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 overnight with Gold Standard Casein — because your muscles don’t rest, and neither should your nutrition.

OVERNIGHT MUSCLE FUEL - Sustained 24g micellar casein delivers a steady amino acid flow while you sleep, maximizing recovery and growth.
LOW SUGAR HIGH IMPACT - Enjoy a clean, smooth shake with minimal sugar—perfect for health-conscious professionals balancing fitness and busy lives.
VERSATILE CONVENIENT - Ready to mix with water or your favorite beverage anytime—ideal for pre-bedtime, between meals, or post-workout nutrition.
IMMUNE METABOLIC BOOST - Fortified with zinc and magnesium to keep your immune system strong and protein synthesis optimized.
ESSENTIAL AMINO ACID POWERHOUSE - Packed with 10g of naturally occurring EAAs to support muscle repair and performance around the clock.

Optimum Nutrition Gold Standard Casein is a premium slow-digesting protein powder delivering 24g of micellar casein per serving, enriched with zinc and magnesium to support immune health and protein synthesis. With 10g of essential amino acids and low sugar content, it provides a steady overnight release of nutrients to aid muscle repair and growth. Perfect for fitness enthusiasts seeking sustained muscle support, this smooth, easy-to-mix powder is ideal before bed or between meals.

Specifications

Product Name	Optimum Nutrition Casein Protein 908 Gram 27 Servings (Chocolate Supreme)
Allergen Information	Contains: Egg may contain, Gluten may contain, Milk, Peanuts may contain, Soy may contain
Weight	848 g
Units	924.0 gram
Use By Recommendation	Great before or after exercise, between meals, with a meal, or any time of day where you need extra protein in your nutrition
Serving Recommendation	1 Heaping Scoop
Manufacturer contact	4 Waterside, Dublin 24, Ireland
Brand	Optimum Nutrition
Format	Powder
Age Range Description	Adult
Country of origin	United Kingdom
Serving Size	100 g, 100 g, 33 g, 33 g, 33 g
Energy (kJ)	1463.00 kJ
Energy (kcal)	349.66 kcal
Fat	2.5000 g
Carbohydrate	5.8000 g
Fibre	3.5000 g
Protein	74.0000 g
Salt	1.9000 g

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.