Have you ever browsed the internet or watched popular US podcasts and become interested in a dietary supplement promising incredible results, only to find that when you start looking for it in Europe, it's almost an impossible mission? This is no coincidence. It's the result of two completely different approaches to consumer safety regarding supplements.

This article is a straightforward explanation of the essential differences, revealing how the complex regulation of dietary supplements works in different countries around the world.

We will explore why the European supplement market is so strict, while the US market is much more liberal, and why the path to the European market for new, innovative ingredients is so complex and winding.

Briefly and clearly: essential differences

• Two different approaches. The European Union (EU) adheres to the "safety first" principle. This means that any supplement or its ingredient must prove its safety and efficacy before entering the market. In contrast, the US places greater responsibility on the manufacturer, and authorities only intervene when consumers encounter problems.
• European "guardian" versus US "monitor". The main institutions are the European Food Safety Authority (EFSA) and the US Food and Drug Administration (FDA). EFSA acts as an extremely strict guardian, meticulously checking every claim. Meanwhile, the FDA does not control dietary supplements as strictly and acts more as a monitor, responding to consumer complaints.
• "Novel food" rule. In Europe, there is a strict rule for innovative substances — if an ingredient was not widely consumed before 1997, it is considered a "novel food." To sell it as a dietary supplement, a long and expensive safety verification process must be undergone.
• NMN example. Nicotinamide mononucleotide (NMN), popularized in the US as an advanced cellular supplement, is a perfect example — in the US, it was freely sold, while in the EU, its sale is prohibited because it is considered an unapproved "novel food."

The tangled world of regulation – simply explained

Our goal is to rephrase complex legislation into understandable language. We want you to know why you see certain products on shelves and not others, and perhaps why you often miss out on substances you heard about on popular podcasts (such as Huberman Lab or Joe Rogan Experience).

European Union: the strict bouncer at the club entrance

Imagine the dietary supplement market as a nightclub. The European Union is that strict bouncer who meticulously checks everyone's ID at the entrance. If there's even the slightest doubt about the authenticity of the documents, you won't get in.

EU control of dietary supplements works similarly. Every health claim (e.g., "vitamin C contributes to the normal function of the immune system") must be approved by the European Food Safety Authority (EFSA). For a claim to be permitted, the manufacturer must provide strong scientific evidence, usually expensive clinical trials with humans. Only if the evidence is ironclad is the claim approved. Such a process can take several years and is usually only accessible to large corporations.

US approach: freedom and manufacturer responsibility

If we use the same nightclub analogy, then the US would be the club where the bouncer lets everyone in without extensive checks. However, inside there are security guards (FDA) who monitor the situation. If someone starts misbehaving, they are escorted out.

Under the DSHEA Act of 1994, all responsibility for product safety in the US rests with the manufacturer. The FDA does not pre-approve supplements or their claims about effects. Manufacturers can freely claim that a product "supports smooth digestion," provided they state that the FDA has not evaluated this claim. The FDA intervenes only when it receives reports that a product is unsafe or its advertising is false.

EFSA versus FDA: two different guardians

"Novel food" status: why fewer innovations in Europe?

An even greater barrier than claim regulation is the "novel food" rule.

The novel food status is easiest to understand this way: if your great-grandparents did not consume a certain plant or substance, the European Union wants to be sure that this new product is safe. Any ingredient that was not widely consumed in the EU before 1997 is considered a "novel food." Substances with this status cannot be supplied to the EU market.

A good illustrative example is the highly interesting substance NMN (nicotinamide mononucleotide). This substance cannot be sold as a dietary supplement because it has novel food status in the EU market.

For such a substance to become legally available and reach consumers on store shelves, it needs to go through a long and expensive authorization process and prove to EFSA that the product is completely safe. This deters many manufacturers from bringing innovations to the European market.

Prohibited claims: what cannot be said in Europe?

The EU is very strict about marketing promises. If a claim is not on the official EFSA-approved list, it cannot be used. Here are some examples of popular but illegal claims in the EU market:

• "Stops the biological clock." While science investigates cellular processes, there are currently no supplements whose ability to stop natural processes has been confirmed according to strict EFSA requirements.
• "Strengthens the body's defenses." EFSA allows saying that vitamin C "contributes to the normal function of the immune system," but not that it will artificially increase natural resistance. Only maintaining a normal state is allowed.
• "Cognitive enhancers." Claims like "improves memory" or "increases concentration" for healthy people are not approved because EFSA considers existing research-based evidence insufficient. It is allowed to say "contributes to normal cognitive function."
• "Body cleansing." A healthy person's liver and kidneys perform filtration functions perfectly well on their own. EFSA has not confirmed that any supplement can artificially improve this process.

Shipping from the US: why your shipment might get stuck at customs?

Some consumers try to circumvent EU rules by ordering supplements from popular US platforms. However, doing so is risky.

Every shipment from a non-EU country is an import. Customs officers have the right to inspect it. If the product contains ingredients prohibited in the EU (e.g., unapproved "novel foods" such as NMN or huperzine A) or components with prescription drug status (e.g., melatonin in high doses), the shipment will be detained, confiscated, or returned to the sender. This will not only result in monetary loss but may also lead to administrative procedures.

By purchasing products from EU-registered stores or pharmacies, you can be sure that the supplements you choose for your diet will be legal, safe, and meet the highest standards.

Summary: safety versus speed of innovation

It is evident that the EU and the US have chosen different paths in supplement regulation.

• Europe prioritizes absolute consumer safety, even if it means slowing down the pace of innovation.
• The US grants more freedom to the market and the consumer but also places greater responsibility on the buyer to choose what is safe and effective.

Knowing these market differences makes it much easier to make informed and safe decisions in the global dietary supplement market.

Frequently Asked Questions

• Why does EU supplement approval take so long?
  Because the European Food Safety Authority (EFSA) requires very strong scientific evidence (often clinical trials in humans) to ensure the product's safety and efficacy. Quality is always more important than speed here.
• Will my shipment from the US always be detained?
  Not necessarily. Customs inspects shipments on a selective basis. However, if you purchase a product that clearly violates EU rules (e.g., contains ingredients not approved in the EU), the risk of the shipment being detained is very high.
• What does "FDA approved" on a US supplement mean?
  Essentially, this is a misleading term. The FDA does not pre-approve the efficacy of dietary supplements. At best, it might mean that the factory where the supplement is produced meets FDA manufacturing standards, but this does not guarantee the product's effect.
• So are EU supplements better than US ones?
  Not necessarily. EU regulation ensures that claims on the label are scientifically substantiated and ingredients are safe for consumption. However, this does not mean that there are no quality and effective products in the US. In both markets, consumer awareness and the ability to choose a reliable manufacturer are key.