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Best protein powder 2021: Boost your nutrition

Best protein powder: Man putting whey protein with amino acids bodybuilding dietary supplement in shaker
(Image credit: Getty / Albina Gavrilovic)

The best protein powders are a great way to supplement your protein intake if you struggle to get enough in your day-to-day diet. Protein is an essential macronutrient that helps to build muscle, so if you're looking to make substantial gains then you might want to consider investing in a good protein powder. 

What the experts say

"A safe level of protein ranges from 0.8 grams of protein per kilogram [2.2 lbs.] of body weight, up to 2 grams of protein per kilogram for very active athletes… Most Americans truly need to be eating about 1 to 1.2 grams of protein per kilogram of body weight," says Jessica Crandall, a registered dietitian nutritionist, certified diabetes educator and national spokesperson for the Academy of Nutrition and Dietetics.

According to the US Department of Agriculture's Dietary Guidelines, between 10% and 35% of your daily calories should come from protein alone. 

"Most people are able to meet their protein needs through whole foods," says Julie Stefanski, RDN, CSSD, a registered dietitian and certified sports dietitian. "Athletes who have high-calorie needs appreciate the ability to get additional protein in a small amount of food. After an injury or an illness dietitians often recommend protein powders for people with poor appetites or high protein needs for healing." 

However, if you’re just starting out, the range and selection offered by the protein powders on the market can often feel overwhelming. Should you choose whey or plant protein? Do the high-end, higher-priced protein powders justify their selling price? In this guide, we’ve tested and assessed a range of protein powders to help you answer just that.

This guide is for non-vegans. If you have a vegan diet and are looking for alternative powders, we've compiled a guide dedicated specifically to the best vegan protein powders

Best protein powder

MyProtein Impact Whey Protein 

Best protein powder: myprotein

(Image credit: Amazon)

MyProtein Impact Whey Protein

Best protein powder on a budget

Specifications
Protein per serving: 0-21g (depending on flavor)
Carbs per serving: 1 - 3.2g depending on flavor
Calories per serving: 95 - 104kcal depending on flavor
Protein source: whey protein concentrate
Sweetener: Most flavors: sucralose; chocolate smooth: sucralose and acesulfame K; stevia flavors: stevia
Available flavors: more than 40 including chocolate, vanilla and strawberry cream
Reasons to buy
+Good value for money +Huge range of flavors 
Reasons to avoid
-Whey concentrate not isolate -More unusual flavors not to everybody’s taste 

If it’s just a solid, reliable, no-frills product you’re after, this could be the best protein powder for you. 

WHAT USERS SAY

This protein powder scores 4.2 stars out of 5 on Amazon, with enthusiasts praising it for its value, range of flavors and ease of mixing, and many feeling reassured by its ranking in independent tests, "I like this brand because you know what you're getting, based off independent lab testing". The main criticisms revolve around taste, particularly in the more unusual flavors which some find too sweet. 

MyProtein prides itself on providing an all-round, value-for-money product. It is ranked Grade A by independent tester Labdoor for both quality and value.

The protein comes from whey concentrate, which some people find causes bloating. There are few ingredients, although some of the flavor options include artificial flavors. It comes in more than 40 flavors and a range of sizes. If you’re bewildered by the choice, consider buying the sample pack which contains up to eight flavors to try before you commit to a larger size.


 Bulk Natural Pure Whey Isolate 

Best protein powder: Bulk protein powder

(Image credit: Amazon)

Bulk Natural Pure Whey Isolate

Best protein powder for sensitive stomachs

Specifications
Protein per serving: 24g
Carbs per serving: 1.5g
Calories per serving: 108kcal
Protein source: whey protein isolate
Sweetener: Stevia
Available flavors: Chocolate, strawberry
Reasons to buy
+Gentle on stomach +Small number of ingredients 
Reasons to avoid
-Only two available flavors -Stevia flavor rather overpowering 

Made with just whey isolate, with no whey concentrate, and sweetened only with stevia, which is a natural substance made from the leaves of the stevia plant, this is the best protein powder for anyone who suffers from a sensitive stomach. 

WHAT USERS SAY

It scores 4.5 stars on Amazon, with reviewers commenting favorably on the natural ingredients and the fact that it doesn’t leave them bloated. The negative reviews mostly relate to the flavor. "The stevia is so strong it leaves a nasty tangy aftertaste", complains one. If you don’t mind the taste of stevia, you may love it, though.

A reassuringly modest list of ingredients means you can be sure what’s in the powder. It’s low in carbs and pretty modest on calories, too, for the amount of protein per serving.

The downside is that stevia can be rather overpowering, and this powder scores less well than some of the best protein powders for flavor. The taste is somewhat thin and it’s very sweet. There are only two available flavors - strawberry and chocolate.


Gold Standard Whey Protein 

Best protein powder: gold standard protein powder

(Image credit: Amazon)

Gold Standard Whey Protein

Best unflavored protein powder

Specifications
Protein per serving: 24g
Calories per serving: 112kcal
Protein source: whey protein isolate, whey protein concentrate and hydrolyzed whey protein isolate
Sweetener: none
Available flavors: N/A
Reasons to buy
+Neutral flavor +Small number of ingredients 
Reasons to avoid
-Not the cheapest -Black tub hard to recycle 

Many protein powders come complete with a range of flavors – some more palatable than others. 

WHAT USERS SAY

The main objection to this product among reviewers (and there aren’t many who give it a low rating - it scores a solid 4.6 on 5 on Amazon) relates to price, and especially to recent price rises in the product. "I think it’s a quality product overpriced", says one. Unless you have a great recycling service, you may find that you can’t recycle the black tub, either.

However, if you want the flexibility to add your own flavors, or you dislike the sweeteners found in flavored whey products, this is a great choice. It’s not entirely flavor-free, but the taste is neutral enough (a mild, milky taste) that it won’t come strongly through your own flavors.

In common with most protein powders, it has added soy lecithin as an emulsifier, which is the only added ingredient beyond the whey products (which are a mixture of whey isolate, hydrolyzed whey isolate and whey concentrate). It mixes well, without too many lumps.


BSN True Mass 1200 

Best protein powder: True Mass

(Image credit: Amazon)

BSN True Mass 1200

Best protein powder for building mass

Specifications
Protein per serving: 53g
Carbs per serving: 216g
Calories per serving: 1,271kcal
Protein source: Whey protein concentrate, milk protein isolate, whey protein isolate, casein
Sweetener: Acesulfame K, sucralose
Available flavors: Chocolate milkshake, strawberry milkshake, vanilla ice cream
Reasons to buy
+>1,200 kcal per serving +Good value for money 
Reasons to avoid
-Only three flavors available-Doesn’t mix easily  

If gains are your goal, this will most definitely be the best protein powder for you. 

WHAT USERS SAY

Although in Amazon reviews it scores a healthy 4.5 on 5, there are some complaints of sore stomachs and bloating, and a few gripes about the flavor (although we found it pretty palatable). The main complaint is that it doesn’t mix easily - most reviewers recommend using a blender to mix it. The majority of reviewers are just delighted by their weight gains. "It gives me a noticeable boost in strength and size".

With a whopping 1,271 calories and 53g of protein per serving, not to mention 216g of carbohydrate (partly coming from ground oats), this is a protein powder for anyone who is serious about gaining mass. Dieters beware! Unlike BSN’s other mass gainer, it doesn’t contain creatine, so you can control whether or not you want that in your diet plan. 

It is true that part of the reason for the huge number of calories and mighty helping of protein is down to the serving size, which is large (two big scoops). Even allowing for this, though, it still makes for good value for money.


Orgain Organic Protein 

Best protein powder: orgain protein powder

(Image credit: Amazon)

Orgain Organic Protein

Best organic protein powder

Specifications
Protein per serving: 21g
Carbs per serving: 15g
Calories per serving: 150kcal
Protein source: Organic pea, organic rice and organic chia seed
Sweetener: Stevia
Available flavors: Creamy chocolate fudge, chocolate coconut, chocolate caramel sea salt, chocolate peanut butter, peanut butter, natural unsweetened, vanilla bean, iced coffee
Reasons to buy
+Healthy ingredients +Good range of flavors 
Reasons to avoid
-Stevia not to everyone’s taste -Contains salt 

Some protein powders can contain processed ingredients that you might not recognize. 

WHAT USERS SAY

This protein powder scores an overall rating of 4.6 stars. Enthusiasts praise it for its taste and texture and find it easy to digest. "I have tried a LOT of different plant-based protein powders and this one wins, hands-down", reports one happy customer. Not everyone likes the flavors and the distinctive sweetness and aftertaste of stevia divide opinion. There are a handful of reports of stomach pains and even, alarmingly, of bugs found in the tub, though these are a tiny minority of reviews.

However, if you're keen on finding a protein powder filled with natural ingredients, the Orgain Organic Protein Powder might just be the one for you.

Founded by a cancer survivor and integrative specialist who wanted to create a product with natural, food-based ingredients, Orgain makes products with ingredients that, whilst perhaps not exactly familiar, are at least recognizable foodstuffs, and the powder is certified organic and non-GMO.

Be aware that the calorie count is 150 per serving which is a little higher than most non-mass-gainer powders and the carbohydrate count is 15g, so it’s not low carb. It contains sea salt so if you’re trying to keep your sodium levels down this may not be for you.


Vital Proteins Collagen Peptides 

Best protein powder: Vital Proteins Collagen

(Image credit: Amazon)

Vital Proteins Collagen Peptides

Best protein powder for low calorie / low carb

Specifications
Protein per serving: 18g
Carbs per serving: 0g
Calories per serving: 70kcal
Protein source: Bovine collagen
Sweetener: N/A
Available flavors: N/A
Reasons to buy
+Low in calories, no carbs +High in collagen 
Reasons to avoid
-Not suitable for vegetarians -Lower in protein than most protein powders 

Beloved of celebs such as Jennifer Aniston, this is principally a food supplement aimed at boosting collagen. 

WHAT USERS SAY

Fans of the product (78% of Amazon reviewers give it five stars) rave about its positive effect on their hair, nails and skin. "Vital Proteins has been a night and day difference", says one. There are a few less satisfied customers who claim to have suffered adverse effects such as skin break-outs and low moods, but these are very much in the minority.

It has the added bonus of providing a decent 18g of protein without any carbohydrates, though, so with only  70 calories per serving, it’s a useful way of adding some easy protein into your diet without acting as a meal in itself. Many users stir it into coffee or other drinks or smoothies.

Unusually for a protein powder, it’s a bovine collagen product, made from cow hides from grass-fed cattle, so obviously isn’t suitable for vegetarians. It is unflavored and really does taste of very little indeed. It doesn’t mix very easily into cold liquids (it stirs easily into hot liquid), so you’ll need a whisk if you’re taking it cold.


Best protein powder: Dymatize

(Image credit: Amazon)

Dymatize Nutrition ISO100

Best protein powder for getting shredded

Specifications
Protein per serving: 25g
Carbs per serving: 3.1g
Calories per serving: 116kcal
Protein source: Whey protein isolate, hydrolyzed whey protein isolate
Sweetener: sucralose, stevia
Available flavors: Gourmet vanilla, smooth banana, strawberry, cookies and cream, gourmet chocolate, fudge brownie, birthday cake, orange ice cream, chocolate peanut, chocolate coconut
Reasons to buy
+High quality ingredients +Large range of flavors 
Reasons to avoid
-Expensive -Tub hard to recycle 

A super-refined protein product, this is the best protein powder for anyone serious about building lean muscle. 

WHAT USERS SAY

With an impressive 4.7 of 5 rating on Amazon, it’s clear that customers rate it highly. Many praise it for not causing digestive discomfort and for the quality of its ingredients. "Dymatize ISO100 Hydrolyzed protein powder means you get a super fast digesting and absorbing whey protein isolate that's had the sugars, carbs and lactose removed from whey concentrate for nothing but pure muscle building protein."

With the protein all coming from whey protein isolate, it’s great for anyone who struggles with whey concentrate, and it’s low in carbohydrates and calories. The inclusion of hydrolyzed whey protein isolate means you absorb the protein even more quickly.

The flavor is good without the temple-aching sweetness you get in some protein powders, and it mixes pretty easily. There’s a large variety of flavors to choose from, though it’s a pity you can’t buy it in sample sizes to try before committing to a large tub - the tub sizes are 900g or 2200g.


Best protein powder: Science in Sport protein powder

(Image credit: Amazon)

Science in Sport Whey Protein

Best protein powder for competitive athletes

Specifications
Protein per serving: 22g
Carbs per serving: 1.8g
Calories per serving: 117kcal
Protein source: Whey protein concentrate, whey protein isolate
Sweetener: sucralose
Available flavors: Chocolate, strawberry, vanilla
Reasons to buy
+Competition friendly +High quality ingredients 
Reasons to avoid
-Limited flavor range -Taste not universally popular 

Anyone who competes in athletic events will know how important it is not to take any banned substances, either deliberately or inadvertently. 

WHAT USERS SAY

Reviews are mostly positive, with no one star reviews on Amazon at all and a very respectable 4.7 star rating. The flavors are not to everyone’s taste and there are a few niggles over the price, but most people rate it as a reliable, straightforward choice. "I would recommend this shake to people who are looking for something simple for recovery purposes."

With this protein powder you can be confident that you’ll not breach any doping regulations. All SiS products are tested under the Informed Choice Certification program against the World Anti-Doping Agency (WADA) list.

Beyond that, it’s a fairly unremarkable product, with a reasonably standard amount of protein per serving and a low carbohydrate content. The flavors are reliable favorites - chocolate, strawberry and vanilla - though we found the taste and texture of the vanilla one somewhat cloying.


Huel Protein Powder 

Best vegan protein powder: huel

(Image credit: Huel)

Huel Protein Powder

Best protein powder for complete nutrition

Specifications
Protein per serving: 20g
Carbs per serving: 3.1g
Calories per serving: 105kcal
Protein source: Pea, faba pea and hemp seed
Sweetener: Sucralose
Available flavors: Vanilla fudge, banana milkshake, chocolate fudge brownie, strawberries and cream, salted caramel, unflavored
Reasons to buy
+Highly nutritious +Good taste 
Reasons to avoid
-Minimum order of two tubs -Relatively expensive 

Huel has come a long way from its early days of the rather grainy and flavorless complete food that it started with. 

WHAT USERS SAY

Reviewers are impressed with the taste - "by far the best tasting protein drink I’ve tried," says one reviewer who normally uses a whey protein powder. The main objection in the reviews is the price, especially when compared to non-plant-based protein powders. At the same time they mostly acknowledge that the nutritional profile and ingredients are of a quality that justifies the price.

Although it still produces the same meal replacement powders (although with an improved texture), it has branched out into flavored products and nutritionally balanced snacks, including this impressive protein powder.

It’s not intended as a meal replacement or for your sole source of nutrition, as it has a lower calorie and carbohydrate profile than would be recommended for a complete meal, but nevertheless it is nutritionally complete high protein snack, containing all 26 recommended vitamins and minerals and meeting the UK and EU recommendations for macro- and micronutrients. If that weren’t impressive enough, it manages to achieve this with purely plant-based ingredients and without compromising on flavor or texture.

Unusually, there’s a minimum order of two tubs, which will be off-putting to some, especially if you’re ordering for the first time and haven’t tasted the protein powder before, and the protein powder doesn’t come in sample sizes.  


Form Performance Protein 

Best protein powder: Form peformance protein

(Image credit: Amazon)

Form Performance Protein

Best plant-based protein powder

Specifications
Protein per serving: 30g
Carbs per serving: 2g
Calories per serving: 150kcal
Protein source: Organic pea, brown rice, pumpkin seed
Sweetener: Stevia, thaumatin
Available flavors: Chocolate peanut, tiramisu, vanilla, banoffee, chocolate hazelnut
Reasons to buy
+High in protein +Sustainable ingredients and packaging 
Reasons to avoid
-Expensive -Few plain flavors 

There’s much to love about this protein powder. 

WHAT USERS SAY

It’s not surprising it’s won awards. Reviewers are enthusiastic about the protein to calorie ratio and the flavors. It’s not to everybody’s taste - there are grumbles from some about the flavor, powdery texture and excessive sweetness - but most of the reviews can be summed up in the words of this reviewer: "The taste is great, it is a quality product with added extras like probiotics, it has responsible eco packaging and whilst it is pricier than others on the market, all of the before mentioned make this worth it."

Packing a powerful protein punch from high quality, plant-based proteins, you might expect the flavor and texture to be disappointing, but you’d be in for a pleasant surprise. The texture is smooth, it’s easy to mix and the flavors are fun (though some plain ones might be nice for more traditional types, and it’s too sweet for some tastes). The addition of curcumin to combat inflammation is a nice touch.

It’s not cheap, but most flavors are available in smaller sample sizes, and you are getting a product that is kind to the environment in every way (the omission of the plastic scoop in favor of amounts suggested in tablespoonfuls - after all, we all have a spoon! - is particularly welcome, and the packaging is compostable).

How to choose the best protein powder for you

The key is to decide what it is you are looking to achieve with your protein powder: do you want to lose weight, develop muscle mass, or perhaps just fuel up for a lengthy workout? Whether you're jumping on a treadmill for a marathon session, or have some home workout ideas to enhance your training, there is a protein powder out there to suit you.   

If you want to bulk up your muscle mass, there are specific protein powders out there that can help you achieve your body goals. Others are more targeted at weight loss, and are low in carbohydrates and calories. Be sure to read the label carefully, because a single serving can contain as little as 70kcal, or a whopping 1,000 kcal. 

"The macronutrient content [the amount of protein, carbohydrates and fats]  depends on why you’re using the product, such as for a meal or post-workout, and your individual protein and energy needs," Stefanski said. 

Related: Black Friday Bowflex deals

Many protein powders are made using whey, which is a dairy by-product. However, there are also plenty of alternatives for vegetarians, and we have even gathered together the best vegan protein powders on offer over the Black Friday period. These vegan powders are often made from peas, hemp seeds and soy.   

"Protein sources are ranked by how well they are absorbed by the intestine and utilized by the body," Stefanski said. "This ranking is known as protein digestibility. Whey protein and other cow’s milk sources rank highest. Animal protein sources such as egg, beef rank higher than plant protein sources such as soy, pea, oat, and rice. While collagen has grown in popularity, it lacks some of the amino acids you’d find in the same amount of whey protein."

Whey protein isolate is more processed, and can be up to 90 percent protein and contains very few traces of fat, cholesterol or lactose. Whey protein made from concentrate can contain anywhere from 29 to 90 percent protein — as the amount of protein decreases, the fat and lactose proportion in the supplement increases. "They have very similar amino acid content with slightly different amounts of carbohydrate and fat," Stefanski said. In general, whey isolate products are more expensive as a result of the extended processing time. 

"If you’re looking for the best quality protein you can see if the protein powder offers a digestibility score called PDCAAS," adds Stefanski. "The higher the value the better the amino acids will be absorbed and used by your body."

Another factor to consider when choosing the best protein powder, is the purity of the product. "In recent years there has been high levels of heavy metals found in certain protein powders," Stefanski adds. "It’s important to research the company’s testing for these contaminants."

If you are in training for a competition or event, you should be careful not to select a powder that includes any banned substances. Informed Sports has a useful list of approved products. 

Once all the serious stuff is accounted for, you shouldn't forget the all-important taste test! Just because you're buying a supplement does not mean you have to compromise on flavor. As many powders come in huge tubs to bulk-buy, it is advisable to sample smaller sachets to ensure you can get behind the taste before committing to a big order. 

The benefits of using the best protein powder

Supplementing with protein can be very helpful if you are an athlete, or if you're recovering from injury, or have taken time away from training. Stefanski explains that it can also be used in moderation to add into other food, for competitors looking to easily increase their protein intake. 

The optimal time to consume protein after a workout session is still widely debated by experts, however research suggests you should aim to intake a high-quality protein within an hour after exercise, according to Stefanski.

As with many areas of nutrition, you need to strike a healthy balance, ensuring your protein intake is accompanied by other nutrients. "For maximal muscle repair and growth, protein should be accompanied by carbohydrates within one to two hours," Stefanski said. "The amount of protein and carbohydrates is dependent on overall energy needs as a person.  If total calories aren’t met, amino acids will be used as an energy source rather than a building block of structures in the body."