Hundreds of Brooklynites volunteered to help search for a missing Bushwick woman after her pals posted pleas for help on Twitter.

Friends of Brianna Zani are using the site to coordinate search efforts for the young woman, who vanished from Woodhull Hospital Thursday evening.

Zani, 21, was brought to the hospital after suffering a suspected psychiatric episode, according to her father, William Zani.

She has been missing since Tuesday, and her dad suspects she stopped taking her antidepressants.