04 Jun 2019 --- The US Food and Drug Administration (FDA) has issued a warning to consumers about concerns regarding the safety of vinpocetine, an ingredient often marketed for cognitive sharpness. Specifically, the agency is voicing concerns about the use of this ingredient by women of childbearing age, following reports stating that vinpocetine may cause a miscarriage or harm fetal development. The move is a further step in the agency’s strengthened efforts to adapt to the realities of the growing US market for dietary supplements.