Agency has been under heightened scrutiny since the nationwide infant formula shortage and debate over e-cigarette products

To remain on the market, e-cigarette manufacturers must prove there is a public health benefit with their use

Agency has already banned the sale of fruit-flavored e-cigarettes after critics claimed the products targeted teens

Extrapolation of the findings from pivotal clinical trials to the approved indication most common for disease severity

Possible risks from taking the drug include accidental poisoning and addiction

Concomitant use of central nervous system-depressant drugs listed for 58.4 percent of off-label gabapentin visits

Request follows reports that Biogen and the FDA held off-the-books meetings before the drug's approval that may have violated FDA protocol

Major changes to prescribing instructions are rare, especially so soon after approval; change could curb the drug's use

Donanemab has already received a 'breakthrough therapy' designation from the FDA

Several experts have said the available evidence about Aduhelm raises significant doubts about its effectiveness