Alprazolam (Xanax): Approved Uses, Boxed Warning and Risks

What alprazolam is

Alprazolam belongs to a class of medicines called benzodiazepines. The current brand labels are Xanax and Xanax XR, an extended-release tablet, and generic versions are also sold. MedlinePlus lists tablet, extended-release tablet, disintegrating tablet and liquid forms.

The FDA label states that alprazolam is a Schedule IV controlled substance. The label describes a potential for abuse and addiction, and federal rules apply to how controlled medicines are prescribed.

What it is approved for, and what the label does not cover

The Xanax label lists two uses, both in adults: the acute treatment of generalized anxiety disorder, and the treatment of panic disorder with or without agoraphobia. The Xanax XR label is narrower. It lists panic disorder, with or without agoraphobia, in adults, and does not list generalized anxiety disorder.

The label says safety and effectiveness have not been established in children and teens. MedlinePlus notes that the medicine may be prescribed for other uses, but it names none, so we do not list any off-label uses here.

On trauma, the VA's clinician guide on medications for PTSD says studies have not shown benefit for benzodiazepines in PTSD, and that their use is recommended against for treating it. The Xanax label also notes reports of irritability, hostility and intrusive thoughts when people with PTSD stopped alprazolam.

How it is thought to work

GABA is a chemical messenger that quiets activity between nerve cells. According to the label, alprazolam binds to a specific site on GABA-A receptors in the brain and strengthens that quieting signal. MedlinePlus puts it more simply: it works by decreasing abnormal excitement in the brain.

What taking it can be like

The label says blood levels of immediate-release alprazolam peak within 1 to 2 hours, and that its average half-life in healthy adults is about 11 hours, with wide variation from person to person. Older adults can have higher levels from the same amount, which is one reason MedlinePlus says it may not be recommended for people 65 or older.

A detail specific to this label: people with panic disorder have reported early morning anxiety and anxiety between doses while taking it as prescribed. If that happens, tell your prescriber. Do not take more or take it more often than prescribed.

Alprazolam can make you drowsy. The label advises against driving or using heavy machinery while taking it and against using alcohol or other medicines that slow the brain. MedlinePlus also says to talk with your doctor about grapefruit.

NIMH says benzodiazepines are usually prescribed for short periods and tapered slowly, since taking them over long periods may lead to tolerance or dependence. Tell your prescriber if you are pregnant, may become pregnant or are breastfeeding.

Side effects and warnings

The boxed warning is the FDA's strongest kind of label warning. It applies to everyone taking alprazolam. The label notes that risks of abuse, misuse and addiction exist even at recommended doses.

• Do not stop suddenly. Do not stop alprazolam or take fewer doses without talking to your prescriber. The label names seizures as the most important withdrawal symptom, and says some people have withdrawal symptoms lasting weeks to more than 12 months.
• Who should not take it: people with a known allergy to alprazolam or other benzodiazepines, and people taking strong CYP3A inhibitors such as the antifungals ketoconazole and itraconazole. Ritonavir is the listed exception and needs your prescriber's direction.
• Other interactions in the label: opioids, other sedating medicines, digoxin, nefazodone, fluvoxamine and cimetidine. MedlinePlus adds some allergy medicines and St. John's wort. Give your prescriber a full list of what you take.
• Common side effects: drowsiness, light-headedness, tiredness, headache, dizziness, irritability, dry mouth, nausea, constipation, and changes in appetite, weight or sex drive, per MedlinePlus. The label's trials also point to impaired coordination, low blood pressure and slurred speech.
• Mood: benzodiazepines may worsen depression, and the label reports episodes of hypomania and mania in people with depression. Families are told to watch for suicidal thoughts or worsening depression and tell the prescriber right away.
• Breathing: the label reports deaths in people with severe lung disease shortly after beginning treatment. Tell your prescriber about any lung or breathing problem, and about glaucoma, seizures, or kidney or liver disease.

Can it be managed online in Pennsylvania and New York

As of November 2026, a temporary federal rule (Federal Register, Fourth Temporary Extension) allows DEA-registered practitioners to prescribe Schedule II to V medicines by audio-video telemedicine without a prior in-person evaluation, under set conditions, through December 31, 2026. Rules may change after that date.

The rule permits telemedicine prescribing; it does not require it, and a visit may not end in a prescription for this or any medicine. A video visit also has limits: it cannot respond to a seizure or slowed breathing, so those need 911.

A licensed psychiatrist on our team, a Doctor of Osteopathic Medicine (DO) with more than three decades of practice, treats anxiety, depression and trauma by secure video for people physically located in Pennsylvania or New York during each visit. Read about online anxiety treatment and medication management, or see Pennsylvania and New York details. Whether it is an option for you is a decision for you and your prescriber. Ask us whether our psychiatrist can help. Ask us about fees, insurance and ages as well.

Our therapists do not prescribe. They see clients in Pennsylvania, West Virginia, Arizona, Colorado and Florida, not New York, so a New York reader can get psychiatry here but not therapy for anxiety here. Other medicine pages are in our medication list.

If you are in crisis, call or text 988, or call 911. Locascio Wellness does not provide emergency services. Crisis resources are also listed on our site. For a possible overdose, MedlinePlus says to call Poison Help at 1-800-222-1222, and to call 911 if the person has collapsed, had a seizure, has trouble breathing or cannot be awakened.