|1.||Kill or cure|
(v.)A medical treatment/practise that will either heal the patient or kill them.
Steams from battlewound-fever treatment. This would involve putting the subject in an icewaterbath, then wrapping them in wool. It worked very well and very quickly, but it put tremendous strain on the heart, and many people suffered heart attacks or complete cardiac arrest.
Kill or cure is the only way to save him. Otherwise, you better pray for him.