Eventually he was directed to an emergency room in his city, which was expecting him. He was given an infusion of the drug on Monday. He is feeling much better, he said.
Both Mr. Trump and Mr. Christie, a longtime friend of his and former New Jersey governor, got the antibodies before they were approved by the F.D.A. Dr. Caplan, the medical ethicist, said he had no problem with Mr. Trump, 74, getting the therapy — he is, after all, the president, “a special person unto him- or herself.”
But Mr. Christie’s access appeared to be extraordinary. Mr. Christie, 58, was offered participation in a Regeneron clinical trial but turned it down, a person familiar with his treatment said, fearing he might receive a placebo. Instead, he received the Eli Lilly treatment. He is overweight and has asthma, and thus may have been a good candidate, Dr. Caplan said, though he wondered if similarly situated patients would have gotten the drug.
Dr. Carson, 69, got the Regeneron cocktail after it was approved, then took to Facebook last month to say he was “desperately ill” with the coronavirus until the president intervened.
“President Trump was following my condition and cleared me for the monoclonal antibody therapy that he had previously received, which I am convinced saved my life,” he wrote, adding that “we must prioritize getting comparable treatments and care to everyone as soon as possible.”
Mr. Giuliani’s treatment is less clear. Calling into ABC Radio from his hospital bed on Tuesday, he said specifically that he had received two drugs — remdesivir, which has F.D.A. approval for treatment of Covid-19, and dexamethasone, a steroid.
But he also said he had received the same treatment “cocktail” as the president: “Exactly the same, his doctor sent me here; he talked me into it,” Mr. Giuliani said of Mr. Trump’s physician, adding, “The minute I took the cocktail yesterday, I felt 100 percent better. It works very quickly, wow.”