Anti-Radiation Serum is used to treat radiation exposure.
First edition GW: If administered immediately after exposure to radiation, this drug will restore any hit points lost to radiation. Note that this drug only restores hit points; it will not cure death.
Second edition GW: A 10 centimeter long disposable jet-spray tube of a drug that prevents radiation damage. If sprayed under the skin within 30 seconds of exposure, the character suffers no damage (including a "D" result) or mutation from the radiation. The serum works on all types of characters except Plants.