US President Donald Trump says that doctors have told him that he could’ve become very ill with Covid-19 and credits an experimental antibody drug for helping him recover, AP reported.

Trump told Rush Limbaugh in his call-in radio show that he was not in “great shape” and “might not have recovered at all.” But one day later, he was fine.

Trump said he is trying to get federal health officials to quickly approve an emergency use authorisation from Regeneron Pharmaceuticals, which provides the antibody drug.

He added it just “wiped out the virus,” which he says has killed five friends.

Health experts say there is no way for the president or his doctors to know whether the drug was effective.