Americans Took Prevagen for Years—as the FDA Questioned Its Safety
Commercials for Prevagen have insisted that “it’s safe and effective,” an assurance Quincy echoed to regulators. But my investigation for WIRED now shows that for years officials at the FDA questioned the basis for the company’s claims. Multiple FDA inspections, most of which have not been reported before, found significant issues with Quincy’s manufacturing processes, complaint handling, and the quality control testing that was supposed to ensure its products were safe.
And thousands of Americans have reported experiencing “adverse events” while taking Prevagen, including seizures, strokes, heart arrhythmias, chest pain, and dizziness. While the existence of adverse event reports alone don’t prove a product is the cause, the nature and pattern of complaints about Prevagen worried FDA officials, according to agency records. One internal report from 2015 stated that the “numerous adverse events reported” indicated “a serious safety hazard.”