Home / Protein / Protein Powders / Micellar Casein Protein /

Optimum Nutrition 100% Gold Standard Casein Protein 1.8kg -55 Servings

• 24g of Slow-Digesting Micellar Casein per Serving
• Supports Muscle Growth
• Ideal for Use Between Meals & Before Bed
Use code READY
  In Stock

SRP £79.99  |  You Save £25.00 (31%) TODAY

   FREE UK delivery on orders over £50

Usually dispatched within 1 working day

Product info

• 24g of Slow-Digesting Micellar Casein per Serving
• Supports Muscle Growth
• Ideal for Use Between Meals & Before Bed

Optimum Nutrition 100% Gold Standard Casein Protein is a Micellar Casein which is low in fat, sugar and carbohydrate.

Each serving provides 24g of slow release protein providing your body with a continual supply of high quality Protein and Amino Acids. It contains Branched Chain Aminos and Amino Acids such as L-Glutamine, Leucine, Isoleucine and L-Valine. Amino acids are of importance due to their role in stimulating protein synthesis. Protein contributes to a growth in and maintenance of muscle mass. Therefore increasing protein intake may be of particular benefit to those working to build muscle mass.

Slow digesting Protein and Amino Acids, such as found in Optimum Nutrition 100% Gold Standard Casein Protein, helps to satisfy your appetite. It can be enjoyed at any time but is of particular use before bedtime as a continual protein source to feed your muscles.

Customer Favourites


Customer Reviews

Average Customer Review - Write a Review
- Chocolate Is Heavenly
Pete, Rochdale 23/04/2013
Usually have the banana and have recently tried a sample of the chocolate and vanilla. Chocolate is light years better and I shall be stocking up once they are back in stock! Excellent quality casein that mixes very easily
- Lush
Jak, Bristol 21/11/2011
Great tasting chocolate is the best flavour i have ever tasted.
Retrieving Reviews....

Customer Discussion

Join in the conversation about this product...

(All comments subject to moderation)


Read product label before use.
Consume approximately 1 gram of protein per pound of body weight per day through a combination of high protein foods and supplements. For best results, consume your daily protein allotment over several small meals spread evenly throughout the day.
TIP: Try using "slower" Gold Standard 100% Casein™ with "faster" proteins like Gold Standard 100% Whey™ or Pro Complex® at different times for maximum effectiveness. Take Gold Standard 100% Casein™ immediately before bed and in between meals when delayed protein delivery is desired.

Warnings: Do not use as a sole source of nutrition for weight loss and maintenance.
Caution: Keep out of reach of children. Do not exceed recommended daily intake.
Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle.

Serving Amount

Per 33g:
Energy: 484kJ /115 kcal
Protein: 24g
Total Carbohydrate: 3.5g
Of Which Sugars: 1.5g
Total Fat: 0.7g
Of Which Saturates: 0.3g
Of Which Trans Fat: 0g
Dietary Fibre: 1g
Sodium: 242mg
Salt Equivalent: 0.6g

Please note that nutritional information is a guide only. Nutritional breakdown for invidual flavours may vary slightly.


Micellar Casein (Milk) (Contains Emulsifier: Soy Lecithin), Fat-Reduced Cocoa Powder, Flavour, Salt, Thickeners (Cellulose Gum, Carrageenan Gum, Guar Gum), Sweeteners (Acesulfame Potassium, Sucralose), Enzyme Complex (Amylase, Protease, Cellulase, Beta-D-Galactosidase, Lipase).

Please note that ingredients listing is a guide only. Information for individual flavours may vary slightly.
Allergy Advice: For allergens, see ingredients in bold.

Have You Considered

Home / Protein / Protein Powders / Micellar Casein Protein /
View Desktop Site >
chat icon

Live Chat

Chat opens up in a new tab but will not close this window

LiveZilla Live Chat Software