Live Amazon price · product details checked 5 September 2026
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Optimum Nutrition Platinum Hydro Whey, Hydrolysed Whey Protein Isolate sits on our protein powder shelf, where the ranking comes from what buyers actually said rather than from what the box says. From the seller's own listing: Advanced hydrolysed whey protein isolates – Contains 30 g of the fastest digesting protein available. Great before or after exercise, between meals, with a meal, or any time of day where you need extra protein in your nutrition. That is the maker talking, not us, so read it as a claim rather than a finding. On Amazon it sits at 4.4 out of 5 across 6,300 ratings. How that compares with the rest of the shelf is below.
Across the 45 rated protein powder products we track, the middle of the pack sits at 4.4 out of 5. This one scores 4.4. 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.
6,300 people rated it, where the shelf median is 474. 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 £14.66 to £170, with the midpoint around £40.00. It costs more than most while rating around the middle, so the extra money needs to be buying something specific: pack size, brand you trust, or a detail below that matters to you.
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.
