The label of a high-protein product says more than the number of grams of protein printed in large font on the front of the package - what matters is the order of ingredients, portion size and whether protein is the main source of energy at all. In 2026, EU law defines a "high-protein product" as one in which protein provides a minimum of 20% of the energy value, and a "protein source" requires only 12% - the difference between these thresholds explains why two products with the same slogan on the packaging can have completely different compositions.
- The 'high-protein' label in 2026 requires at least 20% of energy from protein according to EU law - the 'source of protein' is only 12%.
- Check the protein weight per serving, not per 100 g - this is the most common marketing trick on the market.
- SUPERSONIC Smart Meal declares 32 g of protein per serving and provides it directly, without conversions.
- The order of ingredients on the INCI-like list says more than the slogan on the front of the packaging.
- Sugar under 5g per serving is a reasonable threshold when choosing a ready meal or protein shake.
Why it matters
The words "high protein", "protein" or "rich in protein" are not protected as strictly as, for example, "bio" or "organic" - but they have their own legal thresholds, which in 2026 are still valid throughout the EU. A buyer who does not know these thresholds pays for marketing, not for real nutritional value.
This is especially important when SUPERSONIC Smart Meal and similar ready-made meals, where the portion and protein weight determine whether the product actually replaces a full meal or is just a snack with the note "protein".
How to read labels of high-protein products step by step
Check the label in this order - each step eliminates a different type of marketing trick:
- Find the serving weight – the label may give protein per 100 g, but you eat a portion of 30 g, 200 ml or 60 g. Always calculate the actual portion you consume.
- Check the ingredient list – ingredients are listed in descending order by weight. If whey protein is third and the first two are sugar and flour, the product is not what it seems.
- Identify the directly named protein source – "whey protein isolate", "pea protein concentrate", "fish collagen" are specific names. The word "protein" itself, without any specification, should arouse caution.
- Compare protein with carbohydrates and sugar – a product with 20 g of protein and 25 g of sugar per serving is not a functional dietary support, but a dessert with added protein.
- Verify %RWS (reference intake value) – the percentage next to the weight shows what share of the daily requirement is covered by the portion, but it refers to an average diet of 2000 kcal, not to your demand.
20% of energy from protein: legal threshold for the term "high protein"
EC Regulation 1924/2006 specifies that a product can be labeled "high protein" if at least 20% of its energy value comes from protein. This number is independent of how many grams of protein appear on the packaging in absolute numbers - what matters is the proportion to total calories.
Practice test: take the calories from the label, multiply the grams of protein by 4 (kcal per gram of protein), divide by the total calories per serving. If the result is lower than 0.20, the slogan "high protein" on the packaging is far-fetched, even if technically acceptable with a different interpretation of the recipe.
12% of energy from protein: threshold for the term "protein source"
The second, more lenient threshold is "source of protein" - 12% of energy from protein is enough for a product to carry such a label. This is a level that is met by many more products on the market, including those that the consumer would consider a dessert or snack rather than a functional meal.
| Slogan on the label | Required threshold | What does this mean in practice? |
|---|---|---|
| Protein source | min. 12% energy from protein | Low threshold, meets many food products |
| High protein | min. 20% energy from protein | A higher standard, closer to real dietary support |
| No threshold declaration | no legal requirement | Requires manual conversion from the label |
Why protein content varies between products
- Type of protein source – whey isolate has a different amino acid profile and a different production price than soy concentrate or collagen, which affects the declared weight.
- Portion size determined by the manufacturer – a 25 g portion and a 60 g portion of the same product give completely different numbers on the label per package.
- Addition of thickening substances – gums and starches increase the weight of the product without increasing the nutritional value, which dilutes the real protein content.
- Product format – powder, ready-made shake or bar have different caloric density, so the same 20 g of protein look different in the context of the entire portion.
- Purpose of the formula – a product intended for building muscle mass (as Whey 360 Grass Fed protein supplement) differs in its assumptions from a product intended for reduction, where low caloric value is also important.
- Protein determination method – some producers calculate nitrogen using the Kjeldahl method, which in the case of some plant raw materials overestimates the result in relation to the real bioavailability.
Does "vegetable protein" mean the same as whey on the label?
No - "vegetable protein" and "whey" are two different amino acid profiles, and the label treats them as equivalent only in terms of weight, not quality. Vegetable protein (pea, rice, hemp) often requires combining several sources to match the amino acid completeness of whey, so it is worth checking whether the product combines several plant isolates or is based on one.
What does the %RWS symbol next to protein on the label mean?
%RWS (reference intake value) shows what percentage of the average daily protein requirement is covered by one serving of the product, counting from the standard of 50 g of protein per day for a 2,000 kcal diet. This value is indicative - a person training strength usually needs more than 50 g per day, so the % RWS on the label underestimates the real needs.
Is it worth counting sugar together with protein when choosing a product?
Yes - a product with high protein content and high sugar content (over 10 g per serving) rarely supports fat loss goals, even if the label boasts "high protein". Checking both values together, rather than separately, gives you a more complete picture of what actually ends up on your plate.
When choosing between products, it is also worth taking a look at the guide on how to choose protein supplement for training purposes – the label is the first filter, but the training goal narrows the selection further. If the product is a bar, the text about how to choose a sugar-free protein bar – a category where labels can be particularly misleading.
FAQ
How to read labels of high-protein products in 2026?
Check the protein weight per portion (not per 100 g), the order of ingredients on the list and the percentage of energy from protein - a 'high-protein' product requires a minimum of 20% of energy from protein according to EU law. Only these three elements together give a full picture of the product quality.
Are 'high protein' and 'protein source' the same thing?
No, 'protein source' requires only 12% of energy from protein, and 'high protein' requires as much as 20%. The difference in thresholds means that products with a 'protein source' may have significantly less protein than the label suggests.
How much protein should a good replacement meal have?
A good replacement meal usually provides over 25-30 g of protein per serving - SUPERSONIC Smart Meal declares 32 g per serving with less than 200 kcal. Below this level, the product can hardly be called a full-value meal replacement.
Is plant protein worse than whey according to the label?
The label does not differentiate the amino acid quality, so the weight of plant protein and whey looks the same despite differences in the amino acid profile. It's worth checking if the plant-based product combines several protein sources for better completeness.
What does high sugar content mean on a protein product label?
Sugar above 10g per serving in a product advertised as high-protein usually represents a compromise between taste and nutritional value. A reasonable threshold for comparing products is less than 5 g of sugar per serving.
Is the % RWS for protein on the label reliable?
% RWS is calculated from the average demand of 50 g of protein per day on a 2,000 kcal diet, so for physically active people this value is underestimated. Treat %RWS as a reference point, not as a real coverage of your needs.
How to check if protein is the main ingredient and not an addition?
Check the place of the protein source on the list of ingredients - the ingredients are arranged in descending order by weight, so protein in the third or fourth place suggests that it is an additive, not the base of the product. The first two or three places on the list should include a named protein source for products advertised as high-protein.
One thing worth remembering
Products with the "high protein" label and the same protein weight may have a completely different calorie content per serving - two products with 20 g of protein each may differ by 150 kcal per serving, if one is based on fat and sugar as a flavor carrier, and the other on fiber. In 2026, it is the caloric value per gram of protein, not the weight itself, that best shows which product actually supports a dietary goal.
Related guides
- How to increase the amount of protein in your diet without counting calories
- High-protein products for vegetarians
- The best protein supplement for beginners
- Ready-made high-protein meals for busy people
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