nzprotein micellar casein 1kg with green

NZ Micellar Casein 1kg

Slow Digesting Protein Source.




More due Monday/Tuesday
$38.00 (AUD)

Micellar casein protein is one of the many supplements we offer at NZProtein.

We have recently reformulated our product so now it tastes even better than before!

Micellar is the most popular form of casein and is known as a slow digesting protein.

Casein protein has a number of functions including recovery, muscle growth and improved health. Read below to learn more.

Casein vs Whey Protein

Milk contains two different proteins; whey and casein. The main difference between the two is the rate at which they are absorbed by the body.

Whey is digested relatively quickly whereas casein is a much slower digesting protein.

Both types of protein have their place in a healthy diet however it is ideal to consume them at different times.

woman holding NZProtein stainless steel shaker bottle

Benefits of Casein

Casein is a complete protein meaning it contains all of the essential amino acids your body requires.

The most important amino acid for stimulating new muscle growth is leucine.

Studies recommend 50mg of leucine per kilogram of bodyweight daily if your goal is to build muscle.

Our casein contains approximately 2400mg of leucine per serve meaning it is a suitable supplement for those looking to increase their muscle mass.

Additionally it contains only 114 calories per serve.

This makes it a great option for those who are trying to lose fat and retain muscle.

Casein also contains nutrients like peptides which support the immune system and have a range of positive effects on the human body.

Studies have shown casein can also help to reduce high blood pressure and even lower your triglyceride response after a meal.

For the majority of people, casein is an excellent supplement to improve muscle gains and help you maintain a healthy body fat.


Digestibility refers to the proportion of amino acids available in the bloodstream after consuming food.

Animal proteins, like casein, have a digestibility of around 90% whereas plant proteins are around 45-80%.

This means your body will easily absorb the protein and hardly any will go to waste.

Night Time Protein

As mentioned above, casein is often referred to as the ‘slow digesting protein’.

For this reason it is typically consumed before bed. The rationale is that doing so will reduce muscle breakdown while one is asleep.

When your body has a sustained supply of amino acids, the chances of muscle breakdown significantly diminish.

If you plan on going for a long period without food, a serving of casein protein would be a great option to have before doing beginning your fast.

moon at night time

Made in New Zealand

Like our other whey proteins, casein is made from New Zealand cow’s milk.

New Zealand dairy products are widely regarded as being high quality.

Our cows are pasture raised and grass fed. It is well established that grass fed cattle produce more nutritious milk compared to factory farmed.

Consuming New Zealand made protein not only supports the local economy but is also better for your health.

If you are interested in learning more about why New Zealand made protein is superior click here.

dairy cows on green pasture

Taste, Texture & Mixability

We stock gourmet vanilla, chocolate and unflavoured options of micellar casein.

According to our reviews they all mix well in either water or milk, taste great and can also be used in baking.

Blending 32g with water and ice is an easy to make a scrumptious milkshake.

If you get bored of drinking shakes, there are a range of exciting casein recipes to try. The unflavoured option is perfect to add to baking without affecting the flavour profile.

Alternatively you could stir the chocolate flavour into greek yoghurt and make a high protein chocolate pudding. The different uses for casein are endless.

woman with bag of protein powder

Side Effects

Unless you are vegan, dairy intolerant or need to eat a low protein diet due to kidney/liver conditions, there is no reason you can not consume casein.

Casein protein is safe for human consumption. Some individuals may be sensitive to lactose and experience some bloating however the majority of people will have no issues consuming 1-2 servings daily.

NZProtein sample sachet against brick


Casein protein is not only nutritious but very convenient.

At only $38 per kilogram, casein prevents deterioration of both muscle and your bank balance.

It is easy to use and makes for a delicious pre-bed snack.

If you currently struggle to meet optimal protein requirements or want to prevent muscle breakdown during a dieting phase then casein would be ideal for you.


Here are some of our favourite casein recipes. We are always updating this list so keep checking back for more in future!

Apple Pie Slice

An apple pie slice made using protein powder! Everyone will want a slice of this.
View Recipe

Chocolate Coconut protein Balls

This protein ball recipe uses coconut as the binding agent instead of nut butters or chia powder
View Recipe

Please note that this product is processed in a facility that also handles egg, soy, peanut, and gluten ingredients.

Rated 4.67/5 Based on 92 customer reviews.

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Product quality is good and delivery was fast enough. Good flavour. Mixes well. I will buy it again:)!
Review by: Anonymous on Wed, Oct 13, 2021 10:43 AM
I found this more watery and not quite as tasty as the Whey Protein. My husband found it better and more filling!!
Review by: Jen on Sun, Oct 10, 2021 8:44 AM
Not easy to find unflavoured protein, let alone casein. Very happy with this one, I've recommended to others and will buy again.
+ straightforward casein protein, no junk sweeteners added
+ very fast shipping
+ nice understated branding
- powder is a bit messy and dusts everything when I open/close the package
- bag coming apart
Review by: Jordan on Sun, Oct 3, 2021 11:40 AM
I blended it up and drank it straight away and was, frankly, concerned because it tasted very powdery. But I left it for sound 20 minutes and by then it had dissolved and tasted delicious and filling, leaving me with a nice, full feeling.

Review by: Thaddeus on Sat, Sep 11, 2021 7:41 AM
Great like all NZ protein products
Review by: Anonymous on Fri, Sep 3, 2021 12:05 PM
great products and prompt delivery. super reliable. repeat customer here.
Review by: Glen on Thu, Sep 2, 2021 11:41 AM
Tastes great
Review by: Ian on Wed, Sep 1, 2021 6:43 AM
Really like the taste and texture. Having every night at mo.
Review by: John on Thu, Aug 26, 2021 7:56 AM
Good vanilla taste. Slightly thinner or lighter than whey, but it improves mixing with milk if you like more creamy taste. It mix well in cold water/milk. I love it!
Review by: Yuko on Sun, Aug 15, 2021 1:01 PM
Good Taste and value for money. Ordered and received delivery next day. Thank you!
Review by: Chaylin on Wed, Aug 4, 2021 8:24 AM
good product and good price just not so tasty with water while on keto. off keto now and tastes good with milk.
Review by: glen on Thu, Jul 29, 2021 12:50 PM
I have been going through the vanilla casein 1kg /month as I use this everyday and in thickens things beautifully and is smooth and it
Review by: Georgina on Tue, Jul 6, 2021 9:18 PM
Easy to mix, tastes great makes a yummy iced coffee
Review by: Hanna on Tue, Jun 29, 2021 7:12 PM
The double chocolate one tastes great and mixes perfectly. Great source of protein.
Review by: Laurenz on Wed, Jun 9, 2021 2:32 PM
Just like choc mouse!!!
Review by: John on Thu, Jun 3, 2021 4:04 PM
Very good. I've started drinking my protein shakes 2:1 (casein:whey), naturally in milk the protein ratio of casein:whey is 4:1. Drinking whey by itself makes me feel sick from the rapid amino dump, casein slows digestion down and prevents the whey associated nausea. Casein seems difficult to find in NZ. Very happy with this one.
Review by: William on Fri, May 28, 2021 9:10 AM
quality product.
Review by: Anonymous on Mon, May 17, 2021 9:25 AM
Vanilla taste is subtle and not overly sweet. I have it with natural yoghurt, oats, fruit and sometimes cacao powder. It makes it almost a mousse type consistency. The powder is similar texture to custard powder. Keeps me way more satisfied than whey protein I had been using. It’s my new favourite. Will definitely repurchase 😊
Review by: Andrea on Thu, May 13, 2021 1:06 PM
Great product!
Review by: John on Fri, May 7, 2021 7:07 AM
Easy to mix, tastes amazing, nice suttle vanilla flavour, goes well with a coffee hit. Yummo
Review by: Hanna on Thu, Apr 22, 2021 9:33 PM
Taste is alot better then what I thought! Vanilla tastes good in both milk and water and chocolate just tastes good in milk
Review by: John on Mon, Apr 12, 2021 5:50 PM
Nice tasting, mixes well and stays fluffy
Review by: John on Thu, Apr 8, 2021 7:17 AM
NZProtein are always my go to, love the products and the price. Wish you’d offer larger discounts for over 10kg of protein purchases in 1 transaction. NZPROTEIN REPLY: email us!
Review by: CraigM on Tue, Feb 16, 2021 6:26 AM
Have been using the Casein protein for a long time. Is the most palatable Casein around. Service is always efficient with NZ Protein and ordering is really easily. Highly recommend!
Review by: Anonymous on Fri, Feb 12, 2021 8:32 PM
Nice thick heavy protein to keep you full longer, I'm not a fan of the texture, but the vanilla taste great, and i prefer my protein from grass fed which is why I shop at NZ protein! :)
Review by: Joseph on Fri, Feb 5, 2021 9:12 AM
Perfect for bedtime, mixes well, I like to add this to Anchor Protein Plus Milk and some ice.

Flavour and texture is as expected for this type of Protein.
Review by: Richard on Wed, Feb 3, 2021 9:26 PM
Good! I like that it has no flavour so I even use it in baking or my homemade nut bars. As shake, it dissolves nicely and is creamy. I added some milk drops to add the flavour I like.
Review by: Anonymous on Sat, Jan 30, 2021 10:12 AM
I use this both as a protein drink and mixed in with oats and it works well for both uses.
Only downside is a very mild flavour but this can be fixed by mixing with other things and not the end of the world.
Review by: Terri on Tue, Jan 5, 2021 12:28 PM
Great product. Mixes easy and tastes great.
Review by: Dean on Sun, Dec 20, 2020 11:49 PM
Taste is a bit light but mixes easy and has good value!
Review by: Anonymous on Thu, Dec 10, 2020 1:46 AM
The chocolate flavour tastes great, and goes down well. Will definitely be buying again.
Review by: Chris on Sat, Nov 14, 2020 12:02 PM
Super speedy delivery. Works great for keeping appetite at bay. Happy to be able to contribute to tree planting while taking this supplement.
Review by: Esther on Thu, Nov 5, 2020 3:34 PM
Good taste an mixes well with water
Review by: Matt on Thu, Nov 5, 2020 12:09 PM
I have been ordering Casein through NZ Protein for a while now, a fantastic product and consistently amazing service by the team. Delivery is normally the following business day and I'm in Christchurch. Although I enjoy this product, I am very excited for the arrival of their cleaner Casein. Can not recommend this product or the team more. 🙂
Review by: Victoria on Thu, Oct 29, 2020 7:11 AM
I love the casein best recommend to everyone. Awesome fast postage. I have also convince my colleagues to order your products thank you
Review by: Kala on Wed, Oct 28, 2020 5:05 AM
This is good. Solves easily in water and has a thick and creamy consistency. I mainly use it in my home made nut bars but tried in a cup of water. Thumbs up from me.
Review by: Anonymous on Sun, Oct 25, 2020 11:43 AM
This product is brilliant and great to support NZ made, my third time ordering. Helps keep my protein intake up while pregnant, no artificial additives or fillers. Easy to bake with and add to my children's porridge or smoothies. I also ordered early morning and it was here by 4pm! Keep up the great service NZ Protein.
Review by: Anonymous on Thu, Oct 22, 2020 5:56 AM
Best value for money protein and good tasting product. Ridiculously fast shipping.
Review by: Martin on Mon, Oct 19, 2020 6:10 AM
Good taste, but Double Chocolate is too sweet for my taste.
Review by: Lukas on Thu, Oct 15, 2020 10:30 PM
Very nice product
Review by: Anonymous on Mon, Oct 12, 2020 6:42 AM
Fine I think. Mixes well. Taste nice
Review by: Nicky on Mon, Sep 21, 2020 8:58 PM
Love love this product and great being able to purchase a big bag ☺️
Review by: Victoria on Mon, Sep 21, 2020 3:50 PM
When I opened the package I thought it didn't look like 1kg as the bag wasn't that full. I weighed it on some scales multiple times and it was only 700g when it was meant to be 1kg. Flavor is not bad but it does have a bit of a gritty texture especially when mixed in just the shaker. I recommend blending it up with some fruit for a smoothie where it isn't as gritty. NZPROTEIN REPLY: have tried to resolve this but contents of pack have been emptied into refillable tub.
Review by: Ronan on Mon, Sep 21, 2020 10:40 AM
I use this for post workout shakes and baking. It's SOOOOO much better than whey for cooking, as it makes things creamy rather than drying them out. Try 2 scoops in your postworkout pancake batter! It's the best muscle building protein that I know of.
Review by: Brad on Mon, Sep 14, 2020 8:41 AM
Good flavour, reasonable consistency for a protein powder, a little gritty but not awful. Creamy and tasty, easy to drink, and feeling full for many hours later.
Review by: Anonymous on Fri, Sep 11, 2020 12:59 PM
A quality protein at a reasonable price. I find my recovery and body composition have improved while using this product. However, it doesn't mix particularly well (possibly due to the nature of casein)
Review by: Anonymous on Tue, Sep 8, 2020 8:31 AM
Review by: Emanuele on Mon, Sep 7, 2020 9:48 AM
Love this protein powder! Easily mixes in with my morning protein shake. I've tried other brands that have ended up being lumpy when liquid is added, but I have no problem with this one. Unflavoured is truly neutral and doesn't leave any weird aftertaste. Protein shake does feel a bit powdery at the end but I think that is due to the fact that I make protein frappes. When I leave it to melt a bit it is good.
Review by: Payal on Thu, Sep 3, 2020 10:07 AM
Really pleased with it to help increase protein while pregnant.
Review by: Anonymous on Tue, Sep 1, 2020 7:18 AM
Good, clean, high-quality protein, as always, from NZ protein. Has a sound flavour profile, and minimal additional ingredients. Mixes well for casein, and is less-chalky than many.
Review by: Augustus on Wed, Aug 26, 2020 8:20 AM
Tastes great and mixes well. Great product.
Review by: Emanuel on Thu, Aug 20, 2020 12:46 PM
Love the natural casein. Easy to ensure I get my daily amount of protein in. Great to add to a glass of milk or some icecream for a good night's sleep.
Review by: Carol on Fri, Aug 7, 2020 6:31 PM
great stuff mixes well, really stoked
Review by: Hanna on Fri, Aug 7, 2020 9:32 AM
Good taste, dice recovery effect
Review by: Violet on Thu, Jul 30, 2020 7:21 AM
Great while on a diet and have the spare calories for something to fill you up at night time
Review by: Brendan on Sat, Jul 25, 2020 9:33 AM
Great to have a local made product. "Be local buy Local"
Review by: Anonymous on Wed, Jul 22, 2020 9:16 AM
feels good after having it for hours. need to have more of chocolate flavour added to it tho!
Review by: Anonymous on Wed, Jul 22, 2020 9:15 AM
Excellent product, excellent service.
Review by: Anonymous on Tue, Jul 21, 2020 9:13 AM
Second time purchasing this protien powder, this time I went for the Double Chocolate flavour and it's delicious. Super fast delivery also. Converted to a returning customer!
Review by: Rachel on Fri, Jul 3, 2020 8:50 PM
Mixes fine, really subtle flavour was hoping for a bit stronger but its fine :)
Review by: Darcie on Mon, Jun 29, 2020 5:53 PM
Mixes well, tastes great and the service from the team was tops, one of my bags was burst and they replaced it with no hassle at all. Thanks
Review by: Anonymous on Thu, Jun 18, 2020 3:40 PM
Great versatile protein powder to increase protein in baking but still keep food moist. Flavour is subtle and blends into ingredients. Recommend, especially if you want to manage a healthy appetite with a slow release fuel...always speedy delivery and great service.
Review by: Anonymous on Tue, Jun 16, 2020 9:07 AM
I LOVE this protein. Mixes so well and just fantastic to turn into a delicious custard dessert. Keeps me full and satisfied
Review by: Aimee on Mon, Jun 15, 2020 7:14 PM
Im a huge fan of your products, NZ based, good tasting and a very good price. Any chance of a Salted Caramel in the Casein range?
Review by: Nathan on Wed, Jun 3, 2020 5:59 AM
Wonderful service, product is amazing, totally recommended and definitely buying again.
Review by: Chirag on Mon, Jun 1, 2020 9:22 PM
Great product, quick delivery.
Review by: Danielle on Mon, May 11, 2020 4:42 PM
Great product, tastes good. Works awesome as night time protein specially on days i train super early, i don't feel starving on wake up and have energy to train.
Review by: Kasjan on Sun, May 3, 2020 12:19 PM
Great tasting. Good clean NZ protein. As natural as you’ll ever get!! Mixes well, doesn’t cause bloating. I buy all my products from NZ PROTEIN. So reasonably priced too!!
Review by: Sandy on Mon, Apr 20, 2020 10:47 AM
Not the worst casein but definitely pretty chalky texture and not enough chocolate flavour NZPROTEIN REPLY: this texture is the nature of casein. Flavour is always impacted by the texture of the base.
Review by: Sophie on Tue, Apr 14, 2020 12:58 PM
I was bummed when my last supplier of Casein stopped carrying it...but am bummed no longer, since I've found this great product. It's awesome to have unsweetened casein because it cooks brilliantly and can be mixed into virtually anything to increase protein content.

Besides the fine product, customer service is excellent. This was my first purchase here, but won't be my last. Thank you for providing access to such a nice line of products.
Review by: Anonymous on Mon, Feb 24, 2020 3:11 PM
Tastes alright and mixes well in a blender. Only downside is it has a very powdery consistency and coats my throat when I drink it which isn't pleasant.
Review by: Anonymous on Fri, Feb 7, 2020 11:28 AM
Good taste, mixes well. Great value
Review by: Alan on Mon, Feb 3, 2020 2:25 PM
Solid product with good taste. Would buy again.
Review by: Anonymous on Thu, Jan 23, 2020 5:25 PM
Really great stuff, love that there's a flavourless version so I can put it in any smoothie combo I like. Great creamy consistency and I feel warm and satiated for hours after. Great metabolic booster, would definitely recommend.
Review by: Anonymous on Fri, Jan 17, 2020 1:00 PM
Got Double Chocolate: Awesome Value, I don't like the taste but is drinkable and I will buy more when i need it, Would like more flavours to choose from. I think double chocolate should be renamed to just chocolate and a more chocolate flavour be double
Review by: Don on Mon, Nov 18, 2019 6:10 PM
Casein would have to be my favorite Protein Powder. The 2 favors i choose are very tasty and seem to work well for me. My question is will Casein be coming out in others Flavors?
Review by: Nathan on Mon, Oct 28, 2019 7:39 AM
Better use blender and i like to mix a tsp of dark cacao
Review by: Jacky on Tue, Oct 15, 2019 2:56 PM
Tasty :-)
Review by: Anonymous on Thu, Oct 10, 2019 8:24 AM
Good product, I blend it with just a small amount of milk and then leave it to set in the fridge so it?s like a mousse when I have it. Double chocolate is yummy
Review by: Beverley on Thu, Sep 5, 2019 7:21 PM
Definitely noticed a difference taking this before bed every night. Really good taste and mixed in water smoothly.
Review by: William on Thu, Aug 22, 2019 9:52 AM
Much better since the sugar content was reduced. It doesn't get any better than this.
Review by: DG on Sun, May 26, 2019 11:30 AM
The new improved formula has 2/3rds less sugar content to the previous formula. I buy the natural/unflavoured and mix it with a flavoured whey protein, which results in reducing the overall sweetness of the drink.
Review by: Anonymous on Sun, Apr 7, 2019 1:06 PM
Super fast delivery. Great quality and great tasting. Just don't expect it to be like whey in a shake! Casein is slow digesting, and behaves quite differently in water. Fun to cook and experiment with.
Review by: Anonymous on Thu, Oct 4, 2018 10:16 PM
Fantastic product. Great flavors. Mixes better than any other casein I've found. Delivery and service was top notch as always.
Review by: Anonymous on Wed, May 9, 2018 12:15 AM
This stuff is amazing. It tastes great and it's versatile. It mixes well with other protein shake ingredients and can be easily turned in to a great low carb desert by just mixing it with a small amount of unsweetened almond milk and clotted cream.
Review by: Ben on Fri, Feb 16, 2018 2:11 PM
Great product love the flavour super fast delivery and great service highly recommend
Review by: David on Sat, Sep 23, 2017 3:33 PM
Have loved everything I've bought from NZPROTEIN. The casein included! I'd also rather support a local company instead of all the other plastic crap imported into our country! Highly recommend!
Review by: Justin on Mon, Feb 15, 2016 5:45 PM
In terms of taste. Best tasting casein protein.mixes and tastes great.
Review by: Richard on Sun, Dec 13, 2015 12:01 PM
This stuff is dreadful. The consistency is powdery and it is unpleasant to drink.
Review by: Tim on Sun, Nov 29, 2015 9:09 PM
Fantastic product , great value , taste and mixes well. Service is always fast, the product is great and the prices are unbeatable!
Review by: Mac on Mon, Jun 22, 2015 8:51 PM
Great casein protein. Highly recommended.
Review by: Anonymous on Sun, Jan 11, 2015 9:33 PM
On my second bag now, cheapest casein shakes i've found, thanks nz protein.
Review by: Nick on Sat, Jan 3, 2015 8:49 PM


Click on a flavour to see the nutritional information.

Gourmet Vanilla

Serving size: 31.25g (2 heaped scoops)
Servings per pack: 32

Name Ave Quantity Per Serving Ave Quantity Per 100g
Energy 478kJ 1528kJ
Calories 114 365
Protein 25.1g 80.3g
Fat - total 0.5g 1.7g
       - Saturated 0.4g 1.3g
Carbohydrate - total 1.9g 6g
       - Sugars 1.9g 6g
Sodium 31mg 99mg

Ingredients: New Zealand Milk Protein Concentrate, flavour, sweetener (sucralose).
Contains: milk.

Double Chocolate

Serving size: 31.25g (2 heaped scoops)
Servings per pack: 32

Name Ave Quantity Per Serving Ave Quantity Per 100g
Energy 478kJ 1528kJ
Calories 114 365
Protein 24.3g 77.8g
Fat - total 0.8g 2.7g
       - Saturated 0.7g 2.1g
Carbohydrate - total 1.6g 5.1g
       - Sugars 1.6g 5.1g
Sodium 36mg 111mg

Ingredients: New Zealand Milk Protein Concentrate, cocoa (contains soy lecithin), flavours, sweetener (sucralose).
Contains: milk and soy (lecithin) ingredients.


Serving size: 31.25g (2 heaped scoops)
Servings per pack: 32

Name Ave Quantity Per Serving Ave Quantity Per 100g
Energy 475kJ 1520kJ
Calories 113 363
Protein 25.3g 81.1g
Fat - total 0.5g 1.5g
       - Saturated 0.3g 1.1g
Carbohydrate - total 1.6g 5g
       - Sugars 1.6g 5g
Sodium 31mg 100mg

Ingredients: New Zealand Milk Protein Concentrate.
Contains: milk.

Typical Amino Acid Profile

(mg per serving - generic NZ casein unflavoured)

Branched chain aminio acids:
Isoleucine 1340
Leucine 2430
Valine 1620
Other essential aminio acids:
Lysine 2120
Methionine 710
Phenylalanine 1240
Threonine 1140
Tryptophan 360
Non essential aminio acids:
Histidine 680
Alanine 840
Arganine 940
Aspartic Acid 1980
Cysteine/Cystine 300
Glutamic Acid 5470
Glycine 480
Proline 2480
Serine 1420
Tyrosine 1350