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Best clear whey protein powders 2024, tried and assessed by experts

From peach tea to orange and mango, drinks made with clear whey isolate taste just like juice

Alex Lee
Tech writer
Thursday 25 July 2024 07:07 EDT
This is your new post-workout drink
This is your new post-workout drink (The Independent )
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Say farewell to thick, gloopy protein shakes that are difficult to drink down. With the rise of clear whey protein powder, your drinks are about to get lighter and juicier. Unlike traditional protein powders, which have a thick, shake-like consistency, clear whey protein powder offers a more refreshing alternative. Drinks mixed with clear whey taste like juice or flavoured water, making it easy to drink while still providing the supplemental protein you need to reach your fitness goals.

According to Rob Hobson, a registered nutritionist and author of The Detox Kitchen Bible, brands achieve this light consistency by filtering out the fats and carbohydrates found in traditional whey protein powders. “The intensive filtration process involved in creating clear whey powders achieve much more purity than a regular whey powder as the parts of the protein that contribute to creaminess and thickness are removed,” explains Hobson. “The purity of this protein isolate means it is easily dissolved in water which is why it has been used to create fruit flavoured clear wheys, which are more refreshing and lighter than the creamier alternatives.”

Clear whey also often has more protein by weight (around 90-95 per cent), as opposed to whey protein concentrate, which has roughly 70 to 80 per cent protein by weight. Both forms of whey protein – concentrate and clear isolate – are rapidly absorbed and contain naturally-occurring branched-chain amino acids (BCAs) such as leucine, making them great for use in a post-workout drink. “Leucine activates the mTOR pathway which is a critical regulator of cell growth and muscle protein synthesis,” adds Hobson. “This amino acid is needed for the activation of muscle protein synthesis – the process that repairs and builds new muscle proteins – and is critical for muscle growth and repair after training.”

And because a lot of the lactose in clear whey isolate has been filtered out, it’s easier to digest for anyone who’s lactose intolerant. While both forms of whey protein are beneficial, it mostly comes down to your preference of taste and texture. “The difference is mostly superficial,” says Mary O’Leary, a senior lecturer at the BioActivEx research group at the University of Exeter. “There is no evidence that clear and ‘regular’ whey proteins are different in terms of their effectiveness.”

It’s also good to note that while protein powders can help you reach your goals, Hobson says that it’s still an ultra-processed food, while O’Leary adds that supplements aren’t necessarily needed. “For active people who want to build muscle mass or who are doing a lot of endurance training, a protein intake of roughly 1.5 grams per kilogram bodyweight per day is thought to be optimal,” O’Leary explains. “Whole foods can be more than enough to meet this target.”

But for those with busy lives or for those who struggle to meet their protein goals with whole foods, we’ve tried, tested and assessed the best clear whey protein powders to find the best, with the assistance of sports nutritionists and dieticians. 

How we tested the best clear whey protein powder

We’ve put these clear whey protein powders to the test
We’ve put these clear whey protein powders to the test (Alex Lee/The Independent)

Regular use of protein powder can take anywhere between six and 12 weeks to make a difference in muscle definition, growth and optimisation. We’ve consulted a number of dieticians, personal trainers and nutritionists to help analyse the ingredients, macronutrients and benefits of each protein powder. These include Scott Laidler, a personal trainer, and Rachel Clarkson, a registered dietician at the DNA Dietitian.

We paid particular attention to the flavour, ease of use, mixability, cost per serving and added nutritional benefits. Ultimately, did it taste good, mix well in the juice format and serve our muscle growth goals?

Each of the clear whey protein powder was made up as per the brand’s instructions with water (on multiple occasions) to see how easily it blended and how it affected taste. We used both a shaker bottle and a blender to see if either made a difference in lumpiness and foaminess. These are the clear whey protein powders that pack a punch. 

The best clear whey protein powders for 2024 are:  

  • Best overall – Protein Works clear whey diet protein: £23.49, Theproteinworks.com
  • Best budget buy – Sci-mx clear whey protein powder: £16.99, Sci-mx.co.uk
  • Best for taste Combat Fuel clear whey protein: £29.99, Combat-fuel.co.uk
  • Best for flavour variety – Myprotein clear whey protein: £23.75, Myprotein.com

Protein Works clear diet whey protein

protein works, clear whey protein powder
  • Best: Overall
  • Size: 500g (20 servings)
  • Type of protein: Whey protein isolate
  • Flavours available: 5, including orange and mango, watermelon breeze, mixed berry burst and sour cherry and apple
  • Protein per serving: 20g
  • Why we love it
    • Tasted delicious
    • Filled with added vitamins
    • High quality protein
  • Take note
    • Could mix better

For the best all-round clear whey protein powder, look no further than Protein Works’ formulation. So utterly refreshing after a sweaty workout, Protein Works’ clear whey was easy to drink, tasted good and had lots of added beneficial ingredients.

It’s filled with 100 per cent of your recommended intake of Vitamin B6 and B12, which can help fight fatigue and boost your immune system. “The added B vitamins are often neglected, without them one tends to lack energy,” adds Laidler.

It also contains ingredients that have been shown to promote weight loss, such as Acetyl L Carnitine and green tea extract. WHile they’re great all-round ingredients for your body, don’t get too caught up in the “diet” claims—it’s mostly marketing talk – you’ll want this mainly as a post-workout protein supplement, not something that will knock off the pounds.

And in terms of taste, this was absolutely delicious. One of the drinks that we kept coming back to over and over again. We’re particularly fond of the orange and mango flavour, which tasted, quite convincingly, like Rubicon mango juice. It does need to be shaken quite a bit if you don’t want lumps at the top of your drink – or worse – at the bottom, and blending delivers a lot of foam, but get past that and this is a total winner. Side note: High quality protein usually results in a lot of foam, so we didn’t mind too much.  

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Sci-Mx clear whey protein isolate

sci-mx, best clear whey protein powder
  • Best: Budget buy
  • Size : 400g
  • Type of protein : Clear whey isolate
  • Flavours available : 2, including apple and blackcurrant and tropical island punch
  • Protein per serving : 21g
  • Why we love it
    • Good amount of protein per serving
  • Take note
    • Not the tastiest
    • Could mix better

If you want to get the most protein for your buck, Sci-Mx’s clear whey isolate has you covered. Boasting the highest amount of protein per serving (a wholesome 21g), the brand’s clear whey beats the others we’ve tested for this round-up, and also contains 5g of BCAAs.

Unlike other protein powders, Sci-Mx puts maltodextrin in its blends, a carbohydrate that helps synthesise the protein in your body. “Another high-quality protein,” Laidler says. “The inclusion of maltodextrin could be considered a delivery system post-exercise, but not ideal at other times due to the high glycemic index, without fat content dampening it”..

While it had a good aomount of whey protein content, we found both the tropical punch and apple and blackcurrant flavours tasted a little bitter and quite artificial. It didn’t mix too well either, with lumps forming at the top after rigorous shaking. The artificial smell is quite strong which definitely impacted the taste. The scooper was also smaller than the other protein powders on this list. We preferred the blackcurrant flavour over the tropical one, but it wasn’t as refreshing as some of the others we’d tested.

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Combat Fuel clear whey protein

combat fuel, best clear whey protein powder
  • Best: For taste
  • Size : 490g (20 servings per tub)
  • Type of protein : Whey protein isolate
  • Flavours available: 9, including cloudy lemonade, strawberry and lime and blue razz
  • Protein per serving : 20.1g
  • Why we love it
    • Delicious taste
    • Mixes really well
    • Contains AstraGin
  • Take note
    • Quite sweet

If you’re looking for a protein powder that tastes as delicious as its nutritional content, we kept coming back to Combat Fuel’s unicorn piss. Yes, that’s really one of the flavours, and it was so, so tasty.

Founded by former British army veteran Alex Berezynskyj, Combat Fuel positions itself as a military and athlete-safe supplements brand, offering rigorous quality control, meaning what you get in the blend has been developed to a high standard. In fact, there are only five ingredients on the back of the tub, so it’s all pretty clean.

A single serving contains 20.1g of protein, and the blend features NuLiv Science’s patented all-natural plant-derived compound AstraGin. “It’s a beneficial addition, enhancing nutrient absorption and supporting gut health,” thinks Laidler.

Out of the protein powders we’ve tried, Combat Fuel’s was one of the best when it came to mixability, producing a smooth, light drink without any lumps – both with a shaker bottle and in a blender. We tried both the Irn Bru and unicorn piss flavours, and both were super refreshing. Dissolving really well, it wasn’t thick at all, and despite the provocative name, unicorn piss tasted a bit like drinking Skittles-flavoured water. Quite sweet, but so, so refreshing after a workout.

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Myprotein clear whey protein

Myprotein, best clear whey protein powder
  • Best: For flavour variety
  • Size: 488g (20 servings) or 854g (35 servings)
  • Type of protein : Clear whey isolate
  • Flavours available : 20. including peach tea, strawberry kiwi, vimto and more
  • Protein per serving : 20g
  • Why we love it
    • High quality protein
    • Loads of different flavours
    • Uses natural flavourings
  • Take note
    • Tastes a bit artificial

The brand who first popularised clear whey protein powder in the first place – Myprotein first launched its clear whey in 2019, and it’s just got bigger ever since. Boasting an enormous selection of 18 different flavours,

With 20g of whey protein per serving, it matches its competitors in terms of protein content, and has a relatively short and clean ingredients list. Unlike some of its competitors, it uses natural flavourings instead of artificial ones. “The use of natural flavouring suggests that it avoids synthetic flavouring agents, which is a plus for those seeking a more natural supplement,” adds Clarkson.

While that does mean that it didn’t taste as nice as some of the others we tried on this list, you know that there aren’t any artificial nasties (disregarding the sweeteners).

It does get lumpy at the top, despite some vigorous shaking. We eventually deferred to our blender to do the hard work, which got rid of all the lumps and gave us a nice smooth drink, though left us with a generous foam top. And despite having natural flavourings, all the three flavours we tried tasted quite artificial. Peach tea was our favourite, tasting fairly refreshing. “Overall, a generous serving of protein and negligible carb quantity would position this drink as compatible with a low-carb diet or lifestyle” says Laidler. “A very high-quality protein.”

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Warrior protein water

Warrior water, best clear whey protein powder
  • Best: Pre-mix clear protein water
  • Size: 500ml
  • Type of protein : Bovine collagen protein
  • Flavours available : 2, including berry and tropical
  • Protein per serving : 10Collagen2g
  • Why we love it
    • Easy to pick up and go
    • Tasted like a normal energy drink or juice
    • Dairy-free
  • Take note
    • Not made with whey, so doesn’t have all amino acids
    • Low amount ofprotein per serving

If you want something that you can grab and go that isn’t a pre-mixed protein shake off the shelf, then Warrior’s protein water might do the trick. It isn’t made with clear whey protein powder, however, but bovine collagen peptides.

Laidler explains that the protein inside Warrior’s protein water has been extracted and broken down – hydrolysed as we also see with whey – from cow bones, skin and connective tissues of cows. “The major difference here is that collagen does not contain the full spectrum of essential and non-essential amino acids,” he says. “Whereas whey does.”

You’ll also note that it has a generally lower protein amount compared to the others on this list – it contains just 10.2g of protein per serving. “However, the benefits of collagen peptides are going to extend out to other areas of health such as skin, joint, hair and nail health,” Laidler adds. And because it is dairy-free, Laidler says “this would also be the choice to make if you had an actual allergy or significant intolerance of lactose.” 

What we really liked about Warrior’s protien water was the sheer convenience of it. We didn’t have to mix it before or after a workout, we just picked it up and drank. It also tasted the most like a normal regular juice or energy drink – we tried both the berry and tropical flavours and they were both delicious.

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The verdict: Clear whey protein powder

Our favourite clear whey protein powder has to be Protein Works’ clear whey diet protein powder. Delicious, filled with added vitamins and not too expensive, this was the protein powder we kept coming back to. For overall taste, we loved Combat Fuel’s clear whey protein. While it was a little bit sweet, the oddly-named unicorn piss was absolutely delicious, and it mixed the best out of the ones we’ve tried.

Protein-wise, they’re all great, high-quality options. “All of these whey proteins contain an appropriate amount of protein in each serving (about 20g,” adds O’Leary. “From a protein intake standpoint, they should all do the job. Carbohydrate content varies a little between supplements, but all are relatively low in carbohydrates, with the highest carbohydrate supplement only having about 25 extra kcal per serving compared to the others.”

Don’t mind milky protein drinks? Check out our round-up of the best protein powders overall

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