drug called RLF Not like SamFisher’s favorite group the KLF The first report of rapid recovery under emergency use was posted by doctors from Houston Methodist Hospital, the companies said in a joint statement. It said a 54-year-old man who developed COVID-19 while being treated for rejection of a double lung transplant came off a ventilator within four days of treatment with RLF-100. Similar results were subsequently seen in more than 15 patients treated under emergency use, the companies said.