The label looks different compared to the previous ones I got, is it still the same OPTIMUM NUTRITION product?

As you evolve, so do we. The part of our mission is to help active individuals better understand OPTIMUM NUTRITION products. Now choosing the right product for you is easier with more visible product benefits, features and flavours on each tub.

Has Gold Standard 100% Casein formula been improved?

Our latest formula is now fortified with zinc which contributes to a healthy immune system and magnesium to support normal protein synthesis.

The tub is not full to the brim when opened, why is that?

This is completely normal and is to do with the way the powder is vacuum packed into the tub. The powder settles over time. This does not impact the weight or number of servings listed on the label.

Are the ingredients tested and safe?

All of the ingredients in our products have been approved and considered safe for consumption by the European Food Safety Authority.

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Description

🌙 Fuel your gains while you sleep — the ultimate overnight muscle guardian!

SUSTAINED MUSCLE FUEL - 24g of premium micellar casein delivers a slow, steady amino acid flow overnight to maximize muscle repair while you rest.
IMMUNE METABOLIC BOOST - Fortified with zinc and magnesium, supporting your immune system and optimizing protein synthesis for peak performance.
CREAMY VANILLA INDULGENCE - Smooth, easy-to-mix formula that transforms your nightly protein ritual into a delicious, guilt-free treat.
TRUSTED GOLD STANDARD QUALITY - Backed by Optimum Nutrition’s legacy, 28 servings crafted in the UK to fit your active, health-conscious lifestyle.
ESSENTIAL AMINO ACID POWERHOUSE - Each serving packs 10g of naturally occurring essential amino acids, fueling recovery and growth with minimal sugar.

Optimum Nutrition Gold Standard 100% Casein is a slow-digesting protein powder designed for overnight muscle growth and repair. Each 924g tub provides 28 servings of 24g micellar casein protein enriched with zinc and magnesium to support immune health and protein synthesis. With 10g essential amino acids per serving and a creamy vanilla flavor, it’s the perfect protein source for fitness enthusiasts seeking sustained recovery and muscle maintenance during sleep.

Specifications

Product Name	Optimum Nutrition Casein Protein 908 Gram 28 Servings (Creamy Vanilla)
Allergen Information	Contains: Egg may contain, Gluten may contain, Milk, Soy may contain
Weight	924 g
Units	924.0 gram
Manufacturer contact	Glanbia Nutritionals UK Ltd: One Victoria Square Birmingham B1 1BD
Country of origin	United Kingdom
Brand	Optimum Nutrition
Format	Powder
Age Range Description	Adult
Serving Size	100 g
Energy (kJ)	1482.00 kJ
Energy (kcal)	354.20 kcal
Fat	1.8 g
of which:	-
- Saturates	1.2 g
Carbohydrate	11.0 g
of which:	-
- Sugars	4.2 g
Protein	73.0 g
Salt	1.4 g
Magnesium	283.0 milligrams (75.47% NRV)
Zinc	7.6 milligrams (76% NRV)

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.