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  • Slow-Digesting Protein for Overnight Muscle Recovery
  • 24 Grams of Protein per serving to Help Build and Maintain Muscle³
  • Nearly 5 Grams of Naturally Occurring BCAAs per Serving to Support Endurance and Recovery
  • Ideal for Use Between Meals and Before Bed
From $41.99 .

Product Overview

Slow-Digesting Protein for Overnight Muscle Recovery

Casein, a slower digesting and absorbing protein can be used after exercise, between meals or before bed to help support satiety and muscle recovery. GOLD STANDARD 100% CASEIN™ delivers BCAAs to recovering muscles for several hours. By using only premium micellar casein as a protein source, we’ve created a protein powder that sets the GOLD STANDARD® for slow digesting protein support.


  • 24 Grams of Protein per Serving to Help Build and Maintain Muscle³
  • Nearly 5 Grams of Naturally Occurring BCAAs per Serving to Support Endurance and Recovery
  • Ideal for Use Between Meals and Before Bed
  • 40% of the Daily Value for Calcium per Serving
  • 110-120 Calories per Serving
  • 0.5-1 Gram of Fat per Serving
  • 1 Gram of Sugar per Serving

Suggested Use

Mix a scoop of the powder into 8 to 14 fluid ounces of cold water or milk using a shaker cup. For best results, mix up your shake 30 to 60 minutes after your workout, before bed, or use as an anytime snack.
For healthy adults, consume enough protein to meet your daily protein requirements with a combination of high protein foods and protein supplements throughout the day as part of a balanced diet and exercise program.

Nutritional Information

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

Customer Reviews

Overall Rating (4.8)
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Super tasty

Review by Phil on Sep 5, 2021
Tastiest protein I have tried, has really helped to ensure my body fully recovers between workouts. Means I can push stronger for longer!

Love this product!

Review by Rebecca Atkin on Sep 4, 2021
Works great! It has made all the difference in our workouts!

Too dense and doesnt mix well

Review by Manish on Aug 27, 2021
Does not mix nicely at all. I use a spoon to mix it with a glass of water. Of all the ON, product i have tries this one is the most difficult for me to swallow and mix.


Review by Marcelo on Aug 26, 2021
Good flavour and excellent quality. I totally recommend!

Will buy again

Review by Anonymous on Aug 24, 2021
I got the Cookies and Cream flavour. Tastes good and mixes well, forming a rich shake without being too gloopy or chalky. I'd recommend adding a fair amount of water to make sure you get a consistency that works for you, probably 300+ml; casein likes to form a gel when suspended in liquid (good micellar casein is supposed to do this). Also quite filling!

Excellent taste and consistency

Review by Fawad Karim on Jul 31, 2021
I use ON Casein daily as directed. Great texture and always dissolves completely in about 250ml of water. I really like the taste and its properties of slow release of protein overnight. Great for me as an endurance runner who just can’t get enough protein during the day from meals and whey protein supplements.

Fantastic overnight Protein

Review by Gary Gorman on Jul 29, 2021
I use this product every night to get that constant feed of slow release protein. Absolute game changer and tastes amazing

A bit sweet for my tastes, but otherwise excellent

Review by Anonymous on Jul 20, 2021
I found the "Creamy Vanilla" flavor to be a bit more "white sheet cake" flavored than a true vanilla, and quite a bit sweeter than I would have liked. But otherwise it performs as exactly promised: Mixes quickly and thoroughly, creates a nice rich shake without being chalky, grainy, or unctuous, and the casein keeps you satiated for a decent amount of time. I like to blend mine with frozen fruit or berries for a nice summer smoothie, which is why the vaguely cheap-grocery-store-cake flavor overtones were somewhat disappointing. It's not horrible, especially considering some of the other shake brands I've tried. But as someone who is perpetually on the hunt for a minimally-sweet and more real vanilla tasting protein smoothie base, I likely won't buy this particular flavor again, and I really wish they offered an unflavored option in the casein version.

Great quality Casein

Review by Sukh on Jul 17, 2021
Mixes into a very smooth shake, never had any lumps, tastes great and digests well too!

Great Quality

Review by Raelynn Canell on Jun 23, 2021
Mixes well, tastes good, much better quality than other products I’ve used!!!!

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