USN Isolean diet whey 1 1400x900pxIf you’re expecting me to write anything negative about this protein powder, skip to another page because there’s very little about USN Isolean that I’m not head-over-heels in love with. The taste, texture, nutritional content and range of flavours are faultless—whilst I could leave it there. Let’s dig a little deeper.

My principle requirement for any protein powder is to be a diet whey: low calorie, high protein and minimal carbohydrates. What first attracted me to USN Isolean Diet Whey was its nutrition, with a whopping 25g of protein in return for just 1.5g of carbohydrate, it seemed too good to be true—but it wasn’t. I bought 1kg of the cookies and cream flavour and was eager to try it. A little giddy with excitement I dashed home and chucked a 35g scoop into my shaker with 200ml of ice-cold water and my mind was blown.

First, I was very impressed at how well the powder mixes with water, a lot of whey drinks need some sort of super-human shaking and still might not mix that well. Even my beloved PHD Diet Whey can be a challenge to get an even mix in a shaker (sorry, I have high standards). But Isolean was perfect with just a few quick shakes. Second, the flavour was mightily impressive. Whilst I’ve had shakes with a more intense taste, USN’s Isolean is nicely balanced and ever-so-slightly too sweet.

Whilst the principle requirement for any whey powder is to enjoy it as a delicious and healthy shake, it’s often nice to harness its nutritional content and add it to other foods—this is where Isolean didn’t always live up the incredibly high expectations I’ve laid before it. Combined with milk, Greek yoghurt and a spoonful of Whole Earth Peanut Butter—I created one of the most sublime and unforgettable drinking experiences I can remember. The cookies and cream flavour of the whey enhanced by the creamy milk and yoghurt, with just enough kick from the Peanut butter to punch through. However, mix USN Isolean with porridge and it’s not such a pleasurable experience. I’ve recently become accustomed to mixing PHD Diet Whey into my porridge—when I ran out and used Isolean instead, the result was nowhere near as good. However, I doubt you’re reading this with only porridge in mind. If you’re after a great tasting and nutritious diet why shake, there’s very few products which even compete with USN Isolean.

Whey protein powder in scoop with vitamins and plastic shakerInterestingly, diet whey powders are about so much more than just the macronutrient content, with additional supplements to help aid weight loss and the building of lean muscle mass. Both PHD Diet Whey and USN Isolean contain green tea extract, L-Carnitine and Flaxseed powder which aid weight loss, as well as over the recommended daily dosage of vitamins C, D, B6 and B12—to keep our immune systems in check. Put simply, these ‘diet’ powders are a healthy addition to any diet, whether or not you’re trying to lose weight.

Available in Cookies and Cream, Battenburg, Strawberry Cheesecake and Cherry Bakewell flavours, there’s something suit everybody’s preferred taste.

Nutrition (35g serving):

Calories:                       132kcal
Carbohydrate:             1.5g
Sugar:                           1.2g
Fat:                                2.1g
Protein:                        24.5g
Fibre:                            2.8g

Other than the porridge scenario, I can’t think of anything negative to say about USN Isolean Diet Whey, if you’re after a great tasting diet shake then why not give it a try? If you’ve tried the product and would like to share your opinion, please do so in the comments section.

USN Isolean Diet Whey











  • Tastes exceptional
  • Excellent nutritional content
  • Mixes well with water and milk
  • Versatile, can be used in many ways
  • Best texture of any protein powder


  • Doesn’t mix well with porridge.

Comments (3)

  • The week before Christmas – FitKno

    15th May 2019 at 8:30 am

    […] good to get a few days of calorie deprivation in now. My meals at work consisted of protein shakes (USN Isolean, which I have recently moved to from PHD Diet Whey), fruit and fat free Greek yogurt. I focussed on […]

  • A Mixed Bag – FitKno

    15th May 2019 at 12:19 pm

    […] peanut butter on toast for lunch, then roast cod and steamed vegetables for dinner, with a few USN Isolean protein shakes in between. Having eaten very little on Friday, I took the opportunity to weigh myself on Saturday […]

  • ON Opti-Lean Whey – FitKno

    15th May 2019 at 7:10 pm

    […] was a strong chocolate taste, but it wasn’t sweet enough for my liking. Having really enjoyed USN’s Iso Lean for the past couple of months, which has a similar nutritional content, but tastes divine, I set […]

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