Congress president Sonia Gandhi has been shifted to Sir Ganga Ram hospital from Army Research and Referral Hospital.
The Congress leader was treated for fever, high blood pressure and dehydration.
" She was put on IV-fluids as she had massive electrolyte imbalance. She was stablised at R&R before being shifted to Ganga Ram Hospital," HT quoted its sources as saying.
Party spokesperson Congress leader Randeep Surjewala said on Wednesday that Sonia’s condition is stable and she is recovering.
"She has also thanked all fellow countrymen and crores of congress men for their concern and good wishes expressed over the last 24 hours," he added.
Meanwhile, Defence Minister Manohar Parrikar met the Congress Supremo at the hospital here.
Earlier, Prime Minister Narendra Modi offered help to Gandhi, who had to cut short her Varanasi visit after falling ill, by sending a doctor for her health check-up and a plane for her transportation back to the national capital.
Sources told ANI that Prime Minister Modi also spoke to Congress' chief ministerial candidate for 2017 Uttar Pradesh assembly polls, Sheila Dikshit, and enquired about Gandhi's health.
Senior Congress leader Ghulam Nabi Azad said her condition was "stable" after she suffered a bout of "dehydration, vomited and had fever" in Varanasi. She received medical attention in Varanasi and doctors who attended to her in the holy city accompanied her on the flight back to Delhi.
She received medical attention in Varanasi and doctors who attended to her in the holy city accompanied her on the flight back to Delhi. Priyanka Gandhi Vadra, who was at the airport to receive her mother, said she was unwell for the last couple of days but decided against cancelling the programme.
The Congress leader on Tuesday left her 8 km road-show in Varanasi midway and returned to Delhi by a chartered flight at midnight on her doctor's advice after she felt feverish during the election campaign in the temple city.
Talking to reporters, Congress MP Pramod Tiwari said, 'Sonia ji is completely fine, she just felt a little tired.'
"She (Sonia Gandhi) will be completely fine & will see Modi Govt's eradication to its end," he added.
The Congress President today launched her party’s campaign for the 2017 Uttar Pradesh Assembly elections from Prime Minister Narendra Modi’s Lok Sabha constituency Varanasi.
Thousands of Congress supporters and workers took part in the roadshow from the Circuit House to Englishiya Line, a distance of about eight kilometres.
Accompanied by Sheila Dikshit, who is the party's Chief Ministerial candidate in the state, AICC General Secretary Gulam Nabi Azad, UPCC Chief Raj Babbar, senior party leaders Pramod Tiwari and Sanjay Singh, Sonia’s three-hour roadshow began from Kachahari.
The march began with Gandhi garlanding the statue of B R Ambedkar at the Circuit House and the marchers criss-crossed lanes and bylanes of the temple town.
She stood in an SUV, waving to the thousands of people who gathered as her cavalcade of cars drove slowly through the streets of the temple town in a 6.5 km road show to signal that her party means business in UP
The 8 km long roadshow will conclude at Englishiyaline where Sonia is expected to deliver a short speech and garland the statue of former union minister and Uttar Pradesh chief minister late Kamlapati Tripathi.
The roadshow is a part of the campaign ‘dard-e-banaras’ to highlight lack of development in Varanasi, which the Prime Minister represents in the Lok Sabha.
Congress is out of power for 27 years in Uttar Pradesh and is projecting that the state has gone from bad to worse in last 27 years through a campaign called "27 saal UP behal".
The Congress president will also meet those who are associated with the cleaning of river Ganges.
The politically crucial Uttar Pradesh will go to polls in early 2017.
Earlier this morning, Sonia arrived to a rousing welcome here with party workers lining up both sides of the road from the airport and raising slogans hailing her.
After reaching the Babarpur airport, she spent some time in the VIP lounge and then drove off for her scheduled road show.
On way, as her cavalcade emerged out of the airport, hundreds of enthusiastic Congress workers showered petals on her and asked her to lead the party to power in Uttar Pradesh.
She waved back to the supporters and, at times, greeted them with folded hands from inside her bulletproof vehicle. Security personnel had a tough time keeping the crowds at bay.
This is the third major programme of the party in Uttar Pradesh in the past few days after " 27 saal-UP behal+ " Delhi-Kanpur bus yatra and Rahul Gandhi+ 's interactive session with booth level workers in Lucknow.
Newly appointed UP Congress chief Raj Babbar told reporters that he was sure the people of the state will back the party in the assembly polls in 2017.
"The people of UP have always shown miracles. In 2004 they gave us many MPs, in 2007 they gave a mandate to the BSP, in 2012 to the SP and in 2014 to Prime Minister (Narendra) Modi. I am sure that in 2017 the miracle is going to be in our favour," he said, adding that Sonia has come to seek the blessings of Baba Vishwanath of Kashi.
