22% off everything (orders $249+) / 20% off smaller orders (Stacks with Club Z) Coupon: TB-RACK
Amino Z Whey Protein Isolate WPI

By: Amino Z

Best Seller
Amino Z Whey Protein Isolate WPI Amino Z Whey Protein Isolate WPI
4.9 5 1 2359 43.15

Amino Z Whey Protein Isolate WPI

By: Amino Z

Best Seller
Special prices are auto-applied with a 20% discount. No further discounts apply.
Add a 5 litre recyclable storage jar for $4.95 [Info]

In-stock & Available Online (info)

142,260 customers love this item[Add to Favourites]
BUNDLE & SAVE $6
Amino Z ULTRA Shaker Bottle 700mL with Mixer

Add Amino Z ULTRA Shaker Bottle 700mL with Mixer & save $6 (normally $12.95). No further discounts apply.

Total: $69.14
Bundle Discount: -$6
Together: $63.14

Highlights
✓ Australian Made
✓ Australian Owned Brand
✓ 110% Guarantee (info)
✓ 87% less plastic in packaging (info)
✓ Naturally Sweetened
✓ Gluten Free
✓ Soy Free
✓ Vegetarian Friendly
✓ Free From Added Colours
Size Options

This product comes in a standard 1kg size. Other sizes are sent as multiple items. For example, 3kg will be sent as 3x 1kg items.

We do this to reduce manufacturing costs and pass those savings on to you. This also allows you to maintain product freshness in unopened items. Don't forget that you can also choose the Multiple Flavours option (above) in larger pack sizes while getting a much lower per-unit price!

Details

NO NONSENSE. JUST PROVEN INGREDIENTS.

Amino Z Whey Protein Isolate (WPI) is a high-quality whey product packed with a minimum of 26g of protein per serve. It contains no fillers, artificial sweeteners, or colours to ensure that you're getting exactly what you've paid for. Amino Z WPI combines a premium quality product with low cost. You aren't paying for expensive marketing, flashy branding or labels. You're paying for a high-quality Australian made product from a brand you can trust.

What you can expect from Amino Z Whey Protein Isolate

• Large selection of flavours
• 26g+ protein per serve
• Naturally sweetened
• Soy-free
• Low in carbohydrates and fat
• Support in muscle growth
• Support in muscle recovery
• Can support in strength and performance gains
• May assist in weight-loss goals

Formula Breakdown

• Whey protein isolate (sunflower lecithin)

Questions & Answers

Below we have answered some commonly asked questions about this product.

How is this whey protein isolate protein different to other whey proteins?

Whey protein can come in various forms, most commonly whey protein isolate (WPI) and whey protein concentrate (WPC). Whey protein isolate is a very high quality form of whey protein which undergoes additional processing relative to whey protein concentrate. This results in a higher protein percentage and a lower fat and carbohydrate percentage. WPI is a superior protein to be consuming post-workout to help facilitate recovery and muscle growth for this reason. It is also more expensive than its WPC counterpart.

Many whey proteins contain either WPC, or a blend between WPI and WPC. These other whey proteins are not of an equivalent quality. Simply look at the nutritional panel to see what type of whey protein(s) are used in the product.

What does the research show for whey protein supplementation?

1. A 2017 double-blind crossover study found that "whey protein supplementation enhances whole-body anabolism, and may improve acute recovery of exercise performance after a strenuous bout of resistance exercise." [1]

2. Whey protein has been found to assist in muscular recovery and performance improvements in resistance training individuals. [2]

[1] West DWD, Abou Sawan S, Mazzulla M, Williamson E, Moore DR. Whey Protein Supplementation Enhances Whole Body Protein Metabolism and Performance Recovery after Resistance Exercise: A Double-Blind Crossover Study. Nutrients. 2017 Jul 11;9(7):735. DOI: 10.3390/nu9070735. PMID: 28696380; PMCID: PMC5537849.

[2] Cintineo HP, Arent MA, Antonio J, Arent SM. Effects of Protein Supplementation on Performance and Recovery in Resistance and Endurance Training. Front Nutr. 2018 Sep 11;5:83. DOI: 10.3389/fnut.2018.00083. PMID: 30255023; PMCID: PMC6142015.

Does this product contain any artificial ingredients?

No, we have selected only naturally derived ingredients in this product. This includes natural flavours and sweeteners. We do not add any colouring into our WPI, so it is free from colour additives. (Please note that chocolate based flavours will appear brown from the cocoa added into the product).

Do I need to use exactly 250mL of water (or other liquid) with one serving size?

Although this is our recommended serving suggestion for optimal flavour and texture, this is certainly not necessary. If you prefer a thicker consistency and stronger flavour, you can reduce the liquid component. Alternatively if you prefer a weaker taste, you can increase the total amount of liquid. The 250mL of liquid is to be used as a guide.

Which allergens are produced within the Amino Z manufacturing facility?

Milk - From our whey-based ingredients such as whey protein isolate, concentrate or casein products.

Fish - From our marine collagen product.

Tree Nuts - From our almond protein. Traces of tree nuts may be present in our coconut flavour, as well.

Barley/Gluten - Amino Z is currently in the process of vigorous allergen testing for barley/gluten within the Aussie Choc Malt flavouring. With our consumer safety front of mind, we have decided to add barley as an allergen. We can confidently remove barley/gluten from this list when/if the laboratory experiments conclude that the product does not contain these allergens.

Peanuts - Traces of peanuts can be found in the Peanut Butter Cookie flavouring.

Amino Z conducts thorough, regular and systematic cleaning and anti-cross contamination measures to ensure your product is safe to consume.

What is the amino acid profile or content of WPI?

Below is the amino acid profile per 100g of protein (unflavored):

Alanine: 5500mg

Arginine: 2200mg

Aspartic Acid: 12100mg

Cysteine: 2400mg

Glutamic Acid: 19200mg

Glycine: 1700mg

Histidine: 1800mg

Isoleucine: 7300mg

Leucine: 11400mg

Lysine: 10800mg

Methionine: 2400mg

Phenylalanine: 3200mg

Proline: 6500mg

Serine: 5000mg

Threonine: 7700mg

Tryptophan: 2100mg

Tyrosine: 3000mg

Valine: 6400mg

Do you manufacture this product?

Yes we do. We have our own purpose-built manufacturing facility in Sydney, Australia.

Why is this product so much cheaper than similar products on the market?

Many other brands incur a high degree of costs associated with producing products. It is not uncommon for a product to be produced by a third-party manufacturer and then shipped (or imported) to a wholesaler. The wholesaler then sells to a retail store, who on-sells to the customer. The end result is that often four separate businesses are taking profits at each stage (the brand itself, the manufacturer, the wholesaler and the retailer).

We take a very different approach which allows us to keep our cost structure down and we pass those savings on to you, without sacrificing product quality.

We have our own purpose-built manufacturing plant located in Sydney Australia and we sell directly to you. This eliminates all additional parties from the process, thereby eliminating a lot of unnecessary costs.

The significant cost savings we incur allow us to invest into high quality ingredients while still offering a significantly cheaper final product.

I haven't tried this product before. What if I don't like it?

Because we manufacture this product ourselves, we believe that the onus is on us to produce a high quality product that you're going to love.

That's why we have our 110% Guarantee. Basically if you try it and you don't love it, just reach out to us. You can receive a 110% store credit, or a full refund.

Select flavour:
Per 33g ServePer 100g
Energy523.8 kJ1587.3 kJ
Energy (Calories)125.3 cal379.7 cal
Protein (g)26.5 g80.4 g
Total Fat (g)0.7 g2.1 g
Saturated Fat (g)0.5 g1.4 g
Trans Fat (g)0 g0 g
Total Carbohydrate (g)1.7 g5.2 g
Sugar (g)1.5 g4.5 g
Total Fibre (g)0.3 g1 g
Sodium (mg)64.9 mg196.6 mg
Caffeine (mg)0 mg0 mg

Ingredients
Whey Protein Isolate (Whey Protein Isolate, Sunflower Lecithin), Natural Chocolate Flavour, Natural Cocoa, Stevia

Directions
Mix 1 serve with 250mL of water and mix well with a shaker.

Contains
Milk

Lab Test Results

Product quality and transparency is at the heart of our values. Below you will find the independent third-party lab tests we have published relevant to this product.

Finished Product Lab Tests

Amino Z Whey Protein Isolate 1kg : Chocolate Coconut: Lab test date: 16/08/22
Amino Z Whey Protein Isolate 1kg : Strawberry: Lab test date: 16/07/22
Amino Z Whey Protein Isolate 1kg : Peanut Caramel Cookie: Lab test date: 20/05/22
Amino Z Whey Protein Isolate 1kg : Peanut Caramel Cookie: Lab test date: 20/05/22
Amino Z Whey Protein Isolate 1kg : Aussie Choc Malt: Lab test date: 14/03/22
Amino Z Whey Protein Isolate 1kg : Vanilla Creamy: Lab test date: 07/03/22
Amino Z Whey Protein Isolate 1kg : Chocolate Mint: Lab test date: 28/01/22
Amino Z Whey Protein Isolate 1kg : Mango Sorbet: Lab test date: 09/12/21
Amino Z Whey Protein Isolate 1kg : Vanilla Creamy: Lab test date: 22/11/21
Amino Z Whey Protein Isolate 1kg : Chocolate: Lab test date: 01/10/21
Amino Z Whey Protein Isolate 1kg : Unflavoured: Lab test date: 20/09/21
Amino Z Whey Protein Isolate 1kg : Chocolate Mint: Lab test date: 02/08/21
Amino Z Whey Protein Isolate 1kg : Iced Coffee: Lab test date: 07/07/21
Amino Z Whey Protein Isolate 1kg : Chocolate: Lab test date: 07/06/21
Amino Z Whey Protein Isolate 1kg : Vanilla Creamy: Lab test date: 07/06/21
Amino Z Whey Protein Isolate 1kg : Vanilla Creamy: Lab test date: 07/06/21
Amino Z Whey Protein Isolate 1kg : Chocolate: Lab test date: 02/06/21
Amino Z Whey Protein Isolate 1kg : Mango Sorbet: Lab test date: 25/05/21
Amino Z Whey Protein Isolate 1kg : Chocolate: Lab test date: 25/05/21
Amino Z Whey Protein Isolate 1kg : Vanilla Creamy: Lab test date: 26/03/21
Amino Z Whey Protein Isolate 1kg : Chocolate: Lab test date: 15/02/21
Amino Z Whey Protein Isolate 1kg : Vanilla Creamy: Lab test date: 23/11/20

Ingredient Lab Tests

Natural Chocolate Flavour: Lab test date: 28/12/21

Stevia: Lab test date: 18/05/21
Stevia: Lab test date: 09/11/20
Stevia: Lab test date: 06/09/20
Stevia: Lab test date: 03/09/20
Stevia: Lab test date: 12/01/20
Stevia: Lab test date: 12/08/19
Stevia: Lab test date: 08/05/18
Stevia: Lab test date: 28/03/17

Whey Protein Isolate (Whey Protein Isolate, Sunflower Lecithin): Lab test date: 05/07/21
Whey Protein Isolate (Whey Protein Isolate, Sunflower Lecithin): Lab test date: 29/06/21
Whey Protein Isolate (Whey Protein Isolate, Sunflower Lecithin): Lab test date: 02/03/21
Whey Protein Isolate (Whey Protein Isolate, Sunflower Lecithin): Lab test date: 25/02/21
Whey Protein Isolate (Whey Protein Isolate, Sunflower Lecithin): Lab test date: 15/12/20
Whey Protein Isolate (Whey Protein Isolate, Sunflower Lecithin): Lab test date: 29/10/20
Whey Protein Isolate (Whey Protein Isolate, Sunflower Lecithin): Lab test date: 13/10/20
Whey Protein Isolate (Whey Protein Isolate, Sunflower Lecithin): Lab test date: 06/09/20
Whey Protein Isolate (Whey Protein Isolate, Sunflower Lecithin): Lab test date: 03/08/20
Whey Protein Isolate (Whey Protein Isolate, Sunflower Lecithin): Lab test date: 27/11/19
Whey Protein Isolate (Whey Protein Isolate, Sunflower Lecithin): Lab test date: 03/10/19
Whey Protein Isolate (Whey Protein Isolate, Sunflower Lecithin): Lab test date: 23/09/19
Whey Protein Isolate (Whey Protein Isolate, Sunflower Lecithin): Lab test date: 05/09/19
Whey Protein Isolate (Whey Protein Isolate, Sunflower Lecithin): Lab test date: 30/08/19
Whey Protein Isolate (Whey Protein Isolate, Sunflower Lecithin): Lab test date: 31/07/19
Whey Protein Isolate (Whey Protein Isolate, Sunflower Lecithin): Lab test date: 25/01/18
Whey Protein Isolate (Whey Protein Isolate, Sunflower Lecithin): Lab test date: 13/08/17
Whey Protein Isolate (Whey Protein Isolate, Sunflower Lecithin): Lab test date: 13/10/16

Natural Cocoa: Lab test date: 28/09/20
Natural Cocoa: Lab test date: 11/09/20
Natural Cocoa: Lab test date: 04/08/20
Natural Cocoa: Lab test date: 08/07/19
Amino Z Supps Video Reviews
Amino Z Whey Protein Isolate WPI Reviews
Average Rating:  
4.9 from 2359 ratings
  • 5 Stars
     88%
  • 4 Stars
     9%
  • 3 Stars
     2%
  • 2 Stars
     1%
  • 1 Stars
     0%
AminoZ WPI chocolate flavour
By Anthony reviewed on 7/08/2022

Verified buyerA verified buyer is someone who has purchased this product from Amino Z

Thought I might sample this WPI. I’m not usually a fan of chocolate favoured protein powders, however this one, to my surprise and delight, was excellent. Smooth mix and the taste was very nice. Will seriously consider buying a larger supply when my current batch runs out. The price is also extremely competitive compared to other major brands. Overall, an excellent product.
Was this review helpful ? Yes / No
Great value for money
By Austin reviewed on 30/07/2022

Verified buyerA verified buyer is someone who has purchased this product from Amino Z

Have been really happy with the product so far. Great taste. quality protein, and the packaging is very handy and compact for storing. Would definitely recommend to anyone looking for this kind of thing.

Our reply:

Thanks for the review of our Whey Protein Isolate Austin.
I'm really glad that you're happy with the taste, quality, and also the packaging of our protein :)

Thanks for ordering and please feel free to reach out to us at any time.

Thanks again Austin! :)

Vanessa
Amino Z Team

Was this review helpful ? Yes / No
Wow Smooth Milk Chocolate really good
By Andrew reviewed on 22/07/2022

Verified buyerA verified buyer is someone who has purchased this product from Amino Z

I had tried the Amino Z Whey Protein Isolate WPI previously but was not a fan of the stevia aftertaste but this new formulation is awesome tastes amazing and it is as good as any of the expensive name brands. I can't wait to try the other flavors especially the Peanut Caramel Cookie.

Our reply:

That's really great to hear! Thank you so much for giving our Whey Protein another try Andrew :)

I'm glad you like it this time and we're really grateful for all the feedback we receive, positive or negative- it helps us in improving our range :)

Looking forward to assisting you again!

Thank you!
Vanessa
Amino Z Team

Was this review helpful ? Yes / No
Great product.
By Stathis reviewed on 4/07/2022

Verified buyerA verified buyer is someone who has purchased this product from Amino Z

The powder blends very well and taste delicious. The product is well priced with a big range of flavours. My favourite is choc orange.

Our reply:

Thanks for the review Stathis!

I'm happy to hear that you enjoy our Whey Protein Isolate WPI, especially the Choc Orange flavour :)

Please feel free to reach out if you have questions or if you need any assistance, we're happy to help!

Vanessa
Amino Z Team

Was this review helpful ? Yes / No
It was quite good
By Seungsu reviewed on 24/06/2022

Verified buyerA verified buyer is someone who has purchased this product from Amino Z

For the WPI, it is cheap and legit protein powder. The only problem was the discount code did not stack though. Anyway I recommend if anyone wants WPI.

Our reply:

Thank you for the review Seungsu and I'm really glad that you're happy with the quality of our Whey Protein Isolate powder :)

All Amino Z products and also our other in-house brands (Bandito Labs and DIYDS) are currently at special prices (automatically discounted by 20% off). They are also backed by our 110% Guarantee- if you didn't like the flavour/taste or if you're simply not happy with any of our products- just let us know and we can replace them, refund you 110% via Z points, or we can do a full refund too! We'll work really hard on keeping you happy. So if a problem arises, just contact us and we'll do our very best to fix it!

Thanks again for your support of the brand Seungsu and please feel free to reach out to us at any time.

Vanessa
Amino Z Team

Was this review helpful ? Yes / No
Loved it
By Jyothsna reviewed on 20/06/2022

Verified buyerA verified buyer is someone who has purchased this product from Amino Z

I bought creamy vanilla, iced coffee, Aussie choc malt, chocolate, smooth milk chocolate.

Loved the creamy vanilla and smooth milk chocolate.

Looking forward to try out other wonderful Protein powder options.

Our reply:

Thank you for the review Jyothsna. I'm really glad that you're happy with our Whey Protein Isolate powder especially the Creamy Vanilla and Smooth Milk Chocolate :)

Thank you for sharing your feedback and we're looking forward to assisting you again!

Vanessa
Amino Z Team

Was this review helpful ? Yes / No
My new favourite protein powder ????
By Tim reviewed on 18/06/2022

Verified buyerA verified buyer is someone who has purchased this product from Amino Z

I've had many types and brands of protein powders and this is up there as one of favourites. So far I've had Aussie chocolate malt,chocolate and smooth milk chocolate and I think they all have the best chocolate flavour I've ever had in a protein supplement and I've been consuming protein supps for over 20 years.

Best bang for you buck!

Our reply:

That's really great to hear Tim! Thank you for taking the time to share your review.

We're really so happy that you like our Whey Protein Isolate and that you're happy with our Chocolate flavours too :)

Thanks again for the support of the brand Tim and please feel free to reach out to us at any time.

Vanessa
Amino Z Team

Was this review helpful ? Yes / No
Amino Z Whey Greatness
By Jason reviewed on 13/06/2022

Verified buyerA verified buyer is someone who has purchased this product from Amino Z

Delicious tasting whey protein, mixed with milk would taste just as goodness with water, highly recommend.

Our reply:

Thank you so much for sharing your review of our Whey Protein Isolate Jason. I'm really glad that you're happy with the taste and goodness of the product!

Thank you for ordering and we're looking forward to assisting you again!

Thank you!
Vanessa (Amino Z Team)

Was this review helpful ? Yes / No
great taste
By Tristan reviewed on 13/06/2022

Verified buyerA verified buyer is someone who has purchased this product from Amino Z

no lie, the flavour makes me feel like in not drinking a protein powder, which is good because previous powders I've used can feel like a chore to drink

Our reply:

Glad to hear that Tristan. I'm happy that you enjoy drinking our Whey Protein Isolate and that you don't feel like drinking it only as a chore :)

Thank you for sharing your feedback and we're looking forward to being of service to you again!

Thank you!
Vanessa (Amino Z Team)

Was this review helpful ? Yes / No
Was pretty good
By Paul reviewed on 11/06/2022

Verified buyerA verified buyer is someone who has purchased this product from Amino Z

First time still early but it’s been good so far. Will have to give it. Bit longer but T this stage will purchase again

Our reply:

Thank you for the review Paul :)
Glad to hear that you're liking our Whey Protein Isolate powder so far.

I would just like to mention that all Amino Z branded supplements are back by our 110% Guarantee. If you didn't like the flavour/taste or if you're simply not happy with anything about the product- just let us know and we'll be happy to replace them, refund you 110% of the amount you paid via Z points so you can use it again on your next/future orders from us, or we can do a full refund too/etc. Basically, we'll work really hard on keeping you happy. So if a problem arises, just contact us and we'll do our very best to fix it!

Again thank you Paul and please feel free to reach out to us at any time. :)

Vanessa
Amino Z Team

Was this review helpful ? Yes / No

Loading more reviews...

Write Your Own Review

Review guidelines

Only registered users can write reviews. Please, log in or register

Our 110% Guarantee Promise

Our 110% guarantee is exactly that - if you're not completely happy with your product, let us know and we'll credit you back with 110% of the price that you paid for it (including any shipping cost incurred for the product).

This offer is valid on all Amino Z Supps and any other products marked with a "110% Guarantee" ribbon.

Even if you've opened it up! (How else will you know if you like it?)

Prefer a refund? No worries. If you're unhappy with your purchase, we'll refund you in full.

Valid within a month (30 days) of receiving your order. So we can continue to offer this to all customers, a "fair go" policy applies to prevent abuse and full details can be found in our Terms & Conditions section on this website.

100 Day Returns

100 Day Returns!

• Easy and hassle free
• You can return both opened and unopened product (see below for details)

For up to 100 days from the day that you place your order, you can take advantage of our returns, even if you just change your mind!

Please note, this policy does not relate to items that are damaged in transit, lost or incur an issue beyond your control. In situations like these, we will either refund, credit or send a replacement to you without delay. Our 100 day returns is for your peace of mind if you don't like the product, or simply change your mind.

For any unopened product, just ship the item back and we will refund or replace that item! You can obtain a refund, store credit or product exchange to the same value. Just let us know within 100 days from the date of your order.

For any opened product (Club Z members only), we understand that trying new supplements sometimes carries some uncertainty. Perhaps you’re not sure about a new flavour, or you just bought the wrong product. So if you're not happy with your purchase within 5 scoops (or 5 serves) and 30 days from the date of purchase, you can send it back for a full money-back guarantee! The purchase must have been made when you had an active Club Z membership.

Please note that if your item was purchased as an advertised discounted shortdated item, the above time frames are limited to 14 days. Shortdated items are heavily discounted items due to a sooner expiry date.

If however there was any issue in receiving your order (for example, if your order was lost or damaged in transit) - don't stress! Just contact us and we'll fix things up for you.

Simply contact us by email, phone, chat or visit us in-store to arrange a return. Our returns policy is subject to our standard terms and conditions.

Other Returns

Whenever a problem is incurred that is not your fault, we will be happy to arrange return shipping (if applicable) and the shipment of any replacement goods to you to avoid any further cost and inconvenience. All you need to do is contact us so we can jump on it as quickly as possible.

Here's what we will do in certain situations:

- Your item has been damaged/lost in transit (we'll replace it)
- Incorrect goods received (although rare, we'll ship off the correct item)
- A problem with the actual product or anything else (we'll do what is necessary to fix things for you!)

So we can fix things quickly for you, please let us know of any issues within 48 hours of receiving your goods. In certain situations we may ask for a photograph (for example if the product is damaged in transit, so we can take it up with the delivery company to avoid future issues).

If you do receive an incorrect product, please do not open the actual product so we can arrange a resolution quickly.

In a nutshell, we work really hard on keeping you happy. So if a problem arises, just contact us and we'll do our very best to fix it!

GIVE $10 GET $10More info