Skip to main content
Psychedex
Article

Alprazolam Facts

Depressant; Anxiolytic; Benzodiazepine; GABA-A receptor positive allosteric modulator

Description

Alprazolam — Xanax, bars, xans — is a synthetic depressant of the benzodiazepine class. It amplifies GABA — the brain's main calming signal — producing sedation, anxiety relief, and muscle relaxation.

Subjective effects include anxiety suppression, sedation, muscle relaxation, reduced social friction, and loosened inhibitions. The experience is defined by speed — worry quiets fast enough to feel like a switch being flipped.

Alprazolam builds physical dependence within days of continuous use,[1] but taken alone carries a wide safety margin — no solo-dose fatalities are documented.[2] The real danger is mixing it with opioids or alcohol, where combined respiratory depression can kill even at low alprazolam levels.[3]

Dose and durationby route · individual sensitivity varies

Oral(mg)
Threshold< 0.125 mgLight0.25 – 0.5 mgCommon0.5 – 1.5 mgStrong1.5 – 3 mgHeavy4+ mg

Starts in 15 – 30 minLasts 4 – 8 hoursAfter-effects 6 – 24 hours

Body and dependence

Acute toxicity
Low
Chronic toxicity
Moderate
Physical dependence
High
Psychological dependence
High
Withdrawal
Severe · fatal · medical supervision
Compulsive redosing
Moderate

Tolerance

Builds
Rapid
Fully resets after
14 days
Carries over to
diazepam; clonazepam; lorazepam; triazolam; zolpidem; zopiclone; alcohol; barbiturates

Effectslikely at a common dose

Perception
none likely · 3 possible, including Visual acuity suppression, Spatial disorientation
Body
Sedation; Muscle relaxation; Motor control impairment; +9 possible, including Dizziness, Headache, Nausea
Thinking
Analysis suppression; Memory suppression; Thought deceleration; +12 possible, including Delusions of sobriety, Cognitive impairment, Decision impairment
Feeling
Anxiety suppression; +3 possible
Self
none likely · 4 possible, including Communication suppression, Craving
Time
none likely · 2 possible, including Temporal disorientation

Who shouldn't take it

Absolute
Severe respiratory insufficiency; Sleep apnea syndrome; Known hypersensitivity to benzodiazepines; Acute narrow-angle glaucoma; Concurrent opioid use
Relative
Post-traumatic stress disorder; Borderline personality disorder; Bipolar disorder; Severe hepatic impairment; Pregnancy; Elderly

Combinations60 recorded

Lethal (1)
Opioids
Dangerous (21)
Alpha-2 adrenergic receptor antagonist; Antipsychotics; Atypical antipsychotics; Benzodiazepines; Buprenorphine, Kratom; Cannabis, THC; Clonidine, Guanfacine; Gabapentin, Pregabalin; GHB, Baclofen; GHB, GBL; Local anesthetics; Naltrexone; SNRIs; Stimulants; Synthetic cannabinoids; Ibogaine; Ketamine, DXM, PCP; MAOIs; NSAIDs; Poppers (Alkyl nitrites); Poppers, Nitrates
Caution (26)
See full page: psychedex.org/substances/alprazolam
Not graded (12)
Not listed never means safe.

Seek help immediately if

  • Extreme drowsiness — can't stay awake or be roused
  • Confusion, slurred speech, severe loss of coordination
  • Slow, shallow, or irregular breathing
  • Unconsciousness / unresponsive; limp, floppy body
  • Blue lips or fingertips
  • Vomiting while sedated (choking / aspiration risk)
  • Cold, clammy skin; weak pulse

What to do

  1. Try to wake them — shout, firm sternal rub
  2. If unresponsive or breathing is impaired, call emergency services
  3. Place them in the recovery position — critical, they can choke on vomit
  4. Monitor breathing continuously; be ready to give rescue breaths / CPR
  5. Never leave them alone to "sleep it off"
  6. Do not give other drugs, stimulants, or more depressants

Most depressant overdoses resolve with airway protection, breathing support, and monitoring. The danger is respiratory depression and choking on vomit — sharply worse when combined with opioids or alcohol. GHB/GBL overdoses often involve sudden deep unconsciousness and may self-resolve, but airway protection is essential.

988 Suicide & Crisis LifelineFireside Project: 62-FIRESIDE

Version r1 · Not medical advice

References

  1. [1]
    ^Martin JR, Moreau JL, Jenck F (1995) Precipitated withdrawal in squirrel monkeys after repeated daily oral administration of alprazolam, diazepam, flunitrazepam or oxazepam. — Psychopharmacology PMID:7617819
  2. [2]
    ^Jann M, Kennedy WK, Lopez G (2014) Benzodiazepines: a major component in unintentional prescription drug overdoses with opioid analgesics. — Journal of pharmacy practice doi:10.1177/0897190013515001
  3. [3]
    ^Vorce SP, Levine B, McDonough PC, Past MR (2010) An overdose death involving the insufflation of extended-release oxymorphone tablets. — Journal of analytical toxicology PMID:21819798
Print version
Report an issue