The 84-year-old actor was in Beverly Hills following the death of Fisher, who reportedly suffered a heart attack on a flight from London to Los Angeles last Friday.
Reynolds had two children, Carrie Fisher and Todd Fisher, with her first husband, singer Eddie Fisher.
Hollywood legend Debbie Reynolds was reportedly taken to the hospital on Wednesday, just one day after her daughter, famed actor and author Carrie Fisher, died.
Carrie Fisher memorialized her tumultuous relationship with Reynolds in her semi-autobiographical novel, Postcards From the Edge.