Protein Powder
by Greenback
A trusted everyday protein: affordable, versatile, and designed to support your training goals with every shake.
- Up to 20g protein per serving
- For shakes, smoothies, baking and more
Flavour pictures illustrate the taste, not the powder's colour or ingredients.
Size330g
Best price
In stock£19.99
£6.06 / 100g
Secure retailer checkout
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Transparent protein profile
What's inside
Values per 100g, with the amount in one 30g serving
67g protein
20.1g per 30g serving - solid protein content
19g carbohydrates
5.8g per 30g serving
3g fat
1g per 30g serving - moderate fat
380 kcal
114 kcal per 30g serving
View full nutritional information
| Nutrient | Per 100g | Per serving (30g) |
|---|---|---|
| Protein | 67g | 20.1g |
| Calories | 380 kcal | 114 kcal |
| Carbohydrates | 19.3g | 5.8g |
| Fat | 3.3g | 1g |
Know when to buy
Price history
Lowest price on record, any flavour or size
£6.06/100g (£19.99 for 330g on 16 Sept 2026)
330g · all flavours · price per pack
- Healflatest £19.99, lowest £19.99, highest £19.99 in the last 90 days
Quick answers
Is this right for you?
Who is it for?
Greenback Protein Powder is designed for gym-goers and strength trainers looking for an affordable, everyday protein source. Whey concentrate suits anyone who wants a solid protein boost without paying a premium for ultra-high purity. It works well as a post-workout shake or a between-meals top-up.
What can you expect?
A well-rounded protein powder that mixes easily and tastes good. Whey concentrate typically delivers 70-80% protein content with a natural, creamy texture. You will get a reliable source of all essential amino acids including BCAAs to support muscle recovery after training. With 67g of protein per 100g (around 20g per 30g serving), Greenback Protein Powder sits in a solid mid-range for a whey concentrate product.
What else do you need to know?
Greenback Protein Powder is a whey concentrate protein powder made by Greenback. It comes in 330g 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 Greenback Protein Powder in the UK?
We refresh Greenback Protein Powder 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 Protein Powder contain per 100g?
Protein Powder contains 67g of protein per 100g, with 20.1g per 30g serving. It is a whey concentrate product.
Is Greenback Protein Powder currently in stock?
At the last check, 2 out of 2 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 · Vanilla · cost per 100g for each
Where to buy in the UK
Vanilla · 330g · 1 offer for this selection · sorted by cost per 100g
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