It is a piperidinedione derivative, closely related to other older sedatives.

Because of its risks, Doriden is no longer legally "bought" or sold in most major pharmacies.

It was moved to Schedule II (the most restrictive class for legal prescriptions) in 1991 before being completely discontinued.

Doriden was designed to act on the central nervous system to induce sleep.

Stopping the drug cold turkey after long-term use could lead to seizures, hallucinations, and even death.

Doriden is highly fat-soluble. During an overdose, the drug would "re-leach" into the bloodstream from body fat, causing patients to slip back into a coma just as doctors thought they were recovering. ⚖️ Legal Status and Availability