Halve zolpidem dose for insomnia: FDA

Doctors should consider halving doses of zolpidem for patients with insomnia to reduce the risk of car accidents, the US drug watchdog has warned.

The warning, announced Thursday by the US Food and Drug Administration, comes as fresh data from clinical trials and driving simulations show serum levels the morning after zolpidem use may be high enough to impair driving in some patients.

The watchdog had previously received 700 reports where zolpidem was linked to