100% Micellar Casein Black
by Protein Works
Slow-release recovery: a thick, satisfying shake that feeds your muscles over hours, not minutes.
- Up to 23g protein per serving
- Low fat - under 3g per 100g
- Slow-digesting - ideal before bed
- For shakes, smoothies, baking and more
Flavour pictures illustrate the taste, not the powder's colour or ingredients.
Best price today
In stock£104.99
£2.62 / 100g
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Transparent protein profile
What's inside
Values per 100g, with the amount in one 30g serving
78g protein
23.4g per 30g serving - solid protein content
7g carbohydrates
2g per 30g serving - low carb
2g fat
0.6g per 30g serving - very lean
352 kcal
106 kcal per 30g serving
View full nutritional information
| Nutrient | Per 100g | Per serving (30g) |
|---|---|---|
| Protein | 78g | 23.4g |
| Calories | 352 kcal | 106 kcal |
| Carbohydrates | 6.8g | 2g |
| Fat | 2g | 0.6g |
Know when to buy
Price history
Lowest price on record, any flavour or size
£2.20/100g (£21.99 for 1kg on 3 Aug 2026)
4kg · all flavours · price per pack
- Protein Workslatest £104.99, lowest £104.99, highest £104.99 in the last 90 days
Quick answers
Is this right for you?
Who is it for?
Protein Works 100% Micellar Casein Black is designed for people who want sustained protein release, especially overnight. Casein digests slowly, making it ideal as a bedtime shake or for anyone who goes long stretches between meals and wants to keep muscle protein synthesis ticking over.
What can you expect?
A thick, slow-digesting shake that keeps you feeling full for longer. Casein forms a gel in the stomach, releasing amino acids steadily over several hours. This makes it less ideal immediately post-workout but excellent for sustained recovery windows. With 78g of protein per 100g (around 23g per 30g serving), Protein Works 100% Micellar Casein Black sits in a solid mid-range for a casein product.
What else do you need to know?
Protein Works 100% Micellar Casein Black is a casein protein powder made by Protein Works. It comes in 500g, 1kg, 2kg, 4kg 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 Protein Works 100% Micellar Casein Black in the UK?
We refresh Protein Works 100% Micellar Casein Black 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 100% Micellar Casein Black contain per 100g?
100% Micellar Casein Black contains 78g of protein per 100g, with 23.4g per 30g serving. It is a casein product.
Is Protein Works 100% Micellar Casein Black currently in stock?
At the last check, 8 out of 16 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
4 sizes · Banana Smooth · cost per 100g for each
The 4kg works out at £2.62 per 100g. The 500g costs £3.20. Same powder, 1.2x the price per gram.
Where to buy in the UK
Banana Smooth · 4kg · 1 offer for this selection · sorted by cost per 100g
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