RadAway

Rad Away can be found in Fallout, Fallout 2, and Fallout Tactics.

A chemical solution that bonds with radiation particles and passes them through your system. Takes time to work.

Rad Away has a 5% chance of addiction per use.

In Fallout 2, Charlie, who is found suffering from radiation poisoning outside of Vault City, notes that Rad Away is a potent diarrhetic.