Supplements in Europe vs. the US: What's Different and Why It Matters
If you’re reading supplement advice written for a US audience and you live in Europe, you’re getting advice for a different regulatory world. Not dramatically different — but different enough to matter for what’s on your shelf, what doses are legal, and what your doctor means when they say “that’s not available here.”
This guide covers the practical differences for European readers (and curious Americans).
The regulators: FDA vs. EFSA
United States (FDA): supplements are regulated as a food category under DSHEA (1994). Manufacturers don’t need pre-approval; the FDA steps in only after problems appear. This is why new ingredients appear on US shelves faster — and why quality varies so wildly.
European Union (EFSA + national authorities): supplements fall under the Food Supplements Directive (2002/46/EC). The approach is precautionary — ingredients must be demonstrably safe before market, not after. National authorities (BfR in Germany, ANSES in France, FSA in the UK post-Brexit) can add their own restrictions.
Practical impact: European products are generally more consistent in quality; US products have more variety and often higher doses.
The five differences that actually affect you
1. Melatonin: prescription vs. over-the-counter
This is the biggest practical shock for travelers:
| Country | Melatonin status |
|---|---|
| USA | Sold freely at 5–10 mg (often 10x the effective dose) |
| UK | Legal as a supplement, but only in ≤1 mg doses without prescription |
| Germany | Prescription-only above 0.5 mg — effectively unavailable OTC |
| France | Prescription-only (any dose) |
| Netherlands | Available as supplement up to 0.9 mg |
Our melatonin dosing guide explains why 0.5–1 mg is the correct dose anyway — European readers may actually be getting the better deal.
2. Banned or restricted ingredients
Several common US supplement ingredients are banned or restricted in the EU:
- DMAA (stimulant) — banned in EU, still found in US pre-workouts
- High-dose B6 (>10 mg requires registration in some EU countries)
- Kava — restricted in UK, Germany, France (liver concerns); available in US
- Certain herbal extracts — passionflower and valerian have maximum-dose rules in Germany
3. Dose ceilings
The EU sets maximum permitted levels for vitamins and minerals in supplements. The US has no such caps. This means:
- US magnesium bottles might contain 500+ mg per serving; EU versions typically cap at 250–375 mg
- US vitamin D often comes at 5,000 IU; EU versions at 1,000–2,000 IU
- The EU doses are actually closer to the research-supported ranges on our guides
4. Health claims: what labels can say
- US: structure/function claims allowed (“supports restful sleep”) with a disclaimer
- EU: only EFSA-approved claims can appear; many are rejected (the EU has approved only ~250 health claims vs. thousands used in the US)
This is why European supplement labels read more conservatively — and why sites like ours, which explain the research rather than repeat label claims, serve European readers particularly well.
5. Online ordering: the border reality
- UK post-Brexit: supplement imports from EU face new checks; US imports may be seized if they contain non-UK-approved doses
- EU ordering from US sites: customs may block packages containing restricted doses or ingredients
- iHerb and Amazon local: both operate European warehouses with EU-compliant formulations — often the safest ordering route
What this means for European readers using this site
Every dose and recommendation on Naturally Restful is calibrated to the research, which typically aligns closer to EU rules than US shelf standards:
- Magnesium glycinate at 200–400 mg elemental → within EU limits
- Melatonin at 0.5–1 mg → matches UK/NL supplement doses
- Ashwagandha at 300–600 mg → available in EU without restriction
If a product we mention isn’t available in your country, the European version typically exists at the correct dose — ask your pharmacist for the “sensible” version, not the American mega-dose.
Bottom line
European supplement regulation is stricter, doses are lower, and labels are more honest — all of which aligns with the evidence-first approach of this site. The main practical differences: melatonin access varies wildly, some US ingredients are unavailable, and ordering across borders requires awareness. The research we cite doesn’t change; just check your local shelf.