nzprotein hydrolysed whey isolate 1kg with green

NZ Hydrolysed Whey Isolate

The #1 Most Advanced Post Workout Shake.






Please note this product has a bitter taste due to hydroysis and is for the hardcore.
$60.00 (NZD)

Hydrolysed Whey

Hydrolysed Whey Protein Isolate (WPI) is the #1 most advanced post workout shake available today because the protein can be absorbed by the body nearly immediately and doesn't need digesting.

This product is a good type of protein for those who demand the absolute best and push themselves to the limit.

Hydrolysed WPI is been processed with enzymes to break down protein chains into smaller units which are "pre-digested", meaning that they bypass digestion and are absorbed by the blood stream very quickly.

It also renders the protein heat stable.

This product is not instantised with lecithin which gives maximum efficiency of absorption. Therefore, it mixes well but has slight frothiness (*unflavoured).

Due to the hydrolysis this product does not taste wonderful when unflavoured. Hydrolysis gives a bitter taste and it's for the hardcore. It could be mixed with our flavoured BCAAs or EAAs.

Hydrolysed Whey Isolate vs Whey


nz hydrolysed isolate small bag

nz whey small bag

Protein Per 100g



How it's Made

Made by refining whey to remove fat and lactose, and hydrolysis with enzymes to break down protein chains.

Made by ultra filtration at low temperature to preserve protein integrity.


>100 (highest)

>100 (highest)

Speed of Digestion


Virtually instant - hydrolysis causes the product to be "pre digested".

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Fast digesting.


Virtually lactose and fat free.

Lactose (naturally occurring milk sugars) and fat.



Bitter taste when unflavoured. This product is for the hardcore and those who demand the best.

Flavoured versions taste good.


Clean tasting with a naturally creamy texture. Very pleasant.


Not instantised.

Mixes fine in water, milk, or your favourite liquid.

Instantised (spray dried with lecithin to improve mixability).

Mixes easily in water, milk, or your favourite liquid without lumps. It can be mixed in a handshaker or with a spoon.


Best protein for immediately post workout.

Depending on your nutritional requirements take 1-3 servings daily at breakfast, between meals, post workout, or before bed.


Not sure which flavour protein shake is for you? Try our WPC samples here. Each sachet is one serving.

Not sure which flavour protein shake is for you? Try our WPC samples here. Each sachet is one serving.


Higher cost.

There are 32 servings per 1kg pouch, with a cost per serve under $2. Not bad considering it's probably the best protein in the world.

Lower cost than WPI.

There are 32 servings per 1kg pouch, with a cost per serve of just over $1.


The best post workout protein. Virtually free of fat and lactose, and heat stable. Not instantised with lecithin.

For those who demand the best.

NZ Whey Concentrate (WPC) is better tasting due to its naturally creamy texture.

This is our most popular option which is why it's available in more flavours.


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

Rated 4.13/5 Based on 15 customer reviews.

Place a Review on this product

Review by: Anonymous on Thu, Apr 14, 2022 1:26 PM
On e you get past the initial taste it's a really good tasting protein. Fast digesting perfect post workout
Review by: Jon on Tue, Mar 22, 2022 3:35 PM
Delicious. Like Dark chocolate and raspberry
Review by: Anonymous on Fri, Feb 11, 2022 1:59 PM
I thought after reading other reviews I would find this too bitter but I actually don’t mind it. The hydrolysed whey isolate is definitely much easier on the stomach than the whey isolate, worth the extra money in my opinion.
Review by: Aimee on Mon, Jan 17, 2022 10:12 PM
Seems good, very fine powder. Tastes bitter, just like Hydrolysed Whey Isolate is meant to.
Review by: Ben on Wed, Jan 12, 2022 4:07 PM
It's really nice taste of dark chocolate, specially when it's blend with peanut butter..
Good job team.
Review by: Largo on Mon, Dec 20, 2021 2:54 PM
Very good product but need to add some sort of sweetness to take bitterness out. Like artificial sweetness. NZPROTEIN REPLY: that doesn't work, we tried many things :)
Review by: Anonymous on Tue, Dec 14, 2021 7:11 PM
I’m sorry, this is the first product of yours that is not very nice at all. It tastes quite chemically and gave me the worst gas I’ve ever had. 😢😢
Review by: Mike on Mon, Dec 13, 2021 10:03 PM
I like the chocolate and raspberry, it's a bit sour but reminds me of a raspberry tart. Doesn't hurt my tummy.
Review by: Anonymous on Sat, Dec 4, 2021 9:14 AM
Sharp taste. Kinda got used to it in time. Good otherwise.
Review by: Anonymous on Tue, Nov 30, 2021 6:34 PM
I work a physically demanding job and found having a couple of servings of this a day helps me recover quicker.

You do have to get past the bitter taste to drink it.

Also if you mix too much it clumps. Less is more when making it. Also helps to let it sit for a couple of hours before consumption so the clumps break down.

I will be ordering this instead of the isolate going forward
Review by: Nigel on Thu, Nov 25, 2021 5:44 PM
I purchased one unflavoured and one chocolate and raspberry. I have found the unflavoured to be really strong but a bit better when I add in some watermelon BCAA. I like the chocolate and raspberry because it's a bit sour and tart'.

The powder is very fine and can be sticky if my hands aren't dry.

I usually use whey isolate but since purchasing these and using them during my workouts I have increased weights on everything. 5 stars on that alone. VERY happy.
Review by: Anonymous on Mon, Nov 22, 2021 1:13 PM
Protein itself mixes well and is easy to digest but the taste is really awful even the Choc Raspberry flavour.
Review by: Anonymous on Mon, Nov 22, 2021 8:27 AM
Bought the unflavoured and it tastes horrendous - very bitter (added into post work out oats with banana). Mixes in very easily. I thought I was ‘hardcore’ but this is too much for me!
Nb powder very fine so flies everywhere.
Review by: Rajan on Sat, Nov 20, 2021 10:03 AM
It's actually really really good! It's very easy to digest. I forgot to choose gifts 😭.
Review by: Jax on Thu, Nov 11, 2021 4:35 PM


Click on a flavour to see the nutritional information.


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

Name Ave Quantity Per Serving Ave Quantity Per 100g
Energy 494kJ 1581kJ
Calories 118 378
Protein 29g 93g
       - Gluten 0g 0g
Fat - total <0.1g 0.1g
       - Saturated <0.1g 0.1g
Carbohydrate 0.5g 1.8g
       - Sugars 0.5g 1.8g
Sodium 150mg 480mg

Ingredients: Hydrolysed Whey Protein Isolate (NZ).
Contains: milk.

Choc Raspberry

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

Name Ave Quantity Per Serving Ave Quantity Per 100g
Energy 483kJ 1544kJ
Calories 115 369
Protein 25.8g 82.4g
       - Gluten 0g 0g
Fat - total 0.7g 2.1g
       - Saturated 0.4g 1.3g
Carbohydrate 1.3g 4.1g
       - Sugars 0.5g 1.7g
Sodium 131mg 420mg

Ingredients: Hydrolysed Whey Protein Isolate, Cocoa, Flavours, Citric Acid, Sunflower Lecithin, Sweetener (Sucralose).
Contains milk.

Typical Amino Acid Profile

(mg per serving - unflavoured)

Branched chain aminio acids:
Isoleucine 1810
Leucine 2970
Valine 1600
Other essential aminio acids:
Lysine 2710
Methionine 620
Phenylalanine 810
Threonine 2150
Tryptophan 660
Non essential aminio acids:
Histidine 460
Alanine 1470
Arganine 540
Aspartic Acid 3200
Cysteine/Cystine 730
Glutamic Acid 5250
Glycine 460
Proline 1670
Serine 1410
Tyrosine 790