Representatives of the National Health Surveillance Agency (ANVISA in Portuguese) have warned about the poor quality of dietary supplements available in the national market. According to them, this sector leads the list of complaints regarding health violations and has a high number of disapproved products.

Representatives from both the agency and the supplement industry were interviewed by the Consumer Protection Commission of the Chamber of Deputies. For the companies, the solution lies in self-regulation and adherence to established legal standards.

The supplement sector receives the highest number of complaints regarding health violations, as stated by Renata de Araújo Ferreira, the inspection coordinator at ANVISA. Between 2020 and 2025, 63% of the investigations initiated by the agency involved these products. She emphasized that more than half of the complaints are related to misleading advertising of supplements sold on digital platforms, which complicates monitoring and oversight.

Renata Ferreira reported that ANVISA intends to employ artificial intelligence (AI) tools to expedite the identification of irregular products online. She confirmed that this technology has already been utilized, resulting in the removal of over 230,000 advertisements, approximately 60,000 of which were related to dietary supplements.