Analeptic Compound
From Star Trek : Freedom's Wiki
An analeptic (or analeptic compound) is a drug that counteracts the effects of radiation.
In 2373, Neelix took some analeptic compounds with him on a mission to a Nezu colony planet being bombarded by asteroids. (VOY: "Rise")
The Malon use analeptic compounds to ameliorate the cellular degradation caused by theta radiation exposure. In 2375, Fesek treated B'Elanna Torres with analeptic compounds during a mission to prevent a malfunctioning Malon freighter from exploding. (VOY: "Juggernaut")
When the USS Voyager was split into different timeframes in 2377 by a chrono-kinetic surge, Tom Paris ordered that analeptics be given to crew members suffering from radiation poisoning once the netrazine ran out. (VOY: "Shattered")