Protein iconprotein Vitamins iconvitamins Vegan iconvegan Bars iconbars Weight loss iconweight loss
New & improved formula with sustained release protein
Contributes to weight loss*
Clarinol® CLA, Glucomannan, L-Carnitine & Green Tea

Diet Protein Shake

Diet Protein Shake contains less than 4g of carbohydrate per serving with all the protein, as well as added glucomannan contributing to weight loss.*

Our Diet Protein Shake takes the best aspects of our original formula and pushes them even further. It combines a range of protein sources plus added nutritional supplements to create a protein formula for anyone on an energy restricted diet.

The protein in Diet Protein Shake is a blend of whey protein, milk protein concentrate and egg white powder, providing a combination of fast and slow release proteins. We’ve halved the carb content of our original Diet Protein Shake™ formula, and added glucomannan, a popular diet ingredient that contributes to weight loss.*

  • Glucomannan:
    Derived from the konjac plant, glucomannan contributes to weight loss in the context of an energy restricted diet.
  • Green Tea Extract:
    Green tea has been popular in China for centuries and is a popular supplement in its own right, making a unique addition to this formula.
  • Clarinol® CLA:
    Conjugated linoleic acid (CLA) is a form of omega-6 essential fat. Clarinol® is the most premium source of CLA available, with unmatched purity and quality.
  • Glutamine Peptides:
    Glutamine is the most abundant amino acid in muscle.
  • Acetyl L-Carnitine:
    Diet Protein Shake contains an incredible 750mg of acetyl l-carnitine per serving.

The Purpose

We designed our Diet Protein Shake for trainers looking to stimulate weight loss* while maintaining muscle mass as part of a healthy diet and active lifestyle. Use Diet Protein Shake to ensure you’re maintaining your vital protein intake as part of an energy restricted diet.

*contains glucomannan which, in the context of an energy restricted diet, contributes to weight loss. The beneficial effect is obtained with a daily intake of 3g glucomannan split across three 1g doses taken with 1-2 glasses of water before meals, in the context of an energy restricted diet.


  • Morning, Noon or Night
    Great any time of day, whatever your workout regime.
  • Muscle Maintenance
    High protein, which contributes to the maintenance of muscle mass.
  • Combined Action
    By blending unique ingredients with different purposes, you get the best potential in a single supplement.


Mix 60g (2 scoops) with 400ml water in a Bulk™ Shaker Bottle and consume immediately. Use 2-3 servings daily. Warning: This product contains Glucomannan (Konjac) Powder and should be taken with plenty of water to ensure it reaches the stomach. The product is not suitable for people with swallowing difficulties.

Related Products

Diet Protein Shake combines effectively with a number of products. Pure Whey Isolate™ is a great way of increasing your protein intake further, particularly after exercise. Organic Virgin Coconut Oil is also perfect for cooking with as a healthier alternative to olive oil or sunflower oil. Diet Protein Shake combines well other supplements such as Complete Multivitamin ComplexComplete Thermogenic / Stimulant Free, Chia Seeds

Looking for more? Discover our range of diet whey and diet shakes.


Nutrition per 100g per 60g Serving
Energy kJ/kcal 1554/368 932/221
of which saturates
of which sugars
Fibre 1.0g 0.6g
Protein 67g 40g
Salt 0.67g 0.20g

ACTIVE INGREDIENTS: Per 60g serving:

Glutamine Peptides 4.2g, Clarinol® CLA 1.6g, Glucomannan 1g,

Acetyl-L-Carnitine 750mg, Green Tea Extract 150mg.



Chocolate flavour

Whey Protein Concentrate (Milk), Milk Protein Concentrate, Glutamine Peptides (Wheat), Fat Reduced Cocoa Powder, Egg White Powder, Clarinol® CLA (Safflower Seed Oil, Corn Syrup, Sodium Caseinate (Milk), Silicon Dioxide, Mixed Tocopherol and Ascorbyl Palmitate (Soya)), Glucomannan, Flavouring, Acetyl L-Carnitine, Thickener (Xanthan Gum), Green Tea Extract, Sweetener (Sucralose).

Strawberry flavour

Whey Protein Concentrate (Milk), Milk Protein Concentrate, Glutamine Peptides (Wheat), Egg White Powder, Clarinol® CLA (Safflower Seed Oil, Corn Syrup, Sodium Caseinate (Milk), Silicon Dioxide, Mixed Tocopherol and Ascorbyl Palmitate (Soya)), Glucomannan, Flavouring, Acetyl L-Carnitine, Soya Lecithin, Colour (Beetroot Red), Thickener (Xanthan Gum), Green Tea Extract, Acid (Citric Acid), Sweetener (Sucralose).

Suitable For

Vegetarians, Halal.

Allergen Information

For allergens, including cereals containing gluten, see ingredients in bold.


Store in a cool dry place.

Advisory information

Food supplements are not intended to replace a varied and balanced diet and a healthy lifestyle. Do not exceed the recommended usage. Keep out of reach of children.

Although every care has been taken to keep product information up to date on our website, please always read the information provided on product label or packaging before use.

The actual results of consuming dietary supplements may differ from those implied. Individuals may respond differently, and the suggested results presume appropriate nutrition and training plan.

Our Planet

Over 87% of our pouches are fully home compostable, using a triple-layer of natural cellulose, biodegradable film and FSC-certified paper. Click here to learn more about the Our Planet project.

This year alone we've made some big changes:

  • Over 90%
    of all our packaging materials have transitioned to sustainable alternatives.
  • 12 million
    pieces of single-use plastic removed from our packaging.
  • Over 1 million
    boxes replaced with FSC certified cardboard.
Forest river

Customer Reviews

Customer Reviews Subtitle

Diet Protein Shake

Protein Shake For Weight Loss*

Read More
As low as £17.29 Save £4.70 Regular Price £21.99
In stock
Only %1 left
As low as £17.29 Save £4.70 Regular Price £21.99
vegetarian halal ...

UP TO 80% OFF + Free Iconic Bundle - Spend £30 - NO CODE REQUIRED

  • Free delivery on orders over £39
  • Standard* Order value Price
    2-4 days Over £39 FREE
    2-4 days Under £39 £3.95
    *When orders are placed before 8pm Mon-Thurs, 3pm Sun
    †When orders are placed before 9pm Mon-Thurs, 3pm Sun
  • Hassle-free returns. Find out more.
  • Sign up to Bulk™ Boost for free and unlimited Next-Day Delivery for a whole year*. Speedy, hassle-free shopping just got even better.

    Learn more

  • Choose your way to pay
Protein Shake For Weight Loss*

Share your journey on Instagram @bulk

Stay in Touch

Fancy discounts and fitness tips delivered straight to your inbox? You know what to do.