PSN Soy Protein Powder
by Pure Source Nutrition
Plant-powered performance: a dairy-free protein source that delivers on taste, nutrition, and sustainability.
- Up to 27g protein per serving
- Low fat - under 3g per 100g
- Low carb - suitable for keto and cutting diets
- 100% plant-based and dairy-free
- For shakes, smoothies, baking and more
Flavour pictures illustrate the taste, not the powder's colour or ingredients.
Best price today
In stock£39.99
£0.80 / 100g
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Transparent protein profile
What's inside
Values per 100g, with the amount in one 30g serving
90g protein
27g per 30g serving with minimal filler
1g carbohydrates
Extremely low carbs - suitable for keto and low-carb diets
2g fat
0.5g per 30g serving - very lean
369 kcal
111 kcal per 30g serving
View full nutritional information
| Nutrient | Per 100g | Per serving (30g) |
|---|---|---|
| Protein | 90g | 27g |
| Calories | 369 kcal | 111 kcal |
| Carbohydrates | 1.4g | 0.4g |
| Fat | 1.5g | 0.5g |
Know when to buy
Price history
Lowest price on record, any flavour or size
£0.80/100g (£39.99 for 5kg on 17 Sept 2026)
5kg · all flavours · price per pack
- Amazon UKlatest £39.99, lowest £39.99, highest £39.99 in the last 90 days
Quick answers
Is this right for you?
Who is it for?
Pure Source Nutrition PSN Soy Protein Powder is designed for plant-based athletes, vegans, and anyone looking to avoid dairy. It also suits people with lactose intolerance or those who prefer a more sustainable protein source without compromising on their daily protein targets.
What can you expect?
A plant-derived protein that delivers a complete amino acid profile without any animal products. Modern vegan proteins have come a long way in taste and texture. You can expect smooth mixing, solid protein content, and a product free from dairy, lactose, and cholesterol. With 90g of protein per 100g (around 27g per 30g serving), Pure Source Nutrition PSN Soy Protein Powder sits at the higher end for a vegan product.
What else do you need to know?
Pure Source Nutrition PSN Soy Protein Powder is a vegan protein powder made by Pure Source Nutrition. It comes in 250g, 500g, 750g, 1kg, 2.5kg, 5kg 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 Pure Source Nutrition PSN Soy Protein Powder in the UK?
The best price we have verified today is £0.80 per 100g for the 5kg bag, checked 26 Oct 2026. Use the buy button above to go straight to it.
How much protein does PSN Soy Protein Powder contain per 100g?
PSN Soy Protein Powder contains 90g of protein per 100g, with 27g per 30g serving. It is a vegan product.
Is Pure Source Nutrition PSN Soy Protein Powder currently in stock?
At the last check, 8 out of 8 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
6 sizes · Vanilla · cost per 100g for each
The 5kg works out at £0.80 per 100g. The 250g costs £2.20. Same powder, 2.7x the price per gram.
Where to buy in the UK
Vanilla · 5kg · 1 offer for this selection · sorted by cost per 100g
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