Soy protein isolate in 4 flavours, from £0.40 per serving.
The bottom line
Bulk Soya Protein Isolate is a soy protein isolate that covers the usual bases in this category at a fair price. A reasonable pick in this category if the flavour you want is in stock.
No price history yet for Unflavoured · 5kg.
| Values for Unflavoured. | Per 30g | Per 100g |
|---|---|---|
| Energy | 109kcal | 364kcal |
| Fat | 0.1g | 0.4g |
| of which saturates | 0g | 0g |
| Carbohydrate | 1.1g | 3.5g |
| of which sugars | 0g | 0g |
| Fibre | 0g | 0.2g |
| Protein | 26g | 85g |
| Salt | 0.78g | 2.6g |
From bulk.com, read 17 Oct 2026. See what we read.
Soya Protein Isolate.
Allergens: For allergens, see ingredients in bold. May contain milk, cereals containing gluten, mustard, sesame seeds, sulphur dioxide and sulphites.
Unflavoured, cheapest retailer for each size
| Size | Servings | Price | Per serving | Per kg |
|---|---|---|---|---|
| 1kg | 33 | £14.99 | £0.45 | £14.99 |
| 2.5kg | 83 | £34.99 | £0.42 | £14.00 |
| 5kg | 166 | £66.99 | £0.40 | £13.40 |
The 5kg works out 11% cheaper per serving than the 1kg.