Whey Protein Isolate
by Thorne
Pure protein, minimal extras: filtered for maximum protein content with very low fat and carbs per serving.
- Up to 21g protein per serving
- Extra filtered for reduced lactose
- For shakes, smoothies, baking and more
Flavour pictures illustrate the taste, not the powder's colour or ingredients.
Best price
In stock£46.87
£5.17 / 100g
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Transparent protein profile
What's inside
Values per 100g, with the amount in one 30.2g serving
70g protein
21g per 30.2g serving - solid protein content
13g carbohydrates
4g per 30.2g serving
3g fat
1g per 30.2g serving - moderate fat
331 kcal
100 kcal per 30.2g serving
View full nutritional information
| Nutrient | Per 100g | Per serving (30.2g) |
|---|---|---|
| Protein | 69.5g | 21g |
| Calories | 331.1 kcal | 100 kcal |
| Carbohydrates | 13.2g | 4g |
| Fat | 3.3g | 1g |
Know when to buy
Price history
Lowest price on record, any flavour or size
£5.17/100g (£46.87 for 906g on 16 Sept 2026)
906g · all flavours · price per pack
- Healflatest £51.13, lowest £46.87, highest £51.13 in the last 90 days
Quick answers
Is this right for you?
Who is it for?
Thorne Whey Protein Isolate 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 69.5g of protein per 100g (around 21g per 30.2g serving), Thorne Whey Protein Isolate sits in a solid mid-range for a whey isolate product.
What else do you need to know?
Thorne Whey Protein Isolate is a whey isolate protein powder made by Thorne. It comes in 837g, 906g 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 Thorne Whey Protein Isolate in the UK?
We refresh Thorne Whey Protein Isolate 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 Protein Isolate contain per 100g?
Whey Protein Isolate contains 69.5g of protein per 100g, with 21g per 30.2g serving. It is a whey isolate product.
Is Thorne Whey Protein Isolate currently in stock?
At the last check, 3 out of 3 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
2 sizes · Chocolate · cost per 100g for each
The 906g works out at £5.17 per 100g. The 837g costs £6.11. Same powder, 1.2x the price per gram.
Where to buy in the UK
Chocolate · 906g · 2 offers for this selection · sorted by cost per 100g
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