Brown's husband and a friend called 911 after discovering the 21-year-old at her home in Roswell, Ga., at 10:30 a.m. and administered CPR until police arrived. Officers performed life-saving measures until paramedics responded to the scene and took Brown to North Fulton Hospital in Roswell.
TMZ reports Brown is now breathing, and is currently in the intensive care unit.
Police are investigating the incident.
Brown's mother, singer Whitney Houston, was found dead in a bathtub at a Beverly Hills hotel in Feb. 2012. An autopsy revealed 48-year-old Houston had drowned, and several drugs including cocaine were found in her system.