Live Amazon price · product details checked 5 September 2026
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THORNE Vitamin C with Flavonoids, 90 Capsules sits on our vitamin c shelf, where the ranking comes from what buyers actually said rather than from what the box says. From the seller's own listing: Each capsule contains 500 mg vitamin C (ascorbic acid) and 75 mg citrus bioflavonoids. Vitamin C contributes to the normal function of the immune system and the protection of cells from. Vitamin C contributes to normal collagen formation for healthy skin, cartilage, bones, teeth, and gums. That is the maker talking, not us, so read it as a claim rather than a finding. Buyers have it at 4.8 out of 5 from 3,600 ratings. We work out below what that is worth against everything else on the shelf.
Across the 51 rated vitamin c products we track, the middle of the pack sits at 4.6 out of 5. This one scores 4.8. Top quarter of the shelf. In an aisle where nearly everything rates well, the distance above the middle is the part worth reading, and this one has it. Weighted for review volume, we place it first on this shelf.
3,600 people rated it, where the shelf median is 1,300. A score built on that many opinions is hard to shift and hard to game, which is why we weight review volume rather than ranking on stars alone.
On money, this sits in the top third of a shelf running from £4.87 to £73.00, with the midpoint around £9.99. It costs more than most and is rated above most, so the premium at least tracks something buyers recognise.
Worked out from the 51 vitamin c 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.
