Safety Authority (EFSA), Contributes to: The Maintenance of Normal Bones, Teeth and Muscle Function, Normal Function of the Immune System. That is the maker talking, not us, so read it as a claim rather than a finding. It holds 4.6 out of 5 on Amazon from 6,000 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 →
The typical vitamin d product on our shelf scores 4.7 out of 5, measured across 51 rated products. This one comes in at 4.6. That's inside the bottom quarter of the shelf. It isn't a warning, but better-rated options do sit alongside it at similar money, so you would want a specific reason to pick this one.
Behind that score sit 6,000 ratings, against a shelf median of 1,800. Enough reviews to trust the direction, not enough to close the question.
The shelf runs from £3.50 to £29.99 and the midpoint is about £8.49. On price, this one is in the bottom third. Buying at the cheap end is fine as long as the rating stands up. Here it does not quite, so check what has been cut before assuming the saving is free.
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.
