Here's a challenge. Go to your kitchen, pick up your current protein powder, and turn it around. Read the ingredients list. All of it.
If it's a typical whey or vegan protein, you'll find somewhere between ten and twenty-five ingredients. Some of them are recognisable. Most aren't. A few sound like they belong in a chemistry textbook rather than something you're putting into your body every day.
Now ask yourself: do you know what each of those ingredients is? Do you know why it's there? And do you know whether you actually want to be consuming it?
Let's go through the most common additives in protein powders and look at what each one does, why manufacturers use it, and what the alternatives are.
The Common Additives
Maltodextrin
The name sounds complicated, but it tells you exactly what this ingredient is. "Malt" refers to maltose — a sugar formed when starch is broken down. "Dextrin" is a type of short-chain carbohydrate produced by partially breaking apart starch molecules. So maltodextrin is literally a partially broken-down starch — usually from corn, wheat, or potato — that sits somewhere between a whole starch and a simple sugar. It's highly processed, water-soluble, and has virtually no flavour of its own.
In protein powders, maltodextrin acts as a carrier. Artificial flavourings, sweeteners, and added vitamins are used in such small quantities that they wouldn't disperse evenly through the powder on their own. Maltodextrin dissolves easily and blends without affecting taste, so it's used to deliver those synthetic ingredients throughout the product.
Think of it as an additive for the additives. It's not there for you — it's there to make the other synthetic ingredients work. When your protein powder uses real food for flavour, you don't need a carrier to distribute it.
Sucralose (E955)
Sucralose is an artificial sweetener approximately 600 times sweeter than sugar. It was discovered in 1976 during research into new insecticide compounds, which is an odd origin story for something you drink every morning.
It's the most common sweetener in protein powders because it delivers intense sweetness at virtually zero calories. However, some research has raised questions about its effects on gut bacteria and insulin response, and many people find it leaves a distinct chemical aftertaste.
Acesulfame Potassium (E950)
Often listed as Ace-K on labels, this is another artificial sweetener. It's frequently paired with sucralose because it helps mask the metallic aftertaste that sucralose can produce. Yes — they're adding a second artificial sweetener to cover for the first one.
Silicon Dioxide (E551)
Listed as an anti-caking agent, silicon dioxide stops the powder from clumping during storage. It's essentially a very fine synthetic silica — the same base compound found in sand, produced industrially for food use. It's generally considered safe, but it's worth asking: if your protein needs anti-caking agents to stay usable, what does that tell you about the base product?
Xanthan Gum (E415)
A thickening agent produced by bacterial fermentation. In protein powders, it's used to improve the texture and give the shake a smoother, thicker mouthfeel. Without it, many whey proteins would be thin and watery, because the actual protein isolate has no natural body or texture of its own.
Soy Lecithin (E322)
An emulsifier extracted from soybeans, used to help the powder mix with liquid without separating. It's an industrial additive that solves a problem created by the manufacturing process — when you strip protein away from its natural food matrix, it doesn't mix with water very well on its own.
Artificial Flavourings
Most protein powders use artificial flavourings to create their taste profiles. Cookies and cream. Birthday cake. Strawberry cheesecake. These flavours don't come from cookies, cake, or cheesecake. They come from synthetic flavour compounds designed to trick your palate into thinking you're eating something you're not. They're often the very reason maltodextrin is in the product — acting as the carrier that gets these synthetic compounds dispersed through the powder.
Cellulose Gum (E466)
Another thickener, used alongside or instead of xanthan gum. It's derived from plant cell walls but heavily processed into a semi-synthetic additive. Its job is the same: to make a stripped-down isolate feel like it has substance.
The Pattern
Read through that list and a pattern emerges. Most of these additives exist to solve problems created by the manufacturing process itself.
When you isolate protein from its natural food source, you strip away the fibre that provides natural texture. You remove the fats that help the powder mix smoothly. You take out the natural sugars that provide sweetness. You discard the minerals and vitamins that came with the original ingredient.
Then you have to add it all back. Gums (E415, E466) for texture. Emulsifiers (E322) for mixability. Sweeteners (E955, E950) for taste. Anti-caking agents (E551) for shelf stability. Artificial flavourings to make it palatable. And maltodextrin to carry those flavourings and sweeteners through the product.
The end result is a product that started as food, was stripped down to a single macronutrient, and then rebuilt with industrial additives to make it functional again. The ingredients list can become longer because additional components are added to improve taste, texture, stability or mixability after processing.
The Naming Game
Here's something most people don't realise. Under EU food labelling regulations, manufacturers can choose how they list these additives on the back of pack. They can use the E number, or they can use the common name. It's their call.
Almost every protein powder on the market uses the common name. And it's not hard to see why.
"Sucralose" sounds vaguely scientific but broadly acceptable. "E955" makes you stop and think. "Xanthan gum" sounds like an ingredient. "E415" sounds like a chemical. "Silicon dioxide" might slip past you. "E551" won't.
Now imagine a typical whey protein label rewritten with E numbers instead of names. Whey protein concentrate, maltodextrin, E955, E950, E415, E466, E322, E551, artificial flavourings. That's the same product, the same ingredients, the same shake you've been drinking every morning. It just looks very different when you see it written that way.
Most manufacturers choose to list additives using their common names rather than E numbers. That's why they choose the names. A label full of E numbers would probably make even the most loyal customer think twice about what's really in their so-called "clean" protein shake.
Protein & Fibre doesn't have this problem. You can write our ingredients list any way you like — ground sunflower kernels, ground dates, cocoa powder, sea salt — and it reads exactly the same. No E numbers to disclose. No names to hide behind. Just food.
The Four-Ingredient Alternative
Protein & Fibre takes a different approach. Instead of isolating protein and then adding ingredients to compensate, we start with a whole food and keep it whole.
Every flavour is made from four ingredients:
Ground sunflower kernels — the base.
Whole sunflower kernels that have been gently cold-pressed to reduce excess oil, then finely ground. No solvents, no chemical extraction. The protein, fibre, healthy fats, and natural nutrients stay intact. This is the ingredient that provides 21–23g of protein and 8–10g of fibre per serving.
Ground dates — the sweetener.
Whole dried dates, milled into a fine powder. No sucralose (E955), no stevia, no artificial sweeteners of any kind. Just a whole food that provides natural sweetness alongside its own fibre and nutrients. The 7g of sugar per serving comes entirely from here.
Flavour ingredient — the taste.
Real cocoa powder in Dark Cocoa & Sea Salt. Ground coffee in Mocha. Ceylon cinnamon in Cinnamon. Real vanilla in Vanilla Bean. Whatever's on the label is what's in the bag. No synthetic flavour compounds. No maltodextrin carriers needed — because when your flavour comes from actual food, it doesn't need help dispersing.
Sea salt — the balance.
A pinch of sea salt to round out the flavour. That's it.
No gums, because the natural fibre provides texture. No emulsifiers, because the naturally occurring lecithin in sunflower kernels handles that. No artificial sweeteners, because dates do the job. No anti-caking agents, because the product doesn't need them. No flavourings, because the real ingredients provide the flavour. No maltodextrin, because there are no synthetic micro-ingredients that need carrying.
Four ingredients. Each one there for a reason. Each one a recognisable food.
Why This Matters
The ingredients list on your protein powder isn't just a regulatory requirement. It's a window into how the product was made and what the manufacturer had to do to make it work.
A long list of additives tells you the base ingredient was processed aggressively and needed extensive modification to become drinkable. A short list of recognisable foods tells you the base ingredient was handled carefully enough that it didn't need fixing.
This isn't about fear. Silicon dioxide (E551) isn't going to harm you. Xanthan gum (E415) is perfectly safe. The question isn't whether these additives are dangerous. The question is whether they're necessary.
When you start with a whole-food ingredient that naturally contains protein, fibre, fat, and micronutrients, you don't need to rebuild the product with additives. The food does the work on its own.
Your Turn
Pick up your protein powder. Count the ingredients. Look up the ones you don't recognise — and the E numbers next to them. Then decide whether you're comfortable consuming them every day, or whether you'd rather drink something where you can name and understand every single ingredient on the label.
Four ingredients. Ground sunflower kernels, dates, a flavour ingredient, and sea salt.
That's the whole list.
Frequently Asked Questions
Are protein powder additives actually harmful? Most common protein powder additives are approved for use and generally considered safe. The question isn't usually about safety in isolation — it's about whether you need them at all. When protein is made from whole food rather than a stripped-down isolate, most of these additives become unnecessary.
Why do protein powders have so many ingredients? Because the manufacturing process removes most of the fibre, fats and carbohydrates, leaving primarily protein. Once you remove the natural fibre, fats, and sugars from the base ingredient, you need to add gums (E415, E466), emulsifiers (E322), sweeteners (E955, E950), and flavourings to make the product taste acceptable and mix properly — plus carriers like maltodextrin to help those micro-ingredients disperse evenly through the powder.
Is sucralose in protein powder bad for you? Sucralose (E955) is approved for use in food products. However, some research has explored its potential effects on gut bacteria and insulin response. Many people also find it leaves a chemical aftertaste. Whether you choose to consume it regularly is a personal decision.
What does maltodextrin actually do in protein powder? It's a carrier. Maltodextrin is a partially broken-down starch used to deliver and disperse other micro-ingredients — artificial flavourings, sweeteners, vitamins — evenly through the powder. Without it, those additives would clump rather than distribute. It's a processing aid, and a sign that the product relies on synthetic ingredients that need help getting into your shake.
What are the four ingredients in Protein & Fibre? Ground sunflower kernels, ground dates, a real flavour ingredient (cocoa powder, ground coffee, Ceylon cinnamon, or vanilla depending on flavour), and sea salt. Every ingredient is a whole food you could buy in a shop and recognise on sight.
Why doesn't Protein & Fibre need emulsifiers or gums? Because the base ingredient — ground sunflower kernels — is a whole food that retains its natural fibre and fats. Sunflower kernels naturally contain phospholipids, which contribute to how the powder blends when shaken, and the intrinsic fibre gives the shake body and texture without added gums.
Can manufacturers really choose whether to show E numbers or names? Yes. Under EU food labelling regulations, manufacturers can list additives by their E number or their common name. Almost all protein powder brands choose the common name. A label reading E955, E950, E415, E466, E322 and E551 would make the formulation look far more processed and technical than it does when those same ingredients are written using their common names. The names are friendlier. The product is the same.