Reporting side effects of medicines or vaccines
Medicines can sometimes cause unintended symptoms. These are called side effects. If you want to report a side effect of a medicine or vaccine, you can do so at Bijwerkingencentrum Lareb (Netherlands Pharmacovigilance Centre Lareb).
Last updated on 1 July 2025
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Reporting side effects using online form
You can report a side effect of a medicine or vaccine online (in Dutch) on the Lareb website by clicking on “Meld een bijwerking”.
Bijwerkingencentrum Lareb collects, registers and analyses your report. Lareb discusses any relevant findings with the Medicines Evaluation Board (MEB). The MEB then assesses the side effects.
Read on the MEB website why you should report side effects of medicines and vaccines (in Dutch). And what the MEB does with your report.
Looking up side effects of medicines or vaccines
In Lareb’s register for side effects of medicines, you can look up the side effects of a medicine or vaccine.