Optimum Nutrition Gold Standard 100% Micellar Casein Protein Powder

Optimum Nutrition Gold Standard 100% Micellar Casein Protein Powder is one of the most popular casein protein supplements in powdered form.

ON Casein comes in various packages and in many flavors and is suitable for everyday snacks, slow-digesting meals, bedtime shakes, but also for increasing protein content in other meals as well.

Published: November 26, 2020.

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Optimum Nutrition Gold Standard 100% Micellar Casein comes in packages of various sizes, most commonly 2 lbs and 4 lbs (~0.9 and 1.8 kg), featuring several flavors. The nutritional content of the flavors slightly little bit and is given in the following comparison chart:

Flavor Serving Size Amounts in grams per single serving of powder
Protein Carbs Fats Fibers
Chocolate Peanut Butter 1 Scoop (34g) 24 4 1 1
Chocolate Supreme 1 Scoop (34g) 24 4 1 1
Cookies & Cream 1 Scoop (33g) 24 3 1 -
Creamy Vanilla 1 Scoop (33g) 24 3 0.5 <1
Strawberry 1 Scoop (32.5g) 24 4 0.5 -

Note: there are other flavors as well, but these are the most popular ones. Also, not all the flavors are available all the time.

The only protein source in the Optimum Nutrition Gold Standard 100% Micellar Casein Protein is micellar casein, hence the '100%' in the label.

As such, ON Casein is an excellent, low-carb, and low-fat protein source that can be used for making daily protein shakes, bedtime protein shakes, increasing the protein content in various meals, etc.

In shakes and smoothies, ON Casein can be mixed with the plain water - powder is instantized using lecithin and mixes almost instantly with very little foam.

Also, it can be mixed with fruits, low-fat or cottage cheese, nuts, oats, and similar.

For people being on the low-carb or even Keto diet, ON Casein can be an excellent source of protein, but also it can help fight cravings for sweets and carbs in general - yes, it has that good taste, just find the flavor that fits Your needs and wishes.

Note: ON Casein is excellent, but don't base Your nutrition on the supplements - they are great, but the real food is real food :)

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My favorite flavor is Chocolate Supreme and I consume it mostly mixed with oats, usually an ounce (~30g) of milled oats mixed with a scoop of ON Casein protein powder - it can keep me satiated (100kg+ guy) for 2-3 hours, not more.


on casein 3 h250pxLong Story Short: ON Casein is one of the most popular casein protein supplements on the market for years - it has excellent nutritional content, tasty flavors, mixes instantly with water or milk, it digests easily (no stomach issues) and it comes at an acceptable price.

If You are looking for a pure casein protein powder, consider this supplement.

For more reviews and recommendations, feel free to check Optimum Nutrition Gold Standard 100% Micellar Casein Protein Powder Amazon link (link opens in the new windows).