Live Amazon price · product details checked 5 September 2026
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PhD Nutrition Diet Whey High Protein Lean Matrix is one of 45 protein powder 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: Packed with protein to help maintain muscle mass, this low-calorie powder is ideal for use during a diet. the perfect supplement for ambitious athletes. Enriched with grass-fed whey protein, it provides the body with essential amino acids that support metabolism and belong in any balanced diet. That is the maker talking, not us, so read it as a claim rather than a finding. 6,600 ratings put it at 4.3 out of 5. The comparison with the rest of the shelf follows.
Shelf price range checked · details
We track 45 rated protein powder products, and the middle of that pack scores 4.4 out of 5. This one is on 4.3. That lands in the bottom quarter. Nothing alarming on its own, though at this money you can find better-rated neighbours, so there should be a particular reason for choosing it.
That score rests on 6,600 ratings. The median for this shelf is 474. That's a deep enough base for the score to be stable, and it is the reason we rank on volume as well as stars.
Price-wise it falls in the top third of a shelf that stretches £14.64 to £170, with £46.40 in the middle. Paying above the middle of the shelf needs a reason the star rating does not supply, because on ratings alone the extra money is not buying an advantage here.
Shelf prices checked · details
Worked out from the 45 protein powder 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.
