Previous research has highlighted several quality-related concerns regarding food supplements available on the market, which compromise their safe consumption. This study evaluates whether the adoption of the European Pharmacopoeia (Ph. Eur.) as a framework for improving supplement quality could enhance quality and safety control practices. The findings are derived from a comparative legal analysis of the Canadian and U.S. legal systems. The results suggest that its application in the Canadian market may serve as an illustration of the Brussels effect in practice. Simultaneously, the European Food Safety Authority (EFSA) already encourages EU Food Business Operators (FBOs) to utilise the Ph. Eur. when assessing food supplement ingredients. Nevertheless, careful consideration is necessary regarding the extent of regulatory compliance by FBOs to mitigate potential conflicts with existing EU legislation and to prevent delays in innovative developments within the supplement market.
