Influencer Marketing, Food Supplements and the Gap Between Rules and Enforcement

Food Supplements and Influencer Advertising


When health advice becomes advertising, who is responsible for protecting the consumer?

A November 2025 article in Regulatory Focus by Angela Clausen and Sabrina Göddertz examines influencer marketing of food supplements in Germany and the challenges it creates for consumer protection.

The authors highlight three recurring problems: advertising that is not clearly identified, health claims that may not comply with EU rules, and dosage recommendations that can expose consumers to unnecessary risks. Their review also points to a practical enforcement problem: national authorities often struggle to monitor the volume and speed of social-media content.

The regulatory framework already includes EU rules on food information, health claims and digital services. The challenge is making these rules effective in an online environment where influencers can reach large audiences, promote their own products and communicate directly with consumers.

The authors call for stronger EU-wide regulation, including pre-market authorisation of food supplements, harmonised maximum levels for vitamins and minerals, better monitoring and specific protection for children.

However, stronger regulation is only one side of the discussion. Any new requirements also need to be proportionate, scientifically justified and practical to enforce. The distinction between ensuring product safety, controlling advertising claims and monitoring online platforms matters.

The broader question is not simply whether rules exist, but whether responsibilities, information and enforcement mechanisms work together effectively.

Read the original article in Regulatory Focus: Influencer advertising of food supplements.

From Supplement Promotion to Clinical Evidence

Clinical research offers another perspective on influencer marketing of food supplements. Vitamins, minerals, probiotics, omega-3 fatty acids and botanical ingredients are studied for a range of health outcomes, but the existence of a study does not establish that a commercial product delivers the benefit suggested in an advertisement.

The relevant questions are familiar from clinical research: Was the study designed to answer the claimed question? Was the sample size adequate? Were clinically meaningful outcomes assessed? Were the results published, and do they apply to the specific product, dose and population being promoted?

There is also a distinction between evidence for an ingredient and evidence for a finished product. Formulation, dose, population and intended use can all matter. Commercial communication should not imply stronger conclusions than the evidence supports.

A more evidence-based approach to supplement promotion would connect consumers not only with product information, but also with accessible research results, transparent disclosures of commercial relationships and clear explanations of what the evidence does—and does not—show.

Where to find clinical research

  • EU Clinical Trials Information System (CTIS) — Search EU/EEA clinical trials. The official public portal provides information about trials governed by the EU Clinical Trials Regulation. Search for terms such as vitamin D, probiotic, omega-3 or a specific ingredient.

  • EU Clinical Trials Register — Search older trials. This covers trials approved under the earlier EU Clinical Trials Directive and certain other studies.

  • EFSA — Health-claim application procedure. This explains how the scientific basis for proposed food health claims is assessed.









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