Whey + Fibre

by Prozis

A trusted everyday protein: affordable, versatile, and designed to support your training goals with every shake.

Up to 9g protein per serving
Low fat - under 3g per 100g
For shakes, smoothies, baking and more

FlavourChocolate-Hazelnut

Size700g

Best price today

In stock

£19.58

£2.80 / 100g

Exclusive WheyWise Code

Get 10% off your order

Secure retailer checkout

We may earn a commission at no extra cost to you. Affiliate disclosure

Transparent protein profile

What's inside

Values per 100g, with the amount in one 20g serving

43g protein

8.6g per 20g serving

40g carbohydrates

8g per 20g serving

3g fat

0.6g per 20g serving - very lean

369 kcal

74 kcal per 20g serving

View full nutritional information

Nutrition per 100g and per 20g serving
Nutrient	Per 100g	Per serving (20g)
Protein	43g	8.6g
Calories	369.1 kcal	74 kcal
Carbohydrates	40g	8g
Fat	2.9g	0.6g

Know when to buy

Price history

Lowest price on record, any flavour or size

£2.80/100g (£19.58 for 700g on 13 Oct 2026)

700g · all flavours · price per pack

Prozislatest £19.58 (one check so far)

Quick answers

Is this right for you?

Who is it for?

Prozis Whey + Fibre 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 43g of protein per 100g (around 9g per 20g serving), Prozis Whey + Fibre sits in a competitive position for a whey concentrate product.

What else do you need to know?

Prozis Whey + Fibre is a whey concentrate protein powder made by Prozis. It comes in 700g 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 Prozis Whey + Fibre in the UK?

The best price we have verified today is £2.80 per 100g for the 700g bag, checked 13 Oct 2026. Use the buy button above to go straight to it.

How much protein does Whey + Fibre contain per 100g?

Whey + Fibre contains 43g of protein per 100g, with 8.6g per 20g serving. It is a whey concentrate product.

Is Prozis Whey + Fibre currently in stock?

At the last check, 1 out of 1 tracked variants was in stock. Stock status carries the same fetch time as the price shown above, so check the retailer listing before ordering.