Vertigo is a deadly narcotic that makes its users disoriented. It was first developed by the man known as "Count Vertigo" and later by Werner Zytle. When injected directly into the blood stream while in its purest form, it affects the thalamus, where all the information from the pain receptors are collected. This then causes the victim to believe that they are in excruciating pain. The effect can last for days, until the heart just gives up and stops. With the version introduced by Werner Zytle, Vertigo not only induced excruciating pain, but also made the user hallucinate their greatest fear.