Hyronalyn
From Star Trek : Freedom's Wiki
Hyronalin is a medicinal drug used to counter the effects of radiation poisoning. Adrenaline was the preferred treatment shortly after Earth's atomic age, but hyronalin replaced it after its discovery. (TOS: "The Deadly Years")
In 2371, Doctor Julian Bashir used hyronalin to treat Chief Miles O'Brien's radiation poisoning. (DS9: "Visionary")
