Skip to content Skip to navigation
Over 50.000 positive customer and product reviews
International deliveries over +30 countries worldwide
Free standard delivery on orders over £50
Over 50.000 positive customer and product reviews

Gold Standard 100% Casein

Optimum Nutrition
  • 24g of high quality slow digesting micellar casein
  • Supports the growth and maintenance of muscle
  • Low in sugar and fat

Product Overview

Low sugar Low sugar
Low fat Low fat

Premium micellar casein protein powder

Optimum Nutrition’s premium high-quality micellar casein powder is packed with 24g of slow digesting protein per serving, specially designed to help grow and maintain muscle mass. Enjoy before bed to help reach your fitness goals or achieve the perfect body tone and shape. Gold Standard 100% Casein also has an added enzyme complex and comes in a range of tub sizes and flavours, depending on your needs.

High quality protein best consumed before bed

Micellar casein protein is the industry gold standard, slow-digesting protein that contains all nine essential amino acids. Casein works best during periods of long duration between protein intake, either before bed and during the day, when you may not eat for a prolonged period of time. To top it off, Optimum Nutrition Gold Standard 100% Casein is low in both sugar and fat.

Create your own tasty high-protein deserts

Gold Standard 100% Casein is available in a range of tub sizes depending on your needs. With a slightly thicker texture than whey protein, casein still tastes great and is the ideal protein to use in your own cooking - especially when making tasty, high-protein desserts!


  • Great taste and mixability

  • Added enzyme complex
  • Ideal for use between meals or before bed

Suggested Use

Mix one large scoop (32g) to 200-400ml of water or milk before bed. Or test your cooking skills and make some tasty high-protein pre-bed treats.

Nutritional Information

Nutritional information will be shown when a flavour and/or size is selected.

Customer Reviews

Overall Rating (4.7)
Write your review here. For complaints and questions we would like to refer you to our customer service.
Please enter a headline
Please enter a comment
Please enter a rating

goede smaak

Review by Rob de Wolff on Jan 3, 2024
Verified purchase
Dit product bevalt me uitstekend. Ik gebruik al jaren de vanille variant.
Translate review into English


Review by H P on Dec 29, 2023
Verified purchase
. Een product om echt aan te bevelen Lekker van smaak en onmisbaar in mijn dagelijks leven. 👍🏼 Aanrader 👍🏼👍🏼
Translate review into English

Fijne shake

Review by Peter Flierman on Sep 16, 2023
Verified purchase
Goede shake, structuur lekker dik. Goede smaak. Fijne shake voor het slapen gaan.
Translate review into English

Protéine à absorption lente : Gold standard 100% Caseine goût cookie and cream

Review by Julien on Sep 6, 2023
Verified purchase
Se mélange bien, un peu trop sucré et le goût est légèrement "chimique"
Translate review into English

Top eiwitten

Review by Klaas Van boven on Aug 17, 2023
Verified purchase
Super spul, doet wat het moet doen Prijs kwaliteit is super
Translate review into English


Review by Gast on Jul 4, 2023
Verified purchase
Beste merk op de markt naar mijn mening
Translate review into English


Review by Herman Wiersema on Jun 13, 2023
Verified purchase
Wat een fijn product. Lost goed op, uitstekende smaak. Geld waard.
Translate review into English


Review by khalil on Jun 5, 2023
Verified purchase
ON La qualité supérieure
Translate review into English

Goeie eiwitten

Review by Gideon Huijer on May 16, 2023
Verified purchase
Ik neem deze eiwitten na het sporten voor het slapen. Deze smaken goed en geven een verzadigd gevoel.
Translate review into English

Top smaak

Review by Carin on May 10, 2023
Verified purchase
Effect is nog niet merkbaar want ik gebruik het nog maar net, maar de smaak en substantie zijn erg goed. Enige nadeel is de enorme verpakking: Twee keer zo groot als de inhoud, niet bepaald duurzaam en ook zeker niet handig voor in de keukenkast!
Translate review into English


Stay up to date with recent news, advice and weekly offers