Gold Standard Casein Review
4.5Overall Score
Reader Rating: (1 Vote)

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Optimum Nutrition is known for its excellent protein powder supplements. Most people associate Optimum Nutrition with Gold Standard Whey Protein and Platinum Hydrowhey – but Optimum Nutrition makes a high quality Casein protein powder as well. Casein protein is a high quality slow digesting form of protein that is ideal for night time use. So how does Optimum Nutrition’s Casein Protein stack up against the competition? Let’s dive in and break it down.


Taste and Mixability:

The taste of Gold Standard Casein is very good. If you’re a chocolate fan (let’s face it – who isn’t?!) then we recommend sticking with the chocolate flavor. The Strawberry flavor is ok but has a bit of a “chalky” taste and texture to it.

As with many Casein protein powders – the mixability can often be an issue. The consistency is much thicker than regular whey protein shakes, so it’s always best to use plenty or milk or water. We recommend using a magic bullet or blender to make it that nice smooth consistency. If you don’t have a blender you can just use a standard shaker with a whisk ball but shake for a little longer!


Gold Standard Casein protein is priced competitively to the other high quality casein protein formulas. You will pay around $35.00 for a 2lb tub of Gold Standard Casein protein powder. This is similarly priced to the other top brands like Met-RX, Dymatize, and TwinLab.

Gold Standard Casein Protein powder costs around $1 per serving. If you are serious about your muscle building and recovery investing in a high quality casein protein is definitely worth the cost.

The best price we found for a 4 lb tub (55 servings) was $53.95 at



Gold Standard Casein protein powder delivers on its promise. It is a slow digesting anti-catabolic protein that will drip feed your muscles with quality protein and amino acids that will speed up your muscle growth and recovery process. Gold Standard also has BCAA’s, Glutamine and is low in fat and sugar. This formula has everything you could want in a slow digesting protein formula.


Side Effects:

If you have a lactose allergy you should make sure to consult your physician before taking casein protein powder. Casein protein powder can be hard on some people’s stomach’s who do not digest dairy easily. If you do not have any problems with dairy products Gold Standard Casein should have no side effects.

For For

  • Slow digesting high quality formula
  • Drip feeds your muscles with amino acids, Glutamine and BCAA’s
  • Great flavor (Especially Chocolate)
  • Low in sugar, fat and carbs 

Against Against

  • Can be more expensive than Whey Protein
  • Thick consistency, not the best mixability


Gold Standard Casein – Our Verdict:

Gold Standard Casein protein powder is a high quality supplement that will drip feed your muscles with anabolic fuel throughout the night. It is ideal to drink before bed as it contains very slow releasing protein, BCAA’s, and Glutamine to meet your muscle recovery needs. We recommend Gold Standard Casein to anyone who is looking for a high quality protein supplement for night time recovery.

Remember to look at today’s best deals for Gold Standard Casein before parting with any of your hard earned cash!

Per Serving (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

Other Ingredients: Micellar Casein (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).

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