Protein powder was once associated mainly with bodybuilders and athletes, but it's now a mainstream supplement used by people with a wide range of health and fitness goals. As a fitness expert, I've seen first-hand how useful it can be for supporting recovery after exercise, supporting muscle mass maintenance and making it easier to meet daily protein needs when life gets busy. But what does protein powder do, exactly? Its primary role is to provide a convenient source of protein that can help support muscle repair, recovery and growth.
It's also become increasingly popular among women, particularly those over 40. As we age, maintaining muscle becomes more important for strength, mobility and long-term health, and increasing protein intake is one way many people support this. Whether your goal is muscle gain, weight management or simply meeting your daily protein needs, there's now a wider choice of products than ever before.
What is the best protein powder?
The market has expanded far beyond traditional whey protein powder, with options ranging from vegan protein and plant-based protein powders to clear and organic protein powders and specialist blends tailored to different lifestyles and dietary requirements. To help you find the best protein powder for your needs, we tested a wide range of products available in the UK from leading brands, including MyProtein, Bulk, Protein Works, ESN, Free Soul, and Innermost.
After comparing products across whey, clear whey, plant-based and specialist formulations, Hermosa grass-fed whey protein powder emerged as our top overall recommendation thanks to its ingredient quality, flavour and everyday versatility.
Whether you're after a whey-based formula, plant-based alternative or more specialist option, our expert picks cater to a variety of needs and preferences. We focussed on reputable brands that meet the UK standards for supplements. For more options, don’t miss our guides to the best protein bars, vegan protein powders, best creatine and best pre-workout supplements.
For more buyers' guides, visit our product review section to find more health-related reviews, including best kombucha, best collagen powders and meal prep containers. Read on for our pick of the best protein powders to buy in 2026.
View Affiliate Playlist on the source websiteBest protein powders at a glance
- Best protein powder: Hermosa grass-fed whey protein powder, £67 for 1kg
- Best clear protein powder: ESN Isoclear whey protein isolate, £50.99 for 908g
- Best organic protein powder: The Organic Protein Co organic whey protein, banana and lucama flavour, £27.99 for 600g
- Best tasting protein powder: More Clear whey protein mango, £42.99 for 600g
- Best beef protein powder: Ancient + Brave Ancestral Protein, £52 for 600g
- Best low-calorie protein powder: Bulk pure whey isolate, £39.99 for 300g
- Best whey protein powder: MyProtein Impact chocolate brownie whey protein, £16.99 for 450g
- Best protein powder for women: Free Soul vegan protein blend chocolate flavour, £22 for 600g
- Best casein protein powder: More Protein iced matcha latte, £37.99 for 500g
- Best vanilla protein powder: Protein Works vanilla crème diet whey isolate 90, £22.49 for 500g
- Best mass gainer protein powder: Maxi Nutrition Cyclone Strength banoffee flavour, £49.99 for 1260g
- Best protein powder for muscle gain: Innermost The Strong Protein smooth chocolate flavour, £33 for 520g
Jump to section:
- Best protein powders to buy in 2026
- How to use protein powders safely
- Who could benefit from using a protein supplement?
- Who shouldn't take protein supplements?
- Is it possible to take too much protein?
- How to choose a protein powder
- What is protein powder made of?
How we tested protein powders
Each protein powder was prepared following pack instructions using cold water and mixed with a small electric milk frother for consistency. We consulted nutritionist Kerry Torrens and tasted every product ourselves, assessing flavour, texture, mixability and overall drinking experience. The aim was to understand how these supplements perform during everyday use, whether you're looking for a whey-based option after training, vegan alternative for smoothies or low-calorie way to increase your protein intake.
To reflect the breadth of products available in the UK, we tested a range of formulations, including whey isolate, clear, plant-based and organic blends, alongside products aimed at women, muscle gain, weight management and recovery. We also considered options that stand out for flavour, nutritional profile and overall value.
The type and source of protein were also taken into account, with ingredients such as pea, hemp, collagen, casein and beef noted where relevant. Dietary suitability was another key factor, including vegan, gluten-free, lactose-free and unflavoured options. We also assessed how well each product aligned with different goals, from maintaining muscle and supporting recovery to weight management and increasing calorie intake.
We assessed the following key areas:
- Taste and texture: was the flavour enjoyable and balanced, or overly sweet and artificial? We compared everything from classic vanilla protein powder, vanilla whey protein powder and chocolate protein powder flavours to fruit-inspired clear protein drinks, assessing whether powders blended smoothly, without a gritty or chalky finish.
- Type of protein: we noted whether each product was whey-based, plant-based, collagen-based, casein-based or derived from ingredients such as pea, hemp or beef. We also recorded whether the protein was supplied as a concentrate, isolate or hydrolysed form, as this can influence protein content and digestibility.
- Nutrient profile: protein content per serving was compared alongside calories, fat, carbohydrate and sugar levels. This allowed us to identify products suited to a variety of goals, including muscle gain, recovery, weight management and healthy ageing.
- Sweeteners: we recorded whether products contained sugar, stevia or artificial sweeteners, as these can have a significant impact on flavour and overall drinking experience.
- Dietary suitability: vegan, vegetarian and gluten- and lactose-free claims were verified to help identify products suitable for different dietary requirements.
- Value for money: cost per serving was weighed against ingredient quality, protein content and pack size to assess overall value and support an informed protein powder comparison.
- Labelling and transparency: we checked ingredient lists, nutritional information and any available third-party testing or quality assurances. We also considered how well brands addressed common consumer questions, including 'is protein powder good for you?' and 'does protein powder expire?', through their labelling, websites and supporting information.
Best protein powders to buy in 2026
Hermosa grass-fed whey protein powder
Available from Hermosa (£67)
Best protein powder
Star rating: 5/5
- Grams of protein per serving: 21 per 30g serving
- Calories per serving: 131 kcals
- Type of protein: grass-fed whey protein
- Fat per serving: 2.6g
- Carbohydrates per serving: 3.9g
Smooth and rich, Hermosa grass-fed whey protein powder is perfect for those who want high-grade protein. Each 30g scoop delivers over 20g of premium protein sourced from grass-fed cows in the Lake District or Ireland, providing nine essential amino acids for muscle repair and growth. Gluten-free, non-GMO, soy-free, vegetarian, and halal-friendly, we found that it mixes easily into shakes, smoothies, pancakes, or porridge.
Available in an indulgent chocolate or a subtle vanilla, it’s naturally sweetened with pure stevia, giving you a clean, satisfying taste with no artificial aftertaste. You'll find boutique fitness studios like Barry’s using Hermosa at their refuel bars too, and it is clear to see why. Hermosa's protein balances performance, convenience, and taste in a way few others do.
Available from:
ESN Isoclear whey protein isolate
Available from ESN (£50.99)
Best clear protein powder
Star rating: 5/5
- Grams of protein per serving: 25 per 30g serving
- Calories per serving: 105 kcals
- Type of protein: whey protein concentrate
- Fat per serving: 0g
- Carbohydrates per serving: 0.7g
Light, refreshing and easy to drink, ESN Isoclear whey isolate stands out for those in search of a post-workout boost without the heaviness of traditional creamy protein powders. Each 30g serving provides up to 25g of clear whey protein isolate, with barely any fat, sugar or lactose. The clever filtering process results in a drink that’s more like a crisp soft drink than a traditional shake. The flavour is sweet but not overpowering, leaving a clean, hydrating finish with no lingering aftertaste. Perfect for rehydration after intense exercise, it’s both functional and enjoyable – a rare combination in the world of protein drinks.
Available from:
The Organic Protein Co organic whey protein, banana and lucama flavour
Available from Healf (£28), Amazon (£27.99), The Organic Protein Co (£28), Abel and Cole (£28.65)
Best organic protein powder
Star rating: 5/5
- Grams of protein per serving: 16.16 per 37.5g serving
- Calories per serving: 139.12 kcals
- Type of protein: whey protein concentrate
- Fat per serving: 0.9g
- Carbohydrates per serving: 15.71g
If you’re not a fan of hyper-processed, artificially sweetened protein powder, this one might be for you. Made with whey from organic milk and dried banana, this protein is really a cut above when it comes to quality. Our taste testers commented that it tasted just like banana bread – so obviously it got full marks from us.
The powder whizzed into water to create a nice, smooth, creamy texture that’s very pleasant to drink, similar to a milkshake. Another added benefit is the lucama powder that’s added to a natural hit of sweetness. It’s also certified organic by the Organic Food Federation, and for every pack the company donates 25p to Compassion in World Farming.
The brand offers a range of flavours, another favourite of ours was the raw cacao and maca. A 600g pack contains roughly 16 servings, coming in at £1.75 per serving.
Available from:
More Clear whey protein mango
Available from More (£42.99)
Best tasting protein powder
Star rating: 5/5
- Grams of protein per serving: 25 per 30g serving
- Calories per serving: 104 kcals
- Type of protein: whey protein concentrate
- Fat per serving: 0g
- Carbohydrates per serving: 0.7g
Refreshing and light, More Clear protein powder offers a welcome alternative to the usual thick, creamy shakes. With a texture and flavour closer to juice or cordial, it’s easy to drink and delivers an intensely fruity, sweet taste. The clear whey isolate means sugar, fat and lactose are filtered out, yet each serving still provides up to 25g of protein, making it suitable for recovery or a protein boost. There’s no chalky aftertaste or heaviness – just clean, hydrating refreshment. Ideal for those seeking a playful twist on protein, it turns supplementing into a treat rather than a task.
Available from:
Ancient + Brave Ancestral Protein
Available from Ancient + Brave (£52)
Best beef protein powder
Star rating: 4.5/5
- Grams of protein per serving: 22g per 30g serving
- Calories per serving: 110 kcals
- Type of protein: beef protein isolate and collagen protein
- Fat per serving: 1.1g
- Carbohydrates per serving: 3g
Beef organs might sound a little off-putting. However, Ancient + Brave Ancestral Protein has become one of my favourite clean protein powders thanks to its exceptional ingredient profile. Unlike most protein powders, it feels more like a daily wellness supplement than a post-workout shake. Alongside 22g protein, it contains grass-fed beef protein isolate, hydrolysed collagen, freeze-dried liver and kidney, methylated B vitamins, choline and Actazin kiwifruit extract for digestive support.
The cacao flavour is rich and earthy, with gentle sweetness from coconut sugar rather than artificial sweeteners. It's less creamy than whey protein and has a slightly savoury finish, but the wholefood ingredients make it feel more substantial and nourishing. The main drawback is the price: at around £2.60 per serving, it's one of the most expensive protein powders I tested, and its protein content is lower than that of many whey isolates.
Available from:
Bulk pure whey isolate
Available from Bulk (£39.99)
Best low-calorie protein powder
Star rating: 4.5/5
- Grams of protein per serving: 26g per serving
- Calories per serving: less than 110 kcals
- Type of protein: whey protein isolate
- Fat per serving: very low
- Carbohydrates per serving: very low
If your priority is maximising protein intake while keeping sugar and fat to a minimum, Bulk delivers just that. Made from 100 per cent whey isolate, each serving provides up to 26g protein while remaining low in calories, carbs and fat.
I tried the white chocolate flavour, which is creamy without being overly sweet, and mixes exceptionally well with almost no graininess. Compared to many whey concentrates, it feels lighter and cleaner to drink. I also tested the unflavoured version, which blends easily with water and other supplements, adding virtually no taste or texture.
The formula is straightforward and focuses on recovery and helping you hit your protein targets. I also experienced less bloating than I had with some other protein powders. The inclusion of sucralose and xanthan gum may not appeal to everyone, but overall, the ingredient list remains relatively simple for a flavoured protein powder.
Available from:
MyProtein Impact chocolate brownie whey protein
Available from MyProtein (£16.99)
Best whey protein powder
Star rating: 4.5/5
- Grams of protein per serving: 23g per 30g serving
- Calories per serving: 114 kcals
- Type of protein: whey protein concentrate
- Fat per serving: 2g
- Carbohydrates per serving: 2.2g
There are more than 40 flavours of this popular powder. While we haven't tested any others, the chocolate brownie was definitely a winner. The powder mixed beautifully, forming a milkshake-like consistency that would be ideal for those who like a thicker shake.
We were worried the chocolate brownie flavour might be too intense, especially for those wanting to take their protein in the morning, but we were pleasantly surprised to find it's more subtle than overpowering. It has a milk chocolate aftertaste, making it easy to drink and very filling.
The ingredients list is also reassuringly short, which isn't always the case when it comes to protein supplements, and it's also suitable for vegetarians. With 15 servings per 500g packet, it's just over £1 per scoop.
Nutritional information based on the unflavoured version.
undefinedAvailable from:
Free Soul vegan protein blend
Available from Free Soul (£22)
Best protein powder for women
Star rating: 4.5/5
- Grams of protein per serving: 20g per 30g serving
- Calories per serving: 101 kcals
- Type of protein: pea, hemp
- Fat per serving: 2.2g
- Carbohydrates per serving: 3.8g
If you’re vegan and after a one-stop shop for protein, key vitamins and minerals, you might want to give this powder a whirl. With a malty, nutty flavour, it was very palatable and not too sweet, despite using steviol glycosides in the ingredients.
This whizzed up to create a smooth, satisfying shake that would be drinkable enough on it's own or added to a smoothie. There’s an array of added nutrients that have been formulated with the nutritional needs of women in mind. These include iron, calcium, magnesium, biotin (B7), thiamine (B1), vitamin B6, vitamin B12 and pantothenic acid (B5).
It’s worth taking a careful look at the packet before you purchase, and bear in mind whether you already take any nutritional supplements or have any specific nutritional needs. A 600g packet contains roughly 20 servings, coming in at £1.10 per serving.
undefinedMore Protein iced matcha latte
Available from More (£37.99)
Best casein protein powder
Star rating: 4/5
- Grams of protein per serving: 18 per 25g serving
- Calories per serving: 159 kcals
- Type of protein: whey protein isolate, casein protein
- Fat per serving: 4.2g
- Carbohydrates per serving: 10g
A refreshing take on post-workout drinks, the More Protein Iced Matcha Latte offers a sweet, syrupy flavour reminiscent of a matcha latte with a bold twist. Made with real matcha, a blend of whey and casein proteins and glucomannane for a satisfyingly thick texture, it delivers a rich taste with far less sugar than typical ready-made options. The sweetness is pronounced, so adding a splash of milk helps create a creamier, more balanced drink. Ideal for those seeking a quick caffeine boost and a full-flavoured treat, it stands out as an enjoyable, convenient option for matcha fans.
Available from:
Protein Works vanilla crème diet whey isolate 90
Available from Protein Works (from £22.49)
Best vanilla protein powder
Star rating: 4/5
- Grams of protein per serving: 23g per 25g serving
- Calories per serving: 92 kcals
- Type of protein: whey protein isolate
- Fat per serving: 0g
- Carbohydrates per serving: 0.6g
Protein Works vanilla crème diet whey isolate 90 is a good option if you're looking to increase your protein intake without boosting your calories and fat.
The vanilla cr̬me flavour is quite custardy Рmaking this a great option for those who want a sweeter protein shake, although it is made using stevia instead of added sugars. The powder foams up quite a lot after mixing, giving it a velvety, frothy consistency that we enjoyed. Made with 150ml water, it was on the thinner side Рtry mixing with milk if you prefer a thicker shake.
A 1kg packet provides around 33 servings, so each scoop costs roughly 99p.
Available from:
undefinedMaxi Nutrition Cyclone Strength
Available from Maxi Nutrition (£49.99), Amazon (£49.48)
Best mass-gainer protein powder
Star rating 4/5
- Grams of protein per serving: 31 per 60g serving
- Calories per serving: 204 kcals
- Type of protein: Whey protein isolate, whey protein concentrate, creatine monohydrate
- Fat per serving: 1.2g
- Carbohydrates per serving: 12g
The taste of this powder was quite nostalgic, one taster compared it to foam banana sweets, but if you're into bananas and you like your protein sweet, this is a good choice.
This powder stood out from the rest as it contains creatine, a substance which sends energy to the muscles, meaning it may be useful if you're bulking or working hard to gain muscle mass.
Although it does note an impressive 31g of protein per scoop, that's for a whopping 60g serving – almost twice that of other powders. So, while you do get a lot of protein, you have to take a lot of powder to get it. That means the tub it comes in is pretty huge (maybe an issue for those with a small kitchen) and you'll need to drink a lot to get it down. However, it might the right choice for anyone looking to really ramp up protein. We should also note that the portion size means this has slightly more calories per serve.
A 1.26kg pack contains roughly 21 servings, coming in at £2.38 per serving.
Available from:
Innermost The Strong Protein smooth chocolate flavour
Available from Innermost (£33)
Best protein powder for muscle gain
- Grams of protein per serving: 34g per 40g serving
- Calories per serving: 147 kcals
- Type of protein: whey protein concentrate, whey isolate and casein
- Fat per serving: 1.1g (0.3g sat fat)
- Carbohydrates per serving: 0.8g (0.8g sugar)
At last – a protein shake that mixed super easily in the shaker! This one blended up like a dream into a smooth, highly sippable shake. We enjoyed the chocolate flavour, which was quite delicate and not overpowering when it came to sweetness.
Although it sits at a higher price point than some of the competitors, you do get quite a nutritional bang for your buck with this powder. This blend also includes creatine monohydrate, Montmorency cherries, bilberries and magnesium, with the aim of increasing muscle mass, reducing inflammation and boosting exercise performance.
A 600g packet contains roughly 15 servings, coming in at around £2.20 per serving.
undefinedHow to use protein powders safely
Supplements such as protein shakes need to be consumed as part of a healthy, balanced diet, and not used as a substitute for whole food. Nutritionist Kerry Torrens explains:
"Protein powders are highly processed and lack the micronutrients and other beneficial nutrients of whole, natural food. We should all aim to achieve our protein from a well-balanced diet, but for short-term use or in certain circumstances, protein supplementation may be considered."
Discover how to eat a balanced diet and the best protein sources, including options for vegetarians and vegans.
Who could benefit from using a protein supplement?
If you're regularly getting enough protein from your diet, adding a supplement might not make a noticeable difference to your health.
However, those who are either unable to regularly eat enough protein due to decreased appetite or illness or have increased protein needs as a result of high-intensity exercise might benefit from taking a supplement.
Kerry explains: "One example, which is probably not an obvious one, is the elderly. This group often has a greater need for protein, but a lower appetite. Increasing protein intake in a form that is palatable and suits their lowered appetite may be effective in protecting against muscle loss.
"That said, in this group, other aspects such as kidney health and osteoporosis need to be considered and monitored – it’s worth checking with a GP that protein supplements are safe and suitable for each individual."
Who shouldn’t take protein supplements?
Children shouldn’t take protein supplements unless directed by a dietitian. The NHS advises that consuming too much protein in the long term is linked to an increased risk of osteoporosis, and may worsen existing kidney problems.
Some people find protein powders difficult to digest – it’s best to include them gradually into your diet and see how you get on.
Although allergens should be stated on the label, anyone with allergies should be cautious about using a new supplement, as there is an obvious risk of cross-contamination in factories. Those who are pregnant, breastfeeding or being treated for existing medical conditions should consult their GP before starting new supplements.
Is it possible to take too much protein?
Yes. The Department of Health advises adults to avoid consuming more than twice the recommended daily intake of protein (55g for men and 45g for women). Always read the label of any protein supplement carefully, stick to the recommended serving size and be mindful of other protein sources in your diet. If you’re concerned that you might be consuming too much protein, speak to your GP.
How to choose a protein powder
Choosing a suitable protein powder will depend on your personal requirements and goals. For example, if you're looking to gain weight or build muscle, you might want to consider a 'mass gainer' product that is higher in calories and carbohydrates. Look for a product to fit your dietary requirements and double-check allergen labelling on the packet.
When choosing a protein powder, make sure that you buy from a reputable company that's ideally based in the EU, as those that are based outside of Europe may not pass the same safety standards as those within. If you’re in any doubt about the safety of a product, speak to your pharmacist or GP.
What is protein powder made of?
Protein powder is made from various protein sources, with whey protein being the most common. Whey protein is extracted from cow’s milk during the cheese-making process. Whey is a complete protein, meaning it contains all nine essential amino acids needed by the body, supporting muscle growth and recovery. Another dairy-based option is casein. This is digested more slowly, meaning it gradually releases protein over time.
For those who prefer plant-based protein, powders can be made from sources such as rice, pea, soy and hemp. These ingredients are often combined to ensure a balanced amino acid profile, as some plant proteins lack certain essential amino acids.
- Read our review of the best vegan protein powders
Egg white protein is another good option, particularly for those who are lactose intolerant.
Many protein powders contain additional ingredients such as sweeteners, flavourings, vitamins and digestive enzymes to improve taste and absorption. But, unflavoured varieties are available for those after a simpler option.
Is protein powder good for you?
Protein powder is a concentrated source of protein designed to be used as a supplement to a balanced diet, particularly for those with increased protein needs due to exercise or those who may be lacking, such as vegans. While these powders can support muscle repair, growth and overall health, they should not be used to replace food sources such as lean meat, fish, eggs, dairy, seeds, nuts and beans, which provide a more diverse range of essential nutrients.
You should also be aware that protein powders often contain added sugars or artificial sweeteners. This is another reason why it's better to get your intake from whole foods.
Be aware that excessive protein powder consumption may put strain on the kidneys, particularly in those with pre-existing conditions. If you're worried, speak to a nutritionist, dietitian or doctor and ensure you stick to the recommended intake levels.
More protein powders tried and tested:
- Crazy Nutrition 100% Tri-Protein chocolate flavour, £54.99 for 1kg
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Always keep supplements out of the reach of children. Unless otherwise stated we tested products available in the UK market that are suitable for adults. Check the product label and ingredients before purchase to ensure it is appropriate for your individual circumstances.
A qualified nutritionist (MBANT), Kerry Torrens is a contributing author to a number of nutritional and cookery publications including Good Food. Kerry is a member of the The Royal Society of Medicine, Complementary and Natural Healthcare Council (CNHC), British Association for Applied Nutrition and Nutritional Therapy (BANT).
All health content on goodfood.com is provided for general information only, and should not be treated as a substitute for the medical advice of your own doctor or any other healthcare professional. If you have any concerns about your general health, you should contact your local healthcare provider. See our website terms and conditions for more information.
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