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Abstract Background Despite increasing digitalisation the paper-based medication list remains one of the most important instruments for the documentation and exchange of medication-related information. However, even elderly patients with polypharmacy who are at high risk for medication errors and adverse drug events, frequently do not receive or use a complete and comprehensible medication list. Increasing the use of medication lists would be a great contribution to medication safety and facilitate the work of health care providers. Methods This study is related to the project MeinPlan (MyPlan) which comprised an information campaign on safe drug administration in the Rhine-Neckar region in South Germany. The campaign was evaluated in a before-and-after study based on a survey among two independent, representative samples of citizens over 65 years. In total, 5034 questionnaires were analysed. While the effects of the primary outcome (the percentage of citizens using a medication list) have been reported elsewhere, this analysis focusses on the effects of the campaign on citizens’ medication beliefs and assesses whether medication beliefs are associated with the use of medication lists, the use of over-the-counter drugs and the use of the tools offered by the campaign. Medication beliefs were assessed with the German version of the General Beliefs About Medicines Questionnaire (BMQ) which results in subscales for “General Overuse”, “General Usefulness” and “General Harm”. The use of medication lists and over-the-counter drugs was assessed with self-developed questionnaire items. Results No statistically significant change in citizens’ medication beliefs before and after the campaign could be detected. Likewise, no association between medication beliefs and the use of medication lists, the use of over-the-counter drugs or the use of the tools offered by the campaign could be shown. Conclusions A campaign focussing on the risks of drug administration did not change the medication beliefs of the targeted population. Moreover, citizens’ general medication beliefs do not seem to be crucial for their decision to use a medication list or over-the-counter drugs. Strategies to improve the use of medication lists by patients should focus on other influential factors, such as individual benefits and barriers and socio-psychological factors.