Best whey protein 2025: a dietitian’s opinion (15 brands)

What are the best whey proteins on the market? Maxime Mességué, a dietitian-nutritionist, analyzed 15 brands in detail using 6 criteria to produce this definitive comparison. Discover the 3 best whey proteins to maximize your muscle gain and fat loss goals.

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2025 Rankings

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#4: Protein Works – 4.4/5

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#5: Nutrimuscle – 4.4/5

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#6: Foodspring – 4.2/5

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#7: Optimum Nutrition – 4.2/5

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#8: BiotechUSA – 4.0/5

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#9: Eiyolab – 4.0/5

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#10: My Protein – 4.0/5

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#11: Bulk – 3.8/5

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#12: NU3 – 3.8/5

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#13: EAfit – 3.6/5

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#14: Scitec Nutrition – 3.4/5

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#15: AMFIT – 3.2/5

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Whey protein comes from the dairy industry; it comes from milk serum, or whey. Milk serum is obtained when the milk coagulates during the cheese-making process.

This whey contains mainly lactose and small, soluble proteins that are rich in essential amino acids. Its biological value (the degree of assimilation and the quality of the amino acids) is 104 to 114, which makes it one of the best proteins.

It’s easier to understand why athletes have gotten into the habit of consuming it to meet their protein needs and to increase their muscle mass.

But there are many types of whey, and even more brands: it’s becoming increasingly difficult to find your way around the labels and therefore to make the right choice.

To make things clearer,  I tested and compared 15 whey proteins among the best-selling online, I rated them based on 5 quality criteria, then I selected the 3 best products.

Brands tested : AMFIT, BiotechUSA, Bulk, EAfit, Eiyolab, Foodspring, My Protein, NU3, Nutri&Co, Nutrimuscle, Nutripure, Optimum Nutrition, Protein Works, Pure AM Nutrition, Scitec Nutrition.

We evaluate all dietary supplements independently. If you click one of the links we provide, we may receive a commission, which does not affect the price or the ranking.

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Best whey proteins: my detailed review

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#1: BEST UNFLAVORED WHEY 🥇

Nutripure is a French brand founded in 2018 by two brothers who are elite athletes. Their ambition is to create a brand of “perfect” dietary supplements, meaning free of controversial substances and of optimal quality. 

Nutripure Native Whey Isolate contains 94 g of protein per 100 g with 22.4 g of BCAAs per 100 g, which is particularly high.  It contains very little fat (1.9 g) and carbohydrates (3 g).

This whey is native, made from fresh milk from French pastures. The proteins are isolated by cold microfiltration. They therefore remain intact and are not denatured by heat treatment. 

Nutripure eliminates any controversial substances : this whey contains only milk protein isolate and sunflower lecithin, an emulsifier that isn’t problematic. As a result, the powder mixes very well; it doesn’t clump.

There is also a cocoa version that adds an indulgent touch without an artificial aftertaste, though I would have preferred a slightly sweeter flavor.

This whey is one of the most expensive in our comparison (€46.5 per kg), but the price is perfectly justified by the quality of the product.

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BEST FLAVORED WHEY

Nutri&Co is a French brand created in 2017. It specializes in selling dietary supplements designed to improve health, beauty, and athletic performance. Its goal is to provide the best possible quality with simple formulas and no controversial ingredients, at a fair price.

Nutri&Co chocolate-flavored isolate and native whey contains 83 g of protein per 100 g with 24.8 g of BCAAs. This composition is very rare for whey; it reflects exceptional milk quality. It contains 5.3 g of carbohydrates, which is on the lower end of the comparison.

Nutri&Co whey is native, so it does not come from whey produced by the cheese industry, but directly from milk. The proteins are cold-extracted by microfiltration, which preserves their quality.

The milk used to make the whey comes from cows on French pastures, it’s the best possible quality for whey right now.

Nutri&Co whey contains only 2 additives: xanthan gum and sunflower lecithin. They are not controversial. The brand has chosen not to use chemical sweeteners: for sweetness, only steviol glycoside (from stevia) is used.

The powder mixes well and doesn’t clump, its chocolate flavor is pleasant, with no chemical aftertaste.

The Nutri&Co brand also has an excellent rating of 4.5/5 on the Trustpilot site, with many positive reviews highlighting product quality, the brand’s transparency, and the responsiveness of customer service.

This whey is among the most expensive on the market at €49.90 per kg, but quality comes at a price!

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BEST PRICE-TO-QUALITY RATIO

PURE AM Nutrition is a French brand founded in 2017, specializing in dietary supplements for athletes. It is part of the N4Brands group, which also owns FitnessBoutique, the leading retailer in France for fitness equipment and sports nutrition products.

AM Nutrition’s whey isolate contains 85 g of protein per 100 g, with 17.5 g of BCAAs: it’s an excellent composition.

It contains very little fat (1.4 g per 100 g) but a rather high amount of carbohydrates (9 g). That’s uncommon for an isolate. This indicates a higher amount of lactose than some isolates. This can be problematic for sensitive or intolerant individuals.

AM Nutrition whey is native, it doesn’t come from a by-product of the cheese industry but directly from milk: it is therefore of higher quality because no heat treatment is used to extract the proteins.

The milk used is French.

Its sweet taste comes from a blend of sweeteners : steviol glycoside (natural) and sucralose (artificial and sometimes considered controversial). I tested AM Nutrition vanilla-flavored whey : I liked its taste, sweet just right.

I was less of a fan of the rather runny and foamy texture on the surface, with a few lumps. This texture most likely comes from the absence of a texturizing agent in the formula.

This native whey isolate can be purchased at a very reasonable price given its premium quality and formulation. Its price is €34.2 per kg when using a 20% off promo code that’s always available on the site: it’s unbeatable.

For me, this is the whey with the best value for the money.

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The other whey proteins in the comparison

Protein Works – Whey Protein 80

A whey concentrate at an attractive price, with a well-balanced chocolate flavor and a creamy texture. It mixes easily and is very pleasant to drink. Its protein content is good for a whey concentrate.

Despite the presence of a few additives, the lack of information on origin, and the lack of details on the amino acid profile, it is a compelling option for those on a tight budget.

Nutrimuscle – Native whey isolate

Nutrimuscle is a French brand known for its transparency and the quality of its products, notably its native whey isolate rich in protein (81.2 g/100 g) and BCAAs. Despite a relatively high carbohydrate content for an isolate (7.2 g), the presence of lactase supports good digestive tolerance.

The formula stands out for the absence of glycomacropeptides, the presence of prebiotics and probiotics, and a smooth texture with a pleasant cocoa taste. Priced at €42.90/kg, it offers excellent value for the price, despite the use of sucralose, a controversial sweetener.

Foodspring – Whey Protein

A blend of whey concentrate and isolate, with a multitude of original flavors and an overall creamy texture, despite some possible clumps.

Sourced from the milk of pasture-raised, grass-fed cows in New Zealand, it is notable for the low amount of protein it offers—the lowest in our comparison. I also question the point of sourcing from so far away for a product whose quality still has room for improvement.

Optimum Nutrition – Gold Standard 100% Whey

A longstanding brand, this whey combines isolate, concentrate, and hydrolysate for rapid absorption. I appreciated the chocolate flavor for its balance, with a smooth, lump-free texture. The amount of protein is decent for a blend, but the BCAA levels could be better.

This whey also contains controversial sweeteners. It’s also a shame not to have information about the origin of the ingredients: a bit more transparency would be welcome.

BiotechUSA – Iso Whey Zero

Very high in protein with added BCAAs and glutamine, this whey stands out for its native quality. The chocolate flavor is not very sweet, the texture is creamy, and the solubility is impeccable. It clearly positions itself in the high-end category, with a price to match.

However, the presence of 7 additives is excessive for whey at this level, and the lack of information about its origin is regrettable.

Eiyolab – Isolate HT

Highly protein-rich whey isolate (86%), with an exemplary amount of BCAAs at 20 g. Its texture is fairly liquid, dissolves well, and has no lumps.

The milk used comes from Europe, which is a good point, but that’s still a bit vague: I regret not having more information on traceability. Sensitive palates, beware: the sweet taste is particularly pronounced.

My Protein – Impact Whey Protein

Ultra-popular whey concentrate with a wide selection of flavors (36!). The chocolate flavor is very sweet but indulgent. The texture is smooth, the solubility is good, making it an ideal option for regular use at a low price.

The protein content is average, but the amount of BCAAs is still appealing. However, there is a real lack of traceability, which is unfortunate.

Bulk – Pure Whey Protein

This whey concentrate has a decent protein content, though not optimal, and a fairly low amount of BCAAs compared to other whey products on the market. I find it overall well-balanced, with a creamy texture, even if it can sometimes form lumps. The vanilla flavor is classic and well-balanced. It’s made from the milk of pasture-raised cows, which is appreciated, especially at this price.

We know it comes from Europe, but I would like more details for complete traceability.

NU3 – Performance Whey

This whey has one of the lowest protein and BCAA contents in our comparison, which limits its nutritional value. It’s still pleasant to drink: sweet, creamy, with very good solubility.

The vanilla flavor is intense, maybe even too much for me. It contains 3 non-controversial additives, which is rather reassuring, even though I regret the lack of traceability. 

EAfit – Pure Whey

This whey is a blend of concentrate, isolate, and hydrolysate, enriched with vitamins and enzymes. It has an average protein content (76%) and a BCAA amount that is also lower than other products in the comparison. The double chocolate flavor is light and pleasant, the texture is smooth, and it dissolves very well.

I regret the presence of several controversial sweeteners, as well as an overall number of additives that is too high, some of which raise concerns. Another weak point: the total lack of information about the milk’s origin.

Scitec Nutrition – 100% Whey Protein Professional

This whey concentrate is enriched with enzymes, glutamine, and BCAAs, but despite that, it contains little protein and a low amount of BCAAs compared to the other whey products in this comparison. It contains two controversial sweeteners, which give it a very sweet and strongly flavored taste.

The texture is creamy, but I find the aftertaste a bit too persistent. In terms of solubility, no complaints; it’s perfect. However, there’s a real lack of transparency about the milk’s origin, and its price is clearly high given the quality on offer.

AMFIT – Whey Protein

This simple and very affordable whey is a blend of concentrate and isolate. The amount of protein is not particularly high, and the lack of an amino acid profile means you can’t know the actual BCAA content, which is a shame. Its texture is a bit gritty, the strawberry flavor is subtle, and a few lumps may appear.

It’s decent for getting started or in a pinch, but I regret the lack of transparency about the origin of the milk and the formulation. That clearly shows in its low overall score.

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Full ranking

Notes sur 5	Note globale	Nutrition	Sécurité	Gout	Solubilité	Marque
# Best flavored whey 🍫 > Nutri&co – Native Whey Isolate	5.0	5	5	5	5	5
# Best unflavored whey 🥇 > Nutripure – Native Whey Isolate	4.8	5	5	4	5	5
# Best value for money 💸 > Pure AM nutrition – Pure Whey Isolate	4.4	5	4	5	4	4
Nutrimuscle	4.4	5	4	4	5	4
Protein Works	4.4	4	3	5	5	5
Foodspring	4.2	4	4	5	4	4
Optimum Nutrition	4.2	4	3	5	5	4
BiotechUSA	4.0	4	3	5	5	3
Eiyolab	4.0	5	4	3	5	3
My Protein	4.0	4	4	4	5	3
Bulk	3.8	3	4	5	3	4
NU3	3.8	3	3	4	5	4
EAfit	3.6	4	3	2	5	4
Scitec Nutrition	3.4	3	3	3	5	3
AMFIT	3.2	3	3	4	4	2

→ Access my complete comparison table here (Google Sheet)

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My rating criteria

To draw up this comparison, I defined 5 qualitative criteria based on the products’ characteristics and on my test of each of the 15 whey proteins.

Each criterion has a score out of 5, and the average of the 5 criteria determined my ranking.

For each whey protein, I also looked at the price per kg, to highlight the best value-for-money options

→ Access my full comparison table here (Google Sheet)

1. Nutritional value

To compare the nutritional value of the different whey proteins, I relied on two main criteria: their protein content and their BCAA content.

To make the comparison as fair as possible, I checked the ingredients and nutrition facts of the chocolate-flavored versions, which are generally the most commonly consumed.

In general, the higher the protein content of a whey protein, the fewer carbs and fats it contains—which is a good indicator of quality.

Conversely, when the protein content is lower, you often find more so-called “filler” ingredients.

BCAA (branched-chain amino acids) content is also an essential criterion. The more BCAAs a whey protein contains, the more effective it will be at supporting muscle building. It’s also a reflection of the quality of the milk used and of a gentle extraction process that preserves the integrity of the proteins without denaturing them.

2. Safety

To rate the safety of the different whey proteins, I relied on four sub-criteria: 

• The origin of the milk used and how the cows are fed
  Thus, pasture-raised or grass-fed cows produce higher-quality milk than cows from intensive farming.

• Whether it is native or not
  When whey is native, filtration is done cold, which preserves the full integrity of the proteins. 

• The number of additives and texturizing agents
  Most of the texturizing agents used are not controversial, but their presence in large quantities is not ideal for the body. On a daily basis, the goal is to choose products with the shortest possible ingredient list.

• The sweeteners used
  There are 3: sucralose, acesulfame K, and steviol glycoside. The first two are controversial, whereas the steviol glycoside currently seems harmless.

3. Brand reputation

To assess the reputation of the different whey brands, I looked at several data points:

• The brand’s longevity
  A brand that’s been around for several years (or decades) has often proven its worth. It has managed to retain its customers and maintain a certain level of quality. For me, that’s a real sign of reliability.

• Presence on Instagram
  I also looked at the size of communities on Instagram. It’s not the most decisive criterion, but it gives an idea of the engagement around the brand and the relationship it has with its customers.

• Customer reviews
  I relied on the feedback available on platforms like Amazon, Trustpilot, or Avis Vérifiés (depending on the one most used for each brand). I did not take into account the ratings of brands with fewer than 100 reviews, because that seems too unrepresentative to me. Conversely, a large number of positive reviews is a real sign of customer satisfaction and therefore a good indicator of trust.

4. Solubility

A whey protein that mixes well and doesn’t clump is pleasant to consume.

I therefore tested the solubility of the 15 brands by mixing 30 g of whey with 250 ml of water in a shaker. Each whey was mixed for 10 seconds to ensure a fair comparison.

5. Taste

This part is more subjective, so I based it on my personal tastes!

I evaluated:

• Texture, prioritizing creamy textures 
• The intensity of sweetness, prioritizing less sweet whey.
• The naturalness of taste, by favoring natural flavors and discouraging overly chemical flavors

6. Price per kg

I always compared the prices of the “small” sizes, the bags ranging from 750 g to 1 kg. Indeed, prices vary greatly depending on the quantity: the more you buy in bulk, the lower the price per kilogram.

When a discount is applied permanently, it was included in the final price for the comparison.

The price per kg does not factor into the calculation of the final score, but it allows for a clear view of the value for money offered by each brand.

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The different types of whey

Whey concentrate

It’s the best-selling whey on the market. Concentrated whey mainly comes from the cheese industry. 

During cheese production, casein (a solid protein) is separated from whey by high-temperature heat treatment. This treatment denatures some of the proteins. The whey is then dehydrated, which produces concentrated whey. 

It contains about 80% protein, but also fat and lactose. Its cost is relatively low, which makes it an attractive option for those on a budget. However, people who are sensitive to lactose should be careful because it’s less digestible.

Native whey

Native whey does not come from the cheese industry. Whey is separated from casein by cold filtration directly from milk. There is no protein denaturation.

This whey is purer and therefore better absorbed and easier to digest. It is considered a high-quality whey protein. However, its more demanding manufacturing process makes it more expensive.

Whey isolate

Whey isolate is a concentrated whey protein that has undergone an additional filtration. It has been stripped of a large portion of its fat and lactose. 

It is particularly suitable for people who are lactose intolerant, or for those who want to add as few calories as possible to their diet.

Its nutritional profile is exceptional because it contains around 90% protein, but it’s more expensive to produce.

Good to know: a whey protein can be both native and isolate. This is the best quality on the market.

📚 Read also | Best whey isolate: a dietitian’s selection

Hydrolyzed whey

Hydrolyzed whey is a whey isolate that has undergone an additional enzymatic treatment. This process results in a kind of pre-digestion of proteins, which makes them more rapidly absorbed by the body.

It’s the most processed form of whey, but also the easiest to digest. It’s ideal for people with digestive issues or for athletes who need an immediate protein intake: very intense training or competitions.

It is generally more expensive and has a more bitter taste, because hydrolysis releases peptides with a more pronounced flavor. Even when flavored, hydrolyzed whey is less pleasant to consume than other types. You should take this into account before choosing it.

Vegan whey

Vegan whey does not exist: by definition, whey comes from milk and therefore contains animal proteins.

However, there are many 100% plant-based alternatives in the form of protein powders.

These substitutes, suitable for a vegan diet, are often made from a blend of pea, rice, hemp, and soy proteins to ensure a complete amino acid profile.

📚 Read also | Comparison of the best plant-based protein powders

Frequently asked questions (FAQ)

What is whey used for?

Whey is a fast, easily absorbed source of protein, used to meet increased protein needs, especially with regular or intense exercise.

It contains all essential amino acids, with a high BCAA content, making it an excellent support for recovery and muscle growth. Thanks to its composition, whey is digested quickly, which allows muscles to receive what they need immediately after exercise.

In summary, whey is not a meal replacement, but a convenient supplement to optimize protein intake, promote recovery, and support muscle building, especially after workouts.

How much whey should you consume per day?

The amount of whey to consume depends on your overall protein needs, which vary based on your weight, your level of physical activity, your goals (muscle gain, maintenance, weight loss), and what you eat.

If your diet covers a good portion of your needs, whey can simply be used as a supplement.

In general, I recommend about 20 to 30 g of whey after a workout to support muscle recovery. That corresponds to a standard serving, easy to fit into your day.

There’s no need to consume it in excess: what matters is the balance of your total protein intake over the course of the day, not the amount of whey itself.

How many times per day can you take whey?

Again, there’s no universal rule. It all depends on your protein needs and what you’re already getting through your diet.

For example, a person who eats a lot of meat, fish, eggs, or dairy products will probably not need more than one serving (or even none). Conversely, someone who follows a diet low in animal products or who has very high needs (intense training, bulking) can take it twice a day.

What matters isn’t the number of servings, but the total amount of protein over the course of the day. Whey simply supplements your diet; it doesn’t replace it.

Where can you buy whey?

You can easily find whey online or in stores.

You can find it in specialty sports nutrition stores, in some large sporting goods stores, and even at pharmacies. And of course, online, either on platforms like Amazon, or directly on brands’ websites, which sometimes lets you get advice or exclusive deals.

As part of our test, we ordered whey protein on Amazon or directly from the brands via their online stores.

The most important thing is to choose a brand that is transparent about its ingredients, with good ingredient traceability.

When should you take whey?

There isn’t a single time that would suit everyone, but certain times are more beneficial depending on your goals.

The most common time would be right after training : muscles are more receptive to protein, and whey, which is absorbed quickly, helps optimize recovery and muscle rebuilding.

You can also have it as a snack, especially if meals are spaced out or low in protein, or incorporate it into a meal (in oatmeal, a smoothie, etc.) to increase the protein content.

What you should remember above all is that spreading your protein intake throughout the day is more effective than concentrating it all in a single meal or only after exercise. The body uses protein better when it is spread out regularly, in line with your needs at each moment of the day.

Whey or casein?

Whey (lactoserum) comes from the liquid part of milk after coagulation. It contains soluble, small proteins that are highly digestible and quickly absorbed. That’s what makes it an excellent choice right after your workout, to quickly supply your muscles with the amino acids they need.

Casein, for its part, comes from the solid part of milk; you’ll find it in particular in yogurts, fromage blanc, skyr, faisselle… These are larger proteins, slower to digest, and sometimes less well tolerated depending on the individual.

The use is therefore different: casein is often taken in the evening, to release protein slowly throughout the night, which helps limit muscle catabolism (muscle breakdown).

That said, casein is mainly for those who have very high protein needs, such as people who do very intensive training like bodybuilding. For most people who work out, whey is more than enough.

Whey or BCAAs?

BCAAs (valine, leucine, isoleucine) are three essential amino acids: the body cannot produce them; they must come from the diet. They play a key role in muscle building and recovery. Without them, there is no effective protein synthesis.

That said, if you use a quality whey protein, you already get a good dose of BCAAs. So it’s not necessary to add more, except in very specific cases.

Taking BCAAs can be useful right before your workout, particularly to limit muscle catabolism during long or intense sessions. But if your overall protein intake is sufficient, it isn’t essential.

In summary:

• BCAAs are already present in good amounts in a quality whey protein
  
• Taking extra BCAAs is only useful in very specific contexts
  
• The priority remains to have adequate protein intake throughout the day

📚 Also read | Comparison of the best BCAAs

Whey or creatine?

It’s a question I’m often asked, and in reality… they are two very different things.

Creatine is an amino acid derivative naturally present in the body, especially in the muscles and the brain. It is produced by the kidneys, liver, and pancreas from three amino acids: arginine, glycine, and methionine. Its role is to provide energy quickly during short, intense efforts. It is therefore particularly useful for strength, power, or bodybuilding sports.

Whey, on the other hand, is a source of protein. It serves to promote muscle recovery and the development of lean mass after exercise. So it’s nothing like creatine.

In summary:

• Creatine boosts performance during training.
• Whey protein helps with recovery and muscle building.

The two can be complementary, depending on your goals.

📚 Read also | What is the best creatine on the market?

Does whey help you lose weight?

No, whey is not a weight-loss product. Its main role is to support the growth or maintenance of muscle mass, especially in active individuals.

However, building muscle mass increases basal metabolic rate, that is, the amount of energy the body expends at rest. In this context, if the diet is low-calorie (calorie intake below needs), whey can indirectly help promote fat loss by limiting muscle loss and aiding recovery.

Are there any risks and contraindications to consuming whey?

Whey itself is not dangerous. When used to supplement protein intake in a balanced diet, it can even be very useful: for athletes, vegetarians, or simply those who have trouble meeting their daily protein needs.

But as with anything, it’s excess that causes problems. When you consume too much protein over the long term, especially as part of a diet that’s already too high in calories, there can be adverse effects: digestive issues, strain on the kidneys or liver, and even unwanted weight gain.

Among some young people, a possible worsening of acne is also observed, especially with regular whey consumption as part of an imbalanced diet.

People with renal insufficiency, even mild, should be very careful. In this case, it is strongly advised against consuming whey without medical advice.

Is whey essential for building muscle?

No, definitely not. I’m often asked this, and I’ll repeat it: you can absolutely build muscle without ever touching a shaker. What matters is getting enough protein over the day, and that can work perfectly well with a regular diet: meat, fish, eggs, legumes, tofu, dairy products…

Whey is just a tool. It can come in handy when you have a busy schedule, a small appetite, or slightly higher needs. But it’s neither essential nor magical. If your meals are well put together, you can absolutely do without it.

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