Are peptides legal in the Netherlands and Belgium? A factual guide (2026)

Anyone searching online for research peptides quickly runs into the question: is this actually legal? The answer is more nuanced than a simple yes or no, and depends heavily on the purpose for which a substance is purchased and used. This article gives a factual overview of the legal framework in the Netherlands and Belgium. It is informational and is not legal advice.

What does Dutch medicines law say about substances without a marketing authorisation?

In the Netherlands, a substance falls under the Medicines Act (Geneesmiddelenwet) as soon as it is offered, promoted or used for a medicinal purpose in humans. Peptides such as the research compounds offered on this site hold no marketing authorisation as a medicine in the Netherlands. They are not registered, not approved and have not been assessed by the Dutch Medicines Evaluation Board (CBG) for human use.

In practice this means: the moment a substance is sold or promoted as something to treat, improve or alter anything in a human being, there is a risk of breaching the Medicines Act. Regulators such as the Health and Youth Care Inspectorate (IGJ) supervise this.

What does Belgian legislation (FAMHP) say?

Comparable principles apply in Belgium. The Federal Agency for Medicines and Health Products (FAMHP/FAGG) supervises substances offered or used as medicines. Substances without an authorisation for human use may not be sold, promoted or applied as such.

What does "for research purposes only" mean legally?

The designation "for research purposes only" is not a marketing trick but a legally relevant delimitation: a substance is offered to an audience of laboratories, research institutions and qualified researchers, for use inside a laboratory environment — not for consumption or application to the human body outside a recognised research context.

That delimitation does not automatically shift all responsibility: the actual use of a substance ultimately determines whether it stays within the legal framework.

Responsibility of the buyer/researcher

The end user is responsible for the use they make of a product. This is also why serious suppliers — ZeusPeptides among them — apply explicit disclaimers and age verification.

What ZeusPeptides does and does not guarantee

ZeusPeptides supplies research peptides at HPLC-analysed purity exclusively for laboratory use by qualified researchers. We guarantee transparent "research use only" labelling and make no claims about medicinal effects in humans. We do not guarantee that use for any purpose other than laboratory research is legal, safe or permitted. That responsibility rests entirely with the buyer.

Conclusion

The legal status of research peptides in the Netherlands and Belgium is nuanced: the substances themselves are not categorically prohibited, but offering, promoting or using them as a medicine in humans falls under strict regulation for which no authorisation exists.

Sources / references

• Dutch Medicines Act (Geneesmiddelenwet), consulted via wetten.overheid.nl.
• Information from the Health and Youth Care Inspectorate (IGJ).
• Information from the FAMHP (FAGG), Belgium.
• Public information from RIVM on the risks of unapproved substances.