TaperCommunityalprazolam
Boxed Warning
Concomitant use with opioids may result in profound sedation, respiratory depression, coma, and death. Risks of abuse, misuse, and addiction, which can lead to overdose and death. Physical dependence and life-threatening withdrawal reactions.
Alprazolam is a short-acting, high-potency benzodiazepine approved for anxiety disorders and panic disorder. It is the most commonly prescribed benzodiazepine in the US and has the highest abuse potential among benzodiazepines due to rapid onset and short duration.
0.25mg, 0.5mg, 1mg, 2mg
Tablets: 0.25mg, 0.5mg, 1mg, 2mg; Extended-release tablets (XR): 0.5mg, 1mg, 2mg, 3mg; Orally disintegrating tablets: 0.25mg, 0.5mg, 1mg, 2mg; Oral concentrate: 1mg/mL
Category D (positive evidence of risk)
Positive allosteric modulator at GABA-A receptors. Binds to the benzodiazepine site, enhancing GABA-mediated inhibition. Its rapid onset and short half-life contribute to both its anxiolytic efficacy and high dependence liability.
Very short half-life makes this the hardest benzodiazepine to taper. Inter-dose withdrawal common. Crossover to diazepam strongly recommended.
Crossover to diazepam essential for safe taper. Very short half-life causes interdose withdrawal. Never stop abruptly.
Evidence-based phased reduction schedule. Always taper under medical supervision.
| Phase | Duration | Notes |
|---|---|---|
| Crossover to diazepam | 2-4 weeks | Strongly recommended due to Xanax's short half-life. Your prescriber will determine equivalence and crossover schedule. |
| Initial diazepam reductions | 2-4 weeks per step | Once stabilized on diazepam, your prescriber begins gradual reductions. Diazepam's long half-life makes each step smoother. |
| Middle reductions | 3-6 months | Progressively smaller reductions. Liquid diazepam may be used for precision. |
| Final reductions | 3-6 months | Very gradual approach. Work closely with your prescriber through this phase. |
6-12 hours after missed dose (fastest of all common benzos)
2-4 days (acute withdrawal can be medically dangerous)
2-4 weeks for acute symptoms if tapered properly
Rebound panic, cognitive impairment, agoraphobia, and depersonalization may persist 6-18 months. Xanax has the highest reported rate of protracted withdrawal among benzos.
Practical insights shared by members tapering Xanax. Not medical advice — always consult your prescriber.
Toxicity
Severe CNS and respiratory depression (especially with opioids/alcohol). Extremely high physical dependence potential. Withdrawal seizures and death possible with abrupt discontinuation. Rebound anxiety between doses.
Pharmacokinetics
Rapidly absorbed after oral administration. Bioavailability ~80–90%. Tmax 1–2 hours (IR), ~11 hours (XR). Food does not significantly affect total absorption.
~0.9–1.2 L/kg
Hepatic via CYP3A4 (primary) to alpha-hydroxyalprazolam (weakly active) and a benzophenone derivative (inactive).
Renal (~80% as metabolites). Less than 20% excreted unchanged in urine.
~80%
~1.0–1.3 mL/min/kg
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