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USA Whey Protein Isolate

Our USA Whey Protein Isolate is our most economical WPI. It comes in natural flavour or in one of our organic flavours. It is available in 1kg bags to keep larger purchases fresh or you can save big with purchases of the original manufacturers 20kg WPI bags. Both size bags can be bought with our Bulk Buy Discounts. However, discounts only apply for the same flavour unless you buy our 4kg Multi Organic Flavour Pack.

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USA Whey Protein Isolate

Protein Powders

USA Whey Protein Isolate

5 out of 5 stars, 109 reviews

Our USA Whey Protein Isolate is made from fresh cheese whey by the USA's number one whey protein isolate manufacturer. Being undenatured it is high in whey protein micro fractions and is our most economical WPI.

Available in: Natural, Organic Cacao, Organic Vanilla, Organic Cinnamon, Organic Cacao Mint + 100g TRIAL PACKS.

N.B: Flavoured USA WPI is $8 per kg more than the natural flavour. 1kg Vanilla is $16 more per kg. Read why here

Bulk Buy Discounts

2x1kg for $33 each 3x1kg for $31 each
4x1kg for $30 each
5x1kg or more for $29 each
10x1kg or more for $27 each
15x1kg or more for $26 each

Now Available

4x1kg Multi Organic Flavour Pack from $160

4 Pack = 1kg Cacao + 1kg Vanilla + 1kg Cacao Mint + 1kg Cinnamon

Weight & Flavour
from $36.00

Serving Size: one scoop (30g)               Servings Per Package: 33

Our USA Whey Protein Isolate is completely undenatured and high in whey micro fractions, making it our most economical WPI. It is ideal for those wanting a great value post workout protein or for those wanting a high protein shake with almost zero carbs and fat.

Now available in organic  flavours and sweetened naturally with organic stevia extract and thaumatin. Professional Whey USA WPI guarantees you a high quality protein powder free from artificial flavours and sweeteners. More facts are:

  • Cross Flow Microfiltration naturally isolates undenatured protein due to its low temperature process.
  • 100% Undenatured Protein containing immune boosting whey microfractions such as 55.4% Beta-Lactoglobulin, 20.6% Glycomacropeptide, 20.5% Alpha-lactalbumin, 2% Immunoglobulin, 1% Bovine Serum Albumin and 0.5% Lactoferrin.
  • Free from acid processing.
  • Very High Level BCAA’s (Branch Chain Amino Acids) helping to increase protein synthesis.
  • Rapid Absorption of amino acids into the bloodstream.
  • Very High Protein at 91.6g per 100g on a dry matter basis (Natural Flavour).
  • Low Fat at 0.84g of fat per 100g (Natural Flavour).
  • Low Carb at 2g of carbs per 100g (Natural Flavour).
  • Instantised to easily mix in water and milk.
  • Non GMO, Kosher, Halal, Vegetarian Approved and Gluten Free.

Note: If you are looking for a more economical whey protein, take a look at our SELECT Whey Protein Concentrate, available in natural and organic flavours.

  • USA Whey Protein Isolate is 99.3% lactose free.
  • Aids growth and repair of muscle tissue.
  • Speeds up recovery.
  • Increases protein synthesis after exercise or resistance training.
  • Helps to boost the immune system.
  • Ideal for people following low-carbohydrate weight loss diet & the perfect protein for athletes.

Ingredients: Whey Protein Isolate, (NON GMO) Soy Lecithin 0.2%

Typical Nutritional Information Amino Acids per 100g of Protein
Natural Per 30g Per 100g
Energy (kJ) 466 1554
Calories 111 370
Protein (dry basis) 27.9g 91.6g
Protein (as is) 26.4g 88.0g
Fat 0.25g 0.84g
- saturated 0.09g 0.29g
Carbohydrates 0.6g 2.0g
- sugars 0.2g 0.7g
Sodium 60mg 200mg
Branch Chain Amino Acids Other Amino Acids
Isoleucine 6.8g Arginine 2.0g
Leucine 10.2g Cystine 2.4g
Valine 6.1g Glycine 1.9g
Other Essential Amino Acids Proline 6.4g
Lysine 8.9g Tyrosine 2.5g
Methionine 2.0g Aspartic Acid 11.5g
Phenylalanine 3.0g Serine 4.8g
Threonine 7.7g Glutamic Acid 15.7g
Tryptophan 0.9g Alanine 5.9g
    Histidine 1.2g

Allergens: Contains milk, dairy & soy products.

Customer reviews

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  • 5

    The only wpi I use

    Posted by on 05 Apr 2017

    Have been using this protein supplement strictly since 2013, i use 1 scoop 1 hour pre workout and 1 scoop post workout, this allows me to get that extra 50g or so of protein that i struggle to get in from food due to busy schedule. Favorite Protein on the market can add any flavourings to it sometimes just blend it in with some fruits or mix some organic honey with it.

  • 5

    Best quality/price WPI

    Posted by on 06 Mar 2017

    Have been using this product for several years to great effect. I love to mix 40g into a bowl of Chobani yogurt and consume just before bed for a great protein boost. Don't bother with the flavourings - go natural!

  • 5

    Proven winner

    Posted by on 08 Dec 2016

    This is my preferred protein supplement for my competition level olympic lifting training. Reliable, lean, easily dissolved in milk or water, I drink 4-6 scoops a day to supplement a meat, greens and water diet.

  • 5

    Great product

    Posted by on 08 Dec 2016

    Very smooth and easily added to a variety of drinks or cooking. This is a good value option. First time user, I'm ordering again

  • 5

    Only the best

    Posted by on 13 Sep 2016

    Ive been exclusively using Professional Whey for more than 3 years and keep coming back because of the excellent quality and reasonable pricing. Can recommend to ANYONE who is looking for a high quality whey protein minus all the bogus BS that some other manufacturers add to theor protein.

  • 5

    Repeat purchase

    Posted by on 07 Sep 2016

    Product is excellent. Unflavoured is easy to mix and drink.

    Shipping is crazy fast.

    Best price and service around, repeat purchases are a no-brainer.

  • 5

    Best bang for buck

    Posted by on 17 Jul 2016

    I've used several flavours of this great protein. Quality product at a fantastic price especially when compared to local in store buys! Overnight delivery at a fixed price is just a bonus!

  • 5

    Kanga Juice (Cacao)

    Posted by on 17 Jun 2016

    If you asked me 6 months ago would I fight a kangaroo in a fist fight, I would of quickly responsed with a "NO" and gone down the crevasse of my bed and gone to my happy place, with my fiancee following that up with a bathing in lemongrass essential oils and warm water.

    Once I discovered USA Whey my whole life changed. I now sleep on a bed of nails, I fight kangaroos for a living and have the most unbelievable sex life. Thank you professional whey you saved me externally and internally

  • 5

    Why would you want to buy an overpriced commercial protein?

    Posted by on 07 Jun 2016

    Why would you want to go and buy a "branded" protein powder that is oozing fillers and fake chemicals. This protein powder is amazing. All natural, good quality and well priced. You can't get much better than this.

  • 5

    Wish I found this sooner!

    Posted by on 06 Jun 2016

    Just switched over from vanilla to cinnamon after reading a review below and i cant believe that there isn't any artificial crap in this! Whenever I have a sugar craving I drink one of these and I'm good.

  • 5

    Love it, love it.

    Posted by on 19 May 2016

    The USA WPI has been a staple 3 or 4 years now. I love that it is all natural and contains no artificial sweeteners. Recently, I have combined the unflavoured WPI with Professional Whey Organic Cinnamon for extra flavour, along with PW Dextrose post-workout. This product is a must-try if you want a high-quality, pure protein.

  • 5

    Go to protein

    Posted by on 16 May 2016

    Started using this 2 months ago. Very easy to mix and have not noticed any taste or texture issues with shakes .
    Using it inline with carb backload diet and finding better recovery from sessions and the numbers are all goin north in the weight room while bodycomp improving. My go to protein from now on

    Show more reviews

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