Xanax (Alprazolam) at a glance: schedule, half-life, and class
- Generic name
- Alprazolam
- Brand names
- Xanax, Xanax XR
- Drug class
- Benzodiazepine
- US legal status
- Schedule IV, prescription only
- Approved uses
- Generalized anxiety disorder, panic disorder
- Forms
- Tablet, extended-release tablet, orally disintegrating tablet, oral solution
- Peak effect
- 1 to 2 hours after an immediate-release dose
- Half-life
- About 11 hours on average (range 6 to 27) in healthy adults
- Broken down by
- Liver enzyme CYP3A4
- FDA boxed warnings
- Use with opioids; misuse and addiction; dependence and withdrawal
Xanax uses: what alprazolam is prescribed for
Alprazolam is FDA-approved for the short-term treatment of generalized anxiety disorder and for panic disorder with or without agoraphobia. The extended-release form (Xanax XR) is approved for panic disorder only.[1]
It belongs to the benzodiazepine class. These medicines increase the effect of GABA, the brain's main calming chemical, which reduces anxiety and causes sedation.
Xanax dosage: how alprazolam is usually prescribed
The figures below come from the FDA-approved label and describe how prescribers typically use the medicine. They are not personal dosing advice. A prescriber sets the dose for each person and usually aims for the lowest dose that works.[1]
| Condition | Typical starting dose | Label maximum |
|---|---|---|
| Generalized anxiety disorder | 0.25 to 0.5 mg three times a day | 4 mg a day in divided doses |
| Panic disorder (immediate release) | 0.5 mg three times a day | Up to 10 mg a day in some patients |
| Panic disorder (extended release) | 0.5 to 1 mg once a day | Usual range 3 to 6 mg a day |
| Older adults or liver disease | 0.25 mg two or three times a day | Raised slowly if needed |
Tolerance and dependence become more likely with higher doses and longer use, which is why treatment is meant to be reassessed regularly.
Xanax (alprazolam) side effects and risks
FDA boxed warnings
- Taking benzodiazepines with opioids can cause profound sedation, slowed breathing, coma, and death.[2]
- Benzodiazepines can be misused and can lead to addiction, which raises the risk of overdose and death.[3]
- Regular use can cause physical dependence. Stopping suddenly or cutting the dose quickly can cause withdrawal reactions, including seizures, that can be life-threatening.[3]
Common side effects include drowsiness, tiredness, lightheadedness, poor coordination, memory problems, slurred speech, irritability, constipation, and changes in appetite or sex drive.[1]
Serious risks include impaired driving, falls (especially in older adults), worsening depression, and breathing problems in people with lung disease or sleep apnea. Use late in pregnancy can cause sedation and withdrawal symptoms in the newborn.[1][3]
Xanax interactions: what not to mix with alprazolam
Choose what it would be combined with:
| Combined with | What happens | Label guidance |
|---|---|---|
| Opioids (oxycodone, fentanyl, codeine) | Slowed breathing, coma, death | Boxed warning; avoid unless no alternative |
| Alcohol | Stronger sedation and slowed breathing | Avoid |
| Other sedatives, sleep medicines, gabapentinoids | Additive drowsiness and impaired coordination | Use caution |
| Ketoconazole, itraconazole | Sharply raise alprazolam levels | Do not combine |
| Nefazodone, fluvoxamine, cimetidine, erythromycin | Raise alprazolam levels | Lower dose or caution |
| Carbamazepine, phenytoin | Lower alprazolam levels | May reduce effect |
This is not a full list. A pharmacist can check a complete medication list, including supplements and over-the-counter products.[1]
Xanax overdose: signs of alprazolam overdose and what to do
Signs include extreme drowsiness, confusion, slurred speech, poor coordination, slow reflexes, and loss of consciousness. Overdose is far more dangerous when alprazolam is combined with opioids or alcohol, because breathing can slow or stop.[1]
If someone may have overdosed
- Call 911 if the person is unresponsive, hard to wake, or breathing slowly.
- For advice when the person is awake and stable, call Poison Help at 1-800-222-1222 (US, free, 24 hours).
- If opioids could be involved, including pills not from a pharmacy, give naloxone if you have it. Naloxone does not reverse alprazolam, but it will not harm the person.
- Stay with the person and place them on their side if they are drowsy or vomiting.
Hospitals can treat benzodiazepine overdose with supportive care and, in selected cases, the antidote flumazenil.[1][4]
Xanax withdrawal timeline: how long alprazolam withdrawal lasts
People who take alprazolam regularly, even as prescribed, can become physically dependent within weeks. Because alprazolam leaves the body quickly, withdrawal tends to start sooner and feel more intense than with longer-acting benzodiazepines.[3]
- Days 1 to 2Symptoms beginRebound anxiety, insomnia, restlessness, sweating, and tremor.
- Weeks 1 to 4Acute withdrawalPanic, irritability, muscle pain, nausea, sensitivity to light and sound, and in severe cases seizures or delirium.
- MonthsProtracted symptoms in some peopleA minority have lingering anxiety, poor sleep, low mood, or tingling that can last weeks to more than 12 months.
Warning: Stopping alprazolam abruptly after regular use can cause seizures. The dose should be reduced gradually under the care of a prescriber.
The FDA label advises lowering the daily dose by no more than 0.5 mg every three days, and notes that some people need a slower reduction. Clinical guidance from addiction medicine specialists favors slower, individualized tapers, often small reductions every few weeks, sometimes after switching to a longer-acting benzodiazepine.[5]
How to get prescribed Xanax (alprazolam) legally in the US
In the United States, alprazolam is a Schedule IV controlled substance. The only legal way to get it is with a prescription from a clinician registered with the Drug Enforcement Administration (DEA), filled by a licensed pharmacy. Depending on state law, that can be a physician, nurse practitioner, or physician assistant.[6]
- Refills: a Schedule IV prescription can be refilled up to five times within six months of the date it was written. After that, a new prescription is needed.[7]
- Telehealth: federal flexibilities let DEA-registered clinicians prescribe Schedule II to V medicines after a telemedicine visit, without a prior in-person exam, through December 31, 2026. A permanent DEA rule was under final review in late 2026. State rules can be stricter.[8]
- Monitoring: prescribers and pharmacists in most states check a prescription drug monitoring program, a database of controlled-substance prescriptions, before prescribing or dispensing.
- Pharmacies: a legitimate pharmacy always requires a valid prescription, has a licensed pharmacist available, and is licensed in the state it ships to. The FDA's BeSafeRx tool and the NABP's safe pharmacy list help confirm a pharmacy is real.[9][10]
- Cost: generic alprazolam is widely available and is covered by most insurance plans.
Warning: Pills sold as Xanax or "bars" outside a pharmacy are often counterfeit. The DEA reports that fake pills frequently contain fentanyl or methamphetamine, and they cannot be told apart by appearance.[11]
Traveling: keep the medicine in its original pharmacy container and carry a copy of the prescription. Check the rules of the destination country before travel, because many countries restrict controlled medicines or require a permit.
Can you order Xanax (alprazolam) online legally?
Yes, but only with a valid prescription and only from a pharmacy licensed in your state. Many licensed pharmacies, including mail-order pharmacies run by insurers, fill alprazolam prescriptions online and ship them. Buying alprazolam from a website that does not require a prescription is illegal, and the product is often fake.[9][11]
- See a licensed clinicianA clinician evaluates you in person or by telemedicine and decides whether alprazolam is appropriate.
- The prescription goes to a pharmacyPrescriptions for controlled medicines are usually sent electronically, straight from the prescriber to the pharmacy you choose.
- The pharmacy checks and fills itA pharmacist verifies the prescription and your identity, then dispenses the medicine in person or by mail.
Signs that an online seller is illegal:
- It sells alprazolam with no prescription, or after only a short online questionnaire.
- It takes orders through social media, messaging apps, or email.
- It asks for payment in cryptocurrency, gift cards, or money transfers.
- It has no US street address, no state pharmacy license, and no pharmacist to speak to.
- Its prices are far below those of ordinary pharmacies, or it ships from another country.
The FDA's BeSafeRx tool links to each state's license lookup, and the National Association of Boards of Pharmacy lists verified online pharmacies.[9][10]
Xanax price: how much does Xanax (alprazolam) cost without insurance?
Generic alprazolam is one of the less expensive prescription medicines in the US. Without insurance, 90 tablets of the 1 mg immediate-release generic list at about $89 at retail, roughly $1 a tablet. With a free discount card the same prescription can cost under $13. Brand-name Xanax costs several times more than the generic.[13]
| How you pay | What to expect |
|---|---|
| Insurance | Generic alprazolam is on most formularies, usually at the lowest copay tier |
| Cash, retail price | About $89 for 90 tablets of 1 mg generic |
| Cash with a discount card | Often under $13 for the same 90 tablets |
| Brand-name Xanax | Much higher; usually only needed if a prescriber specifies the brand |
Ways to pay less, legally:
- Ask the prescriber for the generic, which is FDA-approved as equivalent to the brand.
- Compare prices between pharmacies. Cash prices for the same prescription can differ several times over in one town.
- Use a free prescription discount card (such as GoodRx or SingleCare) when you pay cash. These cards cannot be combined with insurance on the same fill.
- Ask about a 90-day supply, which often costs less per tablet if your prescriber agrees it is appropriate.
- Check your insurer's mail-order pharmacy, which may charge a lower copay.
Warning: A price far below these figures, especially with no prescription required, is a strong sign of an illegal seller and counterfeit pills.
Prices change often and vary by pharmacy, strength, and location, so check current prices before you fill a prescription.
Is Xanax legal? Alprazolam legal status in other countries
| Country | Status |
|---|---|
| United Kingdom | Class C; available on private prescription, not routinely on the NHS |
| Canada | Schedule IV of the Controlled Drugs and Substances Act, prescription only |
| Australia | Schedule 8 controlled drug since 2014 |
| International | Schedule IV of the 1971 UN Convention on Psychotropic Substances |
Laws change and differ in detail. Check current rules before carrying any controlled medicine across a border.[12]
Common questions about Xanax (alprazolam)
How long does Xanax (alprazolam) take to work?
Immediate-release alprazolam usually starts working within 30 to 60 minutes and reaches its peak level in the blood after 1 to 2 hours.
How long does Xanax (alprazolam) stay in your system?
Its average half-life is about 11 hours, so most of a single dose is cleared in two to three days. It can be detected for longer in people who take it regularly, in older adults, and in people with liver disease or obesity.
Is Xanax (alprazolam) addictive?
Yes. It can cause physical dependence and addiction, even at prescribed doses. The risk rises with higher doses, longer use, and a history of substance use disorder.
Can you drink alcohol with Xanax (alprazolam)?
No. Alcohol and alprazolam both slow the central nervous system. Together they increase sedation and the risk of dangerously slow breathing.
Can you buy Xanax (alprazolam) online legally?
Yes, with a valid prescription from a DEA-registered clinician, filled by a pharmacy licensed in your state. Under federal flexibilities that run through December 31, 2026, the prescription can follow a telemedicine visit, subject to state law. A website that sells alprazolam without a prescription is not a legal pharmacy.
Can you buy Xanax (alprazolam) without a prescription?
No. In the US it is illegal to purchase or possess alprazolam without a valid prescription. Pills sold without one are frequently counterfeit and may contain fentanyl.
How much does Xanax (alprazolam) cost without insurance?
Generic alprazolam lists at about $89 for 90 tablets of 1 mg at retail, and often under $13 with a free discount card. Prices vary by pharmacy and change often.
How do you order a Xanax (alprazolam) refill?
Ask your pharmacy to refill it, online, by phone, or in person. A Schedule IV prescription can be refilled up to five times within six months of the date it was written if the prescriber authorized refills. After that you need a new prescription.
Is it safe to stop Xanax (alprazolam) suddenly?
No. Stopping suddenly after regular use can cause withdrawal, including seizures. The dose should be lowered gradually with a prescriber.
Sources
- Xanax (alprazolam) prescribing information. DailyMed, US National Library of Medicine.
- FDA warns about serious risks and death when combining opioid pain or cough medicines with benzodiazepines. US Food and Drug Administration, 2016.
- FDA requiring Boxed Warning updated to improve safe use of benzodiazepine drug class. US Food and Drug Administration, 2020.
- Poison Help. Health Resources and Services Administration.
- Joint Clinical Practice Guideline on Benzodiazepine Tapering. American Society of Addiction Medicine, 2025.
- Controlled Substance Schedules. DEA Diversion Control Division.
- 21 CFR 1306.22, Refilling of prescriptions (Schedules III and IV). Electronic Code of Federal Regulations.
- Prescribing controlled substances via telehealth. US Department of Health and Human Services.
- BeSafeRx: Your Source for Online Pharmacy Information. US Food and Drug Administration.
- Safe Pharmacy. National Association of Boards of Pharmacy.
- One Pill Can Kill. US Drug Enforcement Administration.
- International drug control conventions. United Nations Office on Drugs and Crime.
- How much is alprazolam without insurance?. SingleCare, updated June 2026.
