LOS ANGELES – Prosecutors in Santa Barbara have charged Heather Locklear with misdemeanor driving under the influence, citing prescription drugs.

The California Highway Patrol said the actress showed “obvious impairment” when an officer noticed her car parked on a highway and blocking a lane in Montecito in September, but that alcohol was ruled out. She was tested for drugs at a police station and released.

Locklear, whose TV credits include “Dynasty” and “Melrose Place,” divorced from Bon Jovi guitarist Richie Sambora last year and sought treatment for anxiety and depression in June.

Locklear is scheduled for arraignment on Jan. 26. Her attorney, Blair Berk, had no comment when reached via e-mail Monday.