Whey Isolate Protein
by Promix Nutrition
Pure protein, minimal extras: filtered for maximum protein content with very low fat and carbs per serving.
- Up to 30g protein per serving
- Low fat - under 3g per 100g
- Extra filtered for reduced lactose
- For shakes, smoothies, baking and more
Flavour pictures illustrate the taste, not the powder's colour or ingredients.
Size1.13kg
Best price
In stock£57.15
£5.04 / 100g
Secure retailer checkout
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Transparent protein profile
What's inside
Values per 100g, with the amount in one 38g serving
79g protein
30g per 38g serving - solid protein content
18g carbohydrates
7g per 38g serving
1g fat
0.5g per 38g serving - very lean
395 kcal
150 kcal per 38g serving
View full nutritional information
| Nutrient | Per 100g | Per serving (38g) |
|---|---|---|
| Protein | 78.9g | 30g |
| Calories | 394.7 kcal | 150 kcal |
| Carbohydrates | 18.4g | 7g |
| Fat | 1.3g | 0.5g |
Know when to buy
Price history
Lowest price on record, any flavour or size
£4.72/100g (£53.54 for 1.13kg on 16 Sept 2026)
1.13kg · all flavours · price per pack
- Healflatest £63.50, lowest £53.54, highest £63.50 in the last 90 days
Quick answers
Is this right for you?
Who is it for?
Promix Nutrition Whey Isolate Protein is designed for athletes, lean-bulk dieters, and anyone who wants maximum protein with minimal fat and carbs. Whey isolate is also a better option for people with mild lactose sensitivity, since the extra filtration removes most of the lactose.
What can you expect?
A lean, fast-absorbing protein with very low fat and carbohydrate content. Whey isolate goes through extra filtration to deliver 85-95% protein purity, which means more protein per scoop and fewer calories from filler. Expect quick absorption, making it ideal straight after a workout. With 78.9g of protein per 100g (around 30g per 38g serving), Promix Nutrition Whey Isolate Protein sits in a solid mid-range for a whey isolate product.
What else do you need to know?
Promix Nutrition Whey Isolate Protein is a whey isolate protein powder made by Promix Nutrition. It comes in 1.13kg sizes. Every price on WheyWise is read from the retailer’s own page and re-checked daily and sorted by cost per 100g, so you can see both the cheapest option and how current it is. All links to Amazon and retailer sites are affiliate links - this is how WheyWise stays free.
Frequently asked questions
Where is the cheapest place to buy Promix Nutrition Whey Isolate Protein in the UK?
We refresh Promix Nutrition Whey Isolate Protein pricing daily from Amazon UK and show the fetch time next to every figure. If no verified price is showing above, we do not currently hold one we would stand behind, and the buy button will take you to the live listing to check.
How much protein does Whey Isolate Protein contain per 100g?
Whey Isolate Protein contains 78.9g of protein per 100g, with 30g per 38g serving. It is a whey isolate product.
Is Promix Nutrition Whey Isolate Protein currently in stock?
At the last check, 4 out of 4 tracked variants were in stock. Stock status carries the same fetch time as the price shown above, so check the retailer listing before ordering.
Pick your pack
1 size · Chocolate · cost per 100g for each
Where to buy in the UK
Chocolate · 1.13kg · 1 offer for this selection · sorted by cost per 100g
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