High Protein
23.3g Per Serving
The Health Project Ultimate Casein Protein 2kg — image 2 - 2kg / Chocolate
The Health Project

The Health Project Ultimate Casein Protein 2kg

★★★★★
4.81 | 63 reviews |  66 Servings
£34.99 £49.99 £0.53/serving
Thicker Protein Option Slow-release casein protein per scoop - sustained amino release across the night-time window.
Different To Whey Sip slowly or mix thick before bed - suited to the 6-8 hour sleep window most athletes leave unfuelled.
2kg Size Slow-release casein protein in 2kg format - sized for the pre-bed window across a full training block.
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17,600+ Reviews
14-Day Returns
Est. 2005
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Food supplements should not be used as a substitute for a varied and balanced diet and healthy lifestyle. If you are pregnant, breastfeeding, taking medication, or under medical supervision, consult your doctor before use. Do not exceed the recommended daily intake. Store out of reach of children.

Chocolate
Strawberry
Vanilla

THP Ultimate Casein Protein, 23.3g Slow-Release Protein for Overnight Recovery and Sustained Amino Acid Delivery

The Health Project Ultimate Casein Protein is a slow-release pre-bed protein built for trainees who want sustained amino acid delivery overnight. Each 30g serving delivers 23.3g of protein at 106 calories, with 0.3g of fat, 2.3g of carbohydrates and 2.3g of sugars. The 2kg tub provides 67 servings.

The protein source is 100% micellar casein - the slower-digesting fraction of milk protein that forms a gel in the stomach and releases amino acids over a 4-6 hour window. This makes it specifically suited to pre-bed consumption where the overnight fast can otherwise leave amino acid levels low for muscle protein synthesis. The 23.3g protein dose sits in the standard daily protein-shake range, and the 106 calorie macro keeps the pre-bed shake from being a meal-replacement load.

What separates casein from whey is the digestion speed. Whey peaks amino acid availability in 30-60 minutes - useful post-training, less useful overnight. Casein releases amino acids steadily for several hours, making it the textbook pre-bed protein for trainees who can't or don't want to wake for a middle-of-the-night protein meal. Most lifters don't need a casein - one daily whey shake covers MPS targets - but those running high-volume training or recovering from intensive blocks benefit from the overnight sustained delivery.

Ultimate Casein suits competitive lifters running high-volume training, trainees in committed muscle-gain phases who want overnight MPS support, anyone who finds whey shakes don't keep them satiated through to morning, and athletes recovering from intensive training blocks. Not the right pick as a post-training shake (whey is faster) or as a sole daily protein (casein-only daily intake isn't optimal). Contains milk.

Key Benefits

Slow-Release Protein

Micellar casein provides sustained amino acid delivery for up to 8 hours of muscle nourishment

Overnight Recovery

Prevents muscle protein breakdown during sleep, maximising recovery and growth

Keeps You Full

The slow-digesting nature of casein promotes satiety and reduces late-night cravings

Premium Micellar Casein

Pure micellar casein — the highest quality slow-release protein with complete amino acid profile

Frequently Asked Questions

What is the difference between casein and whey protein?

Both come from milk, but they digest at different speeds. Whey is fast-digesting and spikes amino acid levels quickly, making it ideal around training. Casein forms a gel in the stomach and releases amino acids slowly over several hours. THP Casein provides 23.3g protein per serving, similar to the 21.3g in THP Ultimate Whey, but the sustained delivery makes casein better for overnight use or long fasting gaps.

Can I use THP Casein as my only protein powder?

You can, but most people benefit from having both whey and casein. Whey is better immediately post-workout when fast amino acid delivery supports recovery. Casein is better before bed or during long gaps between meals. If you can only buy one, whey is generally more versatile. If you are adding a second protein to your routine, casein before bed is the most valuable addition.

How do I mix THP Casein into a thicker pudding texture?

Use less liquid than you would for a whey shake. Mix one scoop with 150 to 200ml of water or milk rather than the usual 250 to 300ml. Stir with a spoon rather than shaking, and let it sit in the fridge for 10 to 15 minutes. The micellar casein thickens naturally as it absorbs liquid. Some people add a small amount of Greek yoghurt or peanut butter to make it even more like a dessert.