Ronaldo then took to his own official account on Sunday to reassure supporters and those who had sent him well-wishes, however, while confirming the trip to hospital was true.
Ronaldo, 41, was reportedly rushed to a hospital Friday night.
Ronaldo Nazario was admitted to hospital in Ibiza to be treated for pneumonia, with the former Brazil and Real Madrid great set to be discharged on Monday.
Hospital sources have said he is still in intensive care but making good progress.
Ronaldo is a frequent visitor to the Balearic party island of Ibiza and owns a property there.
Ronaldo is believed to have arrived in Ibiza for a summer break a few days ago.
He is no stranger to illness, however.
In his later years he battled with overweight because of a thyroid problem.
After winning everything there is to win in the game he retired in 2011.
Pneumonia is swelling of the tissue in one or both lungs and is usually caused by a bacterial infection.
He picked up the Ballon d'Or award for the best player in the world in 1997 and 2002.
The big question at the 2002 World Cup in South Korea and Japan centered on Ronaldo.
He won his first cap for Brazil as a 17-year-old and went on to score 62 goals in 97 worldwide appearances, including both goals when Brazil beat Germany 2-0 in the 2002 World Cup final.
Here's hoping that he can make a speedy recovery.