The 94-year-old "slipped into a little coma," according to her husband Prince Frederic von Anhalt, after being taken to Ronald Reagan UCLA Medical Center on Tuesday. Gabor was transported to the hospital after the feeding tube inserted into her stomach caused bleeding.
Von Anhalt told CNN she is suffering from a stomach infection. She was unresponsive as of late Wednesday.
Gabor was just released from the same hospital on Monday after being treated for pneumonia.
The actress has already been hospitalized several times this year.
After part of her right leg was amputated in January, Gabor returned to the hospital in February when she suffered a high fever, fluid in her lungs and an infection in her right leg. She was treated earlier this month for poor circulation in her left leg.