Not All Protein Powders Are Created Equal

Whey, plant-based proteins, additives and what to look for before you buy.

What's Really in Your Protein Powder?

Protein powders come in just about every flavour imaginable.

Chocolate brownie. Salted caramel. Cookies and cream. Chocolate hazelnut.

Some have one or two ingredients. Others have a list that takes longer to read than the workout itself.

But does that make some powders better than others?

Yes, there are genuine differences — although a longer ingredient list doesn't automatically mean an inferior or unhealthy product.

The important things are the protein source, nutritional quality, ingredients, digestive tolerance and whether the product actually suits your needs.

1. Whey Protein: What's the Difference?

Whey is a protein derived from milk.

It contains all nine essential amino acids and is particularly rich in leucine, an amino acid involved in stimulating muscle protein synthesis.

There are three main forms.

TypeWhat you need to knowWhey concentrateUsually around 70–80% protein by weight. Contains some lactose and fat. Often good value.Whey isolateMore highly filtered, typically higher in protein and considerably lower in lactose.Whey hydrolysatePartially broken down protein, often more expensive, without clear extra benefits for most people.

All three can support muscle growth when combined with appropriate resistance training.

What if dairy doesn't agree with you?

Some people find whey protein causes bloating, wind or digestive discomfort.

If lactose intolerance is the problem, whey isolate may be better tolerated because it contains much less lactose.

However, whey is still derived from milk.

If you have a cow's milk protein allergy, whey concentrate and whey isolate are both unsuitable.

And if you're unsure whether dairy is causing your symptoms, it's worth investigating rather than assuming every reaction is lactose intolerance.

2. What About Plant-Based Protein?

Plant-based powders can be excellent alternatives.

Common sources include:

Pea protein
Soya protein
Brown rice protein
Pumpkin seed protein
Blends of different plant proteins

Some plant proteins contain lower amounts of particular essential amino acids than whey, but combining protein sources can improve the amino acid profile.

Soya is already considered a complete protein.

And well-formulated plant proteins can support muscle growth effectively, especially when total daily protein intake is sufficient.

You absolutely don't need animal protein to build muscle.

Plant-based powders can be useful for vegans, vegetarians and people who prefer to avoid dairy.

They may, however, have a different taste or texture from whey, which is largely a matter of personal preference.

3. What About All Those Additives?

Here's where reading the ingredients becomes interesting.

Depending on the product, you may find:

IngredientWhy it's includedSweeteners such as sucralose or steviaTo provide sweetness without much added sugarFlavouringsTo create chocolate, vanilla or other flavoursLecithinTo help the powder mix into liquidsXanthan or guar gumTo improve thickness and textureDigestive enzymesMarketed to support digestionAdded vitamins and mineralsTo enhance the nutritional profile

Are these ingredients dangerous?

Not inherently.

Approved food additives undergo safety assessment, and there isn't good evidence that everyone needs to avoid protein powders containing sweeteners or emulsifiers.

However, some people experience digestive discomfort with particular ingredients, especially certain sugar alcohols or thickeners.

Others simply prefer fewer additives or less sweetness.

A simple ingredient list can make it easier to understand what you're consuming.

But a powder with flavourings isn't automatically unhealthy, and an organic powder isn't automatically better for building muscle.

4. Two Protein Brands I Personally Like

There are many perfectly good products available. These are two brands I personally use or recommend.

The Organic Protein Company — Pure Unflavoured Organic Whey Protein

This is the unflavoured whey protein I use.

I particularly like the simplicity of the formulation, without added sweeteners or flavourings.

It's versatile because I can add it to porridge, yoghurt, smoothies or another protein powder without changing the flavour too much.

It's whey concentrate, so it does contain lactose and may not be suitable for someone who struggles with dairy.

Form Nutrition — Plant-Based Protein

Form Nutrition offers a range of plant-based protein powders, including flavoured options.

My personal favourite is Chocolate Hazelnut.

I really enjoy the flavour, although I find it a little too sweet on its own.

My solution? I mix it with my unflavoured whey from The Organic Protein Company.

That gives me the chocolate-hazelnut flavour I enjoy, but tones down the sweetness.

Of course, once I mix it with whey, my shake is no longer dairy-free or vegan!

For someone avoiding dairy entirely, Form's plant-based products can be a useful alternative without adding whey.

It's worth checking the particular Form product you choose, as the ingredients, protein content, sweeteners and other additions vary across the range.

These are my personal preferences, not paid endorsements or claims that they're the best powders for everyone.

5. What About Gluten?

Pure whey protein is naturally gluten-free, as are many unflavoured plant proteins.

However, flavoured products can contain additional ingredients, and manufacturing cross-contamination is possible.

If you have coeliac disease or need to avoid gluten, choose a product clearly labelled gluten-free.

In the UK, products carrying that claim must meet the legal limit of no more than 20 parts per million of gluten.

Never assume a product is gluten-free simply because its main protein source is.

6. Don't Forget the Calories!

This deserves its own section.

Protein shakes are often marketed as healthy, nutritious and fitness-friendly.

And they can be.

But healthy doesn't mean calorie-free.

A serving of protein powder might contain approximately 100–150 calories, depending on the product and portion.

Add milk, fruit, oats, nut butter or other ingredients, and a shake can quickly become a substantial source of energy.

If you're trying to lose weight or monitor your calorie intake, this matters.

You might not feel as though you've eaten anything particularly substantial because you've consumed it as a drink.

And liquid calories don't always produce the same feeling of fullness as solid food.

So you may find yourself drinking a 400-calorie smoothie and then eating your usual lunch anyway.

There's nothing wrong with that if it fits your needs.

But it's worth being aware of.

If you're tracking your food, track your drinks too.

And remember, if you mix two different protein powders together, both contribute protein and calories.

7. What Should You Look For When Buying?

Before being persuaded by the packaging, ask yourself:

How much protein does it provide? Look at protein per serving, not just the scoop size.
What's the source? Whey, soya, pea or a plant blend?
How much does it cost per serving? Expensive doesn't necessarily mean better.
What else is in it? Check sweeteners, flavourings, added nutrients and other ingredients.
Does it suit my digestion? Dairy and certain additives may cause discomfort for some people.
Is it suitable for my dietary needs? Check gluten, milk, soya and other allergens.
Has it been quality tested? Reputable manufacturing and independent testing provide reassurance.

If you're an athlete subject to anti-doping rules, choosing a batch-tested product is particularly important.

A Little Self-Reflection

Am I buying protein powder because I actually need additional protein?
Do I understand the difference between whey and plant-based protein?
Do I tolerate dairy well?
Am I choosing a product because of its ingredients or because of the marketing?
Do I prefer a simple unflavoured powder or something more convenient and tasty?
Have I checked the calories in my shake, including everything I add to it?
Could a less expensive product meet my needs just as well?

A Final Thought

Protein powders can be extremely useful, particularly when life is busy or you're struggling to meet your protein needs through food.

But there are real differences between products.

Whey and plant-based powders have different characteristics. Some contain sweeteners and flavourings; others are very simple. Some people tolerate dairy well; others don't.

And even the healthiest-looking protein shake still contributes calories.

The best protein powder isn't necessarily the most expensive, the most fashionable or the one with the longest list of promises.

It's the one that suits your needs, your digestion, your preferences and your budget.

And if you don't need one at all? That's perfectly fine too.

Something to think about, don't you think?

The Science Behind This Sheet

Jäger et al. (2017), Journal of the International Society of Sports Nutrition — Protein quality, amino acids and resistance training.
Morton et al. (2018), British Journal of Sports Medicine — Protein supplementation and gains in strength and muscle mass.
British Nutrition Foundation — Dietary protein and protein supplements.
Coeliac UK — Gluten-free labelling and cross-contamination guidance.
The Organic Protein Company and Form Nutrition — Manufacturer information for current product ingredients, allergens and nutritional values. Always check the packaging for the latest formulation.

FUSION FIT
MOVE WELL • EAT WELL • LIVE WELL

This handout provides general nutrition education rather than individual medical or dietetic advice. If you have a food allergy, kidney disease or other condition affecting your nutritional requirements, seek appropriate professional guidance.