|This is an overview article which contains background information and cross-game comparisons. For game-specific information and stats, see the articles linked on the right.|
Med-X is a chem that appears in Fallout 3 and Fallout: New Vegas.
Med-X is a potent opiate analgesic that binds to opioid receptors in the brain and central nervous system, reducing the perception of pain as well as the emotional response to pain. In layman's terms, it's a run-of-the-mill pain killer delivered via a hypodermic needle. According to Boxcars, 5 hits of Med-X will knock someone out and 15 is enough to kill a man.
Med-X is a potent pain killer that can be often be found in first aid boxes or abandoned medical facilities. The chem will increase your damage resistance by 25%, but there's also a 10% addiction rate that results in a -1 penalty to Agility and Intelligence.
 Behind the scenes
Originally, Med-X was named "morphine" in Fallout 3. However, on July 4, 2008, Fallout 3 was refused classification by the OFLC in Australia, thus making the game illegal for sale in the country due to the "realistic visual representations of drugs and their delivery method [bringing] the 'science-fiction' drugs in line with 'real-world' drugs." On September 9, 2008 Bethesda vice president of PR and marketing, Peter Hines, described the idea of the Australian version of Fallout 3 as a misconception, and said all versions of Fallout 3 will not include real world drug references. However, the name "morphine" is still used in the Japanese and Czech versions of the game.