Amid tight security Jagan, who is in judicial custody in disproportionate assets case, was shifted from Osmania General Hospital to NIMS.
A team of eight doctors is monitoring the condition of the young leader, who has been admitted to emergency block. As the sugar and blood pressure levels have considerably come down and ketone bodies in urine are high, doctors advised him to agree to take intravenous fluids.
The doctors have warned that his condition may further deteriorate, if he continued his fast.
Jagan's mother YS Vijayamma, wife Bharati and brother-in-law Anil Kumar were not allowed to meet Jagan. They left the hospital after seeing him from a distance.
The MP is only drinking water since he began his fast in Chanchalguda Central Jail Sunday. He was shifted to Osmania Hospital late Thursday night.
Vijayamma, who is also honorary president of the party, and other party leaders had Friday appealed to him to call off the hunger strike.
Jagan's mother and wife filed a memo in the CBI court, seeking permission for one of them to stay with Jagan in the hospital. The plea will be heard Saturday.
Jagan is in jail since May last year in a disproportionate assets case.