Every food supplement sold in the EU must carry a legally defined set of information: full ingredient list by weight, nutrient amounts with %NRV, a stated daily portion, storage and safety warnings, a batch number, and a best-before date. Health claims are restricted to a pre-approved EU register — anything vaguer (“boosts”, “detoxifies”) is marketing, not law.
What must a supplement label legally show in the EU?
Under EU food law, every supplement label must show the product name and category, the full ingredient list in descending order by weight, the recommended daily portion, a warning not to exceed that portion, nutrient amounts with %NRV, storage instructions, a batch or lot number, a best-before date, and the manufacturer’s name and address.
The ingredient list is one of the most useful things on the pack, because ingredients are listed by weight, heaviest first. On a protein powder, that shows whether whey protein is genuinely the main ingredient or whether maltodextrin, flavourings and sweeteners come first. The same logic applies to a joint-support formula or a pre-workout blend.
- Product name and category (e.g. “food supplement”)
- Full ingredient list in descending order of weight
- Recommended daily portion and a warning not to exceed it
- Nutrient amounts per portion, usually shown with %NRV
- Storage conditions and a “keep out of reach of young children” statement
- Batch or lot number and a best-before (or use-by) date
- Name and address of the responsible food business operator
What do the %NRV figures on a label actually mean?
NRV stands for Nutrient Reference Value — an EU-wide benchmark for an average adult’s daily needs, used to help you compare products, not to set a personal dose limit. A 150% NRV vitamin doesn’t mean 150% of what your body specifically needs; some nutrients are perfectly safe well above 100% NRV, while others carry upper limits worth knowing about.
NRVs replaced the older “RDA” figures and give one standard reference across EU food labelling, regardless of age, sex or activity level. They’re useful for comparing two vitamins and minerals products side by side, but they’re a population-level average rather than personal advice. If you take more than one supplement, add up the %NRV for any shared nutrients — a multivitamin and a joint-support formula commonly overlap on vitamin D or calcium.
What’s the difference between serving size and daily dose?
Serving size is the amount in one scoop, capsule or sachet; daily dose is the total the label recommends you take across the day, which may mean two or three servings. Always check both — a “5 g creatine” claim on the front of a tub is meaningless until you know whether that’s per scoop or per day.
This distinction matters most with creatine and protein. The authorised EU claim that creatine increases physical performance in successive bursts of short-term, high intensity exercise applies at a daily intake of 3 g, so check the label’s serving size against that figure. With protein, compare the “per serving” and “per 100 g” columns — a small scoop can look high in protein, but the per-100 g figure gives the fairer picture.
What health claims are supplements actually allowed to make in the EU?
Only claims listed on the EU Register of nutrition and health claims may appear on a label, and they must be worded exactly as authorised, not paraphrased. A claim such as “protein contributes to the maintenance of muscle mass” is legal; anything implying a supplement treats, prevents, or cures a condition is not.
- “Creatine increases physical performance in successive bursts of short-term, high intensity exercise” (at a daily intake of 3 g)
- “Protein contributes to a growth in muscle mass”
- “Protein contributes to the maintenance of muscle mass”
- “Protein contributes to the maintenance of normal bones”
- “Magnesium contributes to the reduction of tiredness and fatigue”
- “Magnesium contributes to normal muscle function”
- “Vitamin C contributes to normal collagen formation for the normal function of bones, cartilage, gums, skin and teeth”
- “Iron contributes to normal formation of red blood cells and haemoglobin”
These claims are also condition-specific: an authorised claim usually comes with a stated minimum intake, and sometimes a particular nutrient source. A vitamins and minerals or amino acid product carrying one of these claims should show the amount needed to reach that effect — if the portion falls short, the claim doesn’t really apply.
Which marketing words on supplement labels should you be sceptical of?
Front-of-pack words like “boosts”, “detoxifies”, “burns fat”, “supercharges”, or “clinically proven” are marketing language, not authorised claims — EU law only permits claims listed on the official register, worded as approved. Treat a bold front-of-pack promise as a prompt to check the small print, not as information in itself.
Words worth treating carefully include “detox”, “fat-burning”, “boosts metabolism”, “miracle”, and “clinically proven” when no study, ingredient, or dose is actually named. This applies especially in the pre-workout and weight-management categories, where the ingredient list and stated dosages usually tell a more modest story.
How do allergen warnings work on sports nutrition labels?
EU law requires 14 major allergens to be emphasised, usually in bold, wherever they appear in an ingredient list, including on supplements. In sports nutrition, milk (whey, casein), soya (lecithin, soy protein isolate), egg, and gluten-containing cereals are the ones to check most often, alongside “may contain” warnings for tree nuts from shared manufacturing lines.
If you have a diagnosed allergy or coeliac disease, the emphasised ingredient list is a legal requirement you can rely on — but “may contain” statements are precautionary, added because of shared production lines, not a test result. Whey-based protein contains milk allergens and typically some residual lactose, even in an isolate, so check isolate or plant-based options individually if lactose intolerance is a concern. Speak to a healthcare professional before trying a new product if you have a diagnosed allergy or relevant medical condition.
Frequently asked questions
These quick answers cover the questions readers most often have about supplement labels and EU rules: whether supplements are needed alongside a balanced diet, whether a higher %NRV is automatically better, and what to do if a label’s wording looks exaggerated. Each answer reflects EU food law rather than marketing claims made by any individual brand.
Do I need to take a supplement if my diet is already balanced?
Not necessarily. EU labels are legally required to state that a supplement should not replace a varied, balanced diet, and that’s accurate: whole foods provide nutrients alongside fibre and other compounds a powder doesn’t replicate. Supplements are most useful for filling a specific, identified gap — such as protein around training — rather than a blanket daily habit.
Is a higher %NRV always better?
No. Higher %NRV just means more of that nutrient per serving, not a better or safer product. Fat-soluble vitamins (A, D, E, K) and minerals like zinc or iron have tolerable upper intake levels, and combining several supplements with overlapping ingredients can push totals well past what’s needed. Add up shared nutrients across products rather than judging each label alone.
What should I do if a label seems to make an exaggerated claim?
Compare the claim’s wording against the EU Register of nutrition and health claims, or simply be sceptical of language implying a cure, prevention, or dramatic transformation. If you have a health condition, are pregnant or breastfeeding, or take medication, check with a doctor or pharmacist before starting any new supplement rather than relying on front-of-pack marketing.
