Methaqualone
Methaqualone is a sedative-hypnotic drug formerly prescribed for insomnia. Its recreational misuse led to tight controls or bans in many countries.
GABA receptor: A family of receptors that mediate much of the brain’s inhibitory signaling through gamma-aminobutyric acid. Methaqualone enhances inhibitory signaling, though its precise molecular actions are not fully settled.
Quaalude: A widely known United States brand name for methaqualone, marketed as a sedative-hypnotic. The brand became closely associated with the drug’s recreational use in the United States.
Insomnia: A persistent difficulty falling asleep, staying asleep, or obtaining restorative sleep despite adequate opportunity. Insomnia was the condition for which methaqualone was once prescribed.
Barbiturate: A class of central nervous system depressants derived from barbituric acid, formerly used for sedation and sleep. Barbiturates share sedative effects but differ chemically and pharmacologically from methaqualone.
Sedative: A drug or substance that reduces alertness and can promote calm or sleep. Methaqualone belongs to this broad class because it depresses central nervous system activity.
Mandrax: A brand name for methaqualone combined with diphenhydramine, historically sold in several countries. This formulation became especially prominent in illicit markets outside the United States.
Substance use disorder: A clinical pattern of substance use causing significant impairment, distress, or difficulty controlling use. Methaqualone misuse can develop into compulsive use and substantial harm.
Benzodiazepine: A class of drugs that enhance GABA-mediated inhibition and are used for anxiety, seizures, and related conditions. Benzodiazepines became common alternatives to older sedative-hypnotics such as methaqualone.
Hypnotic: A substance used to induce or maintain sleep. Methaqualone was prescribed as a sleep-inducing drug.
Drug repurposing: The use of an existing drug for a medical purpose different from its original intended use. Methaqualone’s development and prescribing history involved its use as a sleep treatment.