PREVuTANOL is a drug that stimulates the autobiographical memory recollection of patients with degenerative brain disorders like dementia and Alzheimer's. Patients use a PRE mask to breathe in a vaporized form of the PREVuTANOL through the nose and mouth.

Shortly after the drug’s release, an underground community emerged. These users, know as viewers, would mod the masks and manipulate the dosages to induce out-of-body, prolonged viewing times, and other modifications. This increase in dosage would often lead to long term effects and degradation of memories.