Loading page
Loading page
Loading substance route
Effects vary widely by individual, dose, and context.
The physical effects of alprazolam can be broken down into several components which progressively intensify proportional to dosage.
The cognitive effects of alprazolam can be broken down into several components which progressively intensify proportional to dosage. The general head space of alprazolam is described by many as one of intense sedation, relaxation, anxiety suppression and decreased inhibition. It contains a large number of typical depressant cognitive effects. Paradoxical reactions to benzodiazepines such as increased seizures (in epileptics), aggression, increased anxiety, violent behavior, loss of impulse control, irritability and suicidal behavior sometimes occur (although they are rare in the general population, with an incidence rate below 1%). These paradoxical effects occur with greater frequency in recreational abusers, individuals with mental disorders, children, and patients on high-dosage regimes.
Primarily hepatic via CYP3A4 with minor contributions from CYP3A5, CYP3A7, and CYP2C9. Undergoes hydroxylation to produce at least 29 metabolites. A substantial portion is excreted unchanged in urine by the kidneys.
These combinations are considered extremely harmful and should always be avoided. Reactions to these drugs taken in combination are highly unpredictable and have a potential to cause death.
There is considerable risk of physical harm when taking these combinations, they should be avoided where possible.
These combinations are not usually physically harmful, but may produce undesirable effects, such as physical discomfort or overstimulation. Extreme use may cause physical health issues. Synergistic effects may be unpredictable. Care should be taken when choosing to use this combination.
Alprazolam is considered highly psychologically addictive with significant abuse potential. Its high binding affinity, high potency, and rapid onset increase abuse liability. Compulsive redosing is commonly reported among users seeking a 'high', which frequently leads to blackout states and impaired judgment.
Physical dependence develops reliably with regular use, particularly at doses above 4 mg daily or with use exceeding six months. Withdrawal is potentially life-threatening and can include tremors, seizures, marked delirium, and in rare cases coma or death. Medical supervision and gradual tapering over weeks or months is essential; abrupt discontinuation is extremely dangerous.
Alprazolam has low toxicity relative to dose when taken alone. Deaths from alprazolam overdose without other substances are unusual, and many suicide attempts using alprazolam alone are unsuccessful. Lethality increases dramatically when combined with other CNS depressants such as alcohol, opioids, or barbiturates. An Australian study found alprazolam to be more toxic than diazepam and other benzodiazepines, associated with longer hospital stays, greater likelihood of mechanical ventilation, and higher rates of ICU admission even when correcting for other factors.
| Species | Route | Value |
|---|---|---|
| rat | oral | 331-2171 mg/kg |
Misuse of alprazolam has been shown to cause cognitive impairment including memory deficits; occasional use at therapeutic doses does not appear to cause lasting neurological damage.
Injection of oral alprazolam preparations has caused dangerous damage to blood vessels, embolization, and rhabdomyolysis; this risk is specific to injection misuse and does not apply to oral administration.
Respiratory depression can occur at high doses or in overdose, particularly when combined with other depressants; patients with pre-existing respiratory impairment are at increased risk.
Hallucinations are rare during alprazolam use. Paradoxical reactions including mania, agitation, and rage occur with an incidence below 1% in the general population but are more frequent in recreational abusers, individuals with mental disorders, children, and patients on high-dose regimens. Delirium and hallucinations may also occur during withdrawal.
Alprazolam itself has anticonvulsant properties during use. However, abrupt discontinuation after regular use carries significant seizure risk that can be life-threatening. Paradoxical increased seizure activity has been reported in epileptics. Gradual dose tapering over weeks is essential to minimize withdrawal seizure risk.
Alprazolam was first synthesized in 1971 by J.B. Hester at the Upjohn Company, a pharmaceutical manufacturer that would later become part of Pfizer. The compound was developed as a triazolobenzodiazepine, featuring a triazole ring fused to the core benzodiazepine structure. Following its synthesis,…
United Nations Convention on Psychotropic Substances (Schedule IV)
Originally classified as Schedule 4 (prescription only), alprazolam was rescheduled to Schedule 8 in January 2014, subjecting it to more rigorous prescribing requirements. Maximum in-house consumption is limited to 5 mg per day.
Benzodiazepines including alprazolam are regulated as prescription medications under Belgian pharmaceutical law.
Controlled substance under Nařízení vlády č. 463/2013 Sb. Available exclusively with a standard prescription (without blue stripe designation).
Controlled under Anlage III of the Betäubungsmittelgesetz (Narcotics Act) since August 1, 1986. Requires a narcotic prescription form, except for preparations containing up to 1 mg per dosage unit. Maximum of 50 dosage units may be dispensed together.
Listed in Tabella 4 under the Testo unico sulla droga (D.P.R. 309/90). For medical prescriptions, falls under Pharmaceuticals section B and E.
Controlled under List 2 of the Opium Law. Available for legitimate medical use with a valid prescription.
Listed as a Schedule 5 substance, making it available by prescription only. Marketed under the brand name Zopax.
Specifically named as a controlled substance under Verzeichnis B of Swiss narcotics legislation. Available by prescription in 0.25, 0.5, 1, and 2 mg dose units.
Classified as a Class C drug under the Misuse of Drugs Act 1971 and listed under Schedule 4, Part I (CD Benz POM) of the Misuse of Drugs Regulations 2001. Requires a valid prescription for lawful possession. Not available through the National Health Service.
Legal for medical use under the Arzneimittelgesetz (AMG). Possession or sale without a valid prescription is prohibited under the Suchtmittelgesetz (SMG).
Controlled under Schedule IV of the Controlled Drugs and Substances Act. Requires a valid prescription for lawful possession.
Classified as a List I substance under French pharmaceutical law. Available only by prescription and illegal to purchase without one.
Classified as a Schedule 4 controlled medicine. Requires a valid prescription for legal possession.
Classified as a Schedule II controlled substance requiring a prescription for legal acquisition.
Classified as a Schedule III controlled substance since 2013. Requires prescription for legal possession.
Regulated as a prescription medication under List IV of the Narcotics Drugs Act (Narkotikastrafflagen) of 1968.
Designated as a 'green prescription' medication, indicating stricter prescribing controls. Possession or sale without prescription is illegal.
Assigned to Schedule IV of the Controlled Substances Act by the Drug Enforcement Administration. Received FDA approval on October 16, 1981. Illegal to sell without a license and illegal to possess without a valid prescription.
12 sources cited
