Introduction: The global dietary supplements (DS) market is expanding, numerous adults regularly consume DS. Potential
interactions with prescribed medications raise concerns, but communication about DS intake during medical consultations
remains limited. This study explores general practitioners’ (GPs) perceptions of communication on DS during periodic
health examinations (PHEs).
Methods: We conducted a cross-sectional online survey among 162 German GPs between May and August 2021. The
pseudonymized web-based questionnaire assessed DS-related was carried out to analyze quantitative data.
Results: In total, 162 general practitioners (GPs) participated in the survey, aged 50.2 years (±11.1). While 64.8% of
GPs considered DS to be an important topic, 38.8% rarely or never (<25% of conducted PHE) addressed DS during
PHEs. Personal DS use (Cramers’ V = 0.407; P < .001) and considering DS an important topic (Cramers’ V = 0.231; P = .016)
were associated with more frequent discussions about DS. Time constraints (24.9%), competing priorities (21.4%), and
uncertainty about DS (20.5%) were identified to be the main barriers. Suggestions for improving communication included
offering more reliable information and including DS in the medication plan.
Conclusion: This is the first study addressing communication about DS in Germany. Despite recognizing the relevance
of DS, GPs’ communication practices remain limited due to time constraints and competing priorities. Integrating DS in
the PHE could identify potential interactions with medication, strengthen patient-doctor-relationship, and satisfy patients’
needs for individualized counseling. Implementation of standardized DS documentation in medication plans and the
provision of evidence-based information resources may improve patient safety and fulfill GPs informational needs.