The 42-year-old, who was discharged from Jaslok Hospital where she was admitted for three days, will go with her family to the US. No further details are known.
"Given her condition, she is fine and we are hopeful she will come out of it," the source said, while refusing to give details citing patient-privacy privileges.
Manisha was taken to the hospital Nov 28 after she reportedly fell unconscious.
The actress hails from an influential family in Nepal. She made her debut with "Saudagar" in 1991 and recently made a comeback with Ram Gopal Varma's "Bhoot Returns".