Doctors treating the third U.S. Ebola patient, Dr. Rick Sacra, have given him every treatment they can think of, and say something seems to be working because he’s getting better every day.

Sacra, 51, got two transfusions of blood serum from Ebola survivor Dr. Kent Brantly, who flew to Nebraska to donate his blood. He’s also getting an experimental drug — his doctors won’t say what — and careful testing of important compounds called electrolytes, to keep his heart and other organs functioning properly, NBC News reported.

“We just administered everything we had access to, basically,” said Dr. Phil Smith of the Nebraska Medical Center in Omaha, where Sacra is being treated at a special biocontainment unit.

Sacra, who was flown to Nebraska from Liberia last week, is steadily improving, said his wife, Debbie Sacra.

Sacra and another Ebola survivor, Nancy Writebol, were in Liberia with the missionary organization SIM USA. Brantly works for Samaritan’s Purse, headed by Billy Graham’s son Franklin Graham. All three of the survivors say their faith has sustained them through the crisis.