Instant Whey™ PRO

From: £39.99

5.00 out of 5
  • Our market leading whey protein powder
  • For anyone aiming to build and maintain muscle mass
  • Proven 80% protein content
  • Free from added soy protein, sugars and palm oil
  • Amazing new flavours and milkshake texture

What is Instant Whey™ PRO?

Instant Whey™ PRO is our flagship high protein powder, and has been for close to two decades.

Instant Whey™ PRO delivers an exceptional source of protein to help aid your physical goals.

Reflex Nutrition’s Instant Whey™ PRO also now tastes just like a milkshake, and by using our new flavour technology, we’ve created what we think is our best tasting version yet. In fact, we’d argue that it’s the best whey blend product you can buy in the world. Our Instant Whey™ PRO also delivers more protein and additional ingredients, such as friendly bacteria and digestive enzymes, than nearly all our competitors.

Who is it for?

Instant Whey PRO is suitable for both men and women aiming to support their gym, sport or exercise activities.  In fact, anyone who undertakes regular strenuous physical activities can benefit from using Instant Whey™ PRO. 

Instant Whey™ Pro is a vegetarian product, however, it is not suitable for vegans or coeliacs.

What are the benefits?

  • Contributes to the maintenance of muscle mass
  • Contributes to the maintenance of normal bones
  • Proven 80% protein content

Protein intake is essential component for muscle growth, and amino acids are the building-blocks of muscle. There are 20 amino acids present in the body, an essential 9 of which, the body cannot create, so must come from the diet.

However, it can be difficult to obtain the correct amount of protein from food, which is where supplements come in. By using a protein supplement after a work-out, you can help to ensure that you support your recover in an optimal manner.

Recommended Usage

Consume 2-3 servings daily, ideally post-workout.

Mix 25g, which is approximately two level 25ml measures (there is a scoop included in the tub), with 175-225ml water or skimmed milk in a shaker or blender. These are, however, guidelines. More or less liquid can be added to taste.

Once mixed, consume immediately. For exact measurements, we advise using weighing scales, as the scoop measures in millilitres rather than grams.

How is it made?

The majority of the main ingredients in Instant Whey™ PRO are whey isolates, which are 90% protein and are created by separating components from milk. By using whey isolates, we are able to deliver what is widely regarded as the best quality available.

How does it taste?

Using the latest flavouring developments, our R&D team has created (in our opinion) the very best tasting Instant Whey in the UK. Effectively sweetened to both improve and balance flavour, Instant Whey ™ PRO mixes well with milk, or for those looking to reduce calorie intake, equally well with water.

Replicating milkshake in both texture and taste, Instant Whey ™ PRO can now be enjoyed in nine flavours:

Banana & Custard
Banoffee Pie
Choc-mint Perfection
Chocolate Perfection
Choc-peanut Butter
Cinnamon Vanilla Roll
Raspberry Delight
Strawberries & Cream
Vanilla Ice Cream

The science behind it

We would argue that Reflex Nutrition Instant Whey™ PRO is unbeaten in the market. But we don’t expect you to take our word for it, so we use the scientific facts to back up our claims!

The majority of the main ingredients in Instant Whey™ PRO are whey isolates which are 90% protein. Some brands include these but currently none use native whey isolate as a main ingredient: this is the ultimate A+ grade whey protein. Our Native Whey protein is obtained through a very specific process that differs from standard whey protein: the proteins are extracted directly from EU skimmed milk, using membrane technologies at a low temperature of just 10 degrees C. This state of the art low temperature process removes casein, fat and lactose to leave only the purest, most biologically active whey protein.

Reflex’s Instant Whey™ PRO also provides four types of friendly bacteria (Lactobacillus acidophilus, Bifidobacterium bifidum, Bacillus coagulans and Lactobacillus rhamnosus), providing a total of two billion gut-helping bacteria per 100g of product.

Anything else?

Available in three sizes: 900g, 2.2kg and 4.4kg.

Suitable for

  • Vegetarians: Yes
  • Vegans: No
  • Coeliacs: No

Instant Whey PRO (all flavours) has been certified as Halal safe by The Halal Trust.

For further allergy advice, please read our suitability guide.


Instant Whey™ PRO Blend (Undenatured Native Whey Protein isolate & Undenatured Cross-Flow Micro-Filtered Whey Protein isolate, Undenatured Ultra-Filtered Whey Protein concentrate), Muscle Drive™ [(Peptide-Bonded Glutamine (derived from wheat protein), Hydrolysed Whey Protein (30% degree of hydrolysis), L-Glutamine], Thickener (Undenatured Milk Protein, Carboxymethyl Cellulose, Potassium Cloride), Flavouring, Natural Colourings [fat-reduced cocoa powder (chocolate and banoffee varieties only), Betanin (strawberry and raspberry varieties only), Beta Carotene (banana, banoffee, cinnamon & vanilla varieties only)], Artificial Sweeteners (Acesulfame K, Sucralose), Digezyme® Enzyme Complex (Amylase, Protease, Cellulase, Lactase, Lipase), Emulsifier (Soya Lecithin), Probiotic Blend [Bacillus Coagulans (LactoSpore®), Bifidobacterium Bifidum, Lactobacillus Acidophilus, Lactobacillus Rhamnosus].

Nutritional Profile

Instant Whey PRO typical values - Reflex Nutrition

Product Label


8 reviews for Instant Whey™ PRO

  1. Rated 5 out of 5

    Joseph Patterson

    Great taste and mixes good too, I got some samples and would buy it for sure, recommend it to everyone.

  2. Rated 5 out of 5


    Tried just about nearly every protein powder on the market, all the usual USA stuff but I’m pleased to report that Instant Whey Pro beats them all for me. The only with 80% protein in chocolate flavour is the winner for me. Mixes well and tastes amazing. The quality and guarantee gives great piece of mind.

  3. Rated 5 out of 5

    Paul Clothier

    Tastes good and mixes well blah blah – but the main reason I use Reflex is because I trust the brand. With all the dodgyness about label claims I will only use a brand I know I can trust and that make their own products and not just some relabelled generic rubbish

  4. Rated 5 out of 5

    Lucy Woodward

    My favourite protein powder especially in strawberry flavour. Mixes easily and tastes amazing.

  5. Rated 5 out of 5

    Andrew Simonds

    Awesome product, tastes amazing mixes easily. 80% protein!! Really all what you could want, bit pricey but I guess you get what you pay for. Overall I think this is the best whey protein your money can buy, especially with the Native Whey Protein Isolate.

  6. Rated 5 out of 5


    I have just purchased a tub of strawberry and cream .just noticed nothing said on label about containing BCAAs.does it contain any or do i need to buy a supplemt also.

    • Nathan Chan

      Hi William,
      Whey protein already contains high concentrations of BCAA’s. Additional Bcaa supplementation might be considered, pre/intra/post workout if you feel you need. If you are having a particularly demanding session, a delay before you can take on board protein, or you simply want to ensure you have adequate BCAA’s, you might consider either BCAA in capsules or our Branched-chain amino acids and electrolyte blend both with a 2:1:1 ratio as used in studies and proven to be more effective.

  7. Rated 5 out of 5

    Elliott Cole (verified owner)

    Easily the best protein I’ve ever used and now the staple of my supplement intake.

    Tastes great, mixes great and above all else gives incredible results!

    Chocolate peanut butter is my flavour of choice although I also use vanilla for mixing into shakes and smoothies!

  8. Rated 5 out of 5


    The best thing about reflex is they don’t use artificial flavours on the protien , only natural and like that this is 1 of the reasons i trust reflex ….

Add a review