Zolastin

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Medically reviewed

Marina Burgos

Last updated on 10/01/2026

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Zolastin

Quick Facts

Property Description
Active ingredient Alprazolam (INN)
Form Oral Tablets (Immediate and Extended-Release), Oral Solution
Pharmacological class Benzodiazepine (Triazolo-benzodiazepine)
General purpose Management of anxiety and panic disorders
Origin Synthetic Compound

What Type of Medicine is Zolastin (Alprazolam)?

Zolastin is the trade designation for a prescription-only medication identified by its single active ingredient, Alprazolam, which is a synthetic compound formulated for oral use. It belongs to the benzodiazepine pharmacological class, specifically characterized as a triazolo-benzodiazepine. Alprazolam is a potent short-acting anxiolytic. Zolastin functions as a central nervous system (CNS) depressant.


What are the Available Forms of Zolastin?

The medication is a single-ingredient product supplied exclusively for the oral route of administration, meaning it contains only Alprazolam and its necessary inert components. Zolastin is available in multiple high-level dosage forms, including standard immediate-release tablets for rapid action, and extended-release tablets designed to deliver the effect slowly over a sustained period. The availability of these distinct oral formats allows healthcare professionals to tailor relief, addressing both sudden, acute symptoms and underlying, persistent anxiety conditions.


What is the General Purpose of Zolastin?

The primary purpose of Zolastin is the management of anxiety and panic disorders by stabilizing overstimulated brain activity. It works by enhancing the effects of the brain's natural inhibitory messenger, gamma-aminobutyric acid (GABA), thereby promoting a generalized calming effect. This mechanism provides a way to reduce neuronal excitability, typically used to help diminish feelings of intense worry, tension, and acute fear. A key attribute of Alprazolam is its generally rapid onset of action, which is particularly beneficial for quickly easing the severity of sudden anxiety or panic.

Regulatory References

  1. NIH LiverTox

What side effects are possible with Zolastin?

Possible Side Effects and Safety Information

The safety profile of Zolastin (Alprazolam) is characterized primarily by its effects on the central nervous system (CNS), which align with its classification as a triazolo-benzodiazepine. Adverse reactions are grouped and classified by frequency in official regulatory documents, detailing expected and less common effects.


Regulatory Classification of Adverse Reactions

Classification Examples of Reactions Affected System-Organ Class
Very Common Sedation, Somnolence (Drowsiness) Nervous System Disorders
Common Ataxia, Fatigue, Dizziness, Constipation, Memory impairment, Confusional state, Changes in appetite/weight Nervous System, Gastrointestinal, Psychiatric, Metabolism
Uncommon Mania, Hostility, Hallucination, Abnormal behaviour, Amnesia Psychiatric Disorders

Serious Adverse Reactions and Safety Constraints

The safety labeling includes warnings regarding the potential for physical and mental dependence and misuse, which increases with the length of treatment. Abrupt discontinuation is associated with severe withdrawal reactions, including potentially life-threatening seizures. A major safety constraint involves the concomitant use with opioids, which significantly increases the risk of profound sedation, respiratory depression, coma, and death due to additive CNS depressant effects.


Population and Contextual Safety Notes

Regulatory information specifies that older adults have an increased risk of adverse effects like confusion and unsteadiness, contributing to a higher risk of falls. The medicine is contraindicated in individuals with conditions such as severe hepatic insufficiency and acute narrow-angle glaucoma. Furthermore, specific risks related to neonatal sedation and withdrawal are documented if used during the third trimester of pregnancy.

Overdose and Emergency Response

Overdose and When to Seek Help

Any suspected overdose of Zolastin (alprazolam) requires immediate medical attention. Government regulatory documents describe the overdose profile as a progression of central nervous system (CNS) depression, ranging from mild to potentially life-threatening.

Domain Official Regulatory Statement
Documented Manifestations Overdose symptoms are extensions of pharmacological activity, characterized by CNS depression, including somnolence, confusion, ataxia (impaired coordination), and diminished reflexes.
Severe Outcomes Severe manifestations include respiratory depression, hypotension, and coma. Death has been reported, particularly when alprazolam is ingested with other CNS depressants, notably alcohol.
Immediate Action Immediate medical attention or contacting emergency services is the mandated action for any suspected overdose. Management is primarily symptomatic and supportive, requiring close monitoring of vital signs and potential hospitalization.
Special Considerations The benzodiazepine antagonist Flumazenil is documented as a countermeasure but is generally cautioned against due to the risk of inducing convulsions. Official labeling identifies elderly patients and those with compromised respiratory function as populations more susceptible to severe overdose effects.

Therapeutic Uses of Zolastin

What Zolastin Treats: Main Uses and Benefits

Zolastin is relevant for its supportive therapeutic benefit in managing conditions marked by increased discomfort or tension, focusing on easing the overall symptom burden that can disrupt a patient’s daily stability. It is commonly used for managing specific anxiety and panic disorders, including Generalized Anxiety Disorder (GAD) and Panic Disorder with or without agoraphobia.

The medication is applied in clinical settings that involve acute or unstable symptom patterns, such as sudden, intense panic attacks, and persistent states characterized by excessive worry and mental tension. It helps address symptom clusters that may become intense or disruptive, contributing to supporting day-to-day comfort during symptomatic periods. This use is often summarized as:

“Provides support that helps ease the overall symptom burden.”

Management of Acute and Persistent Symptoms

Zolastin assists with supporting functional stability, offering symptomatic support to moderate acutely disruptive manifestations like palpitations and overwhelming fear. It is relevant when supportive symptom management is appropriate for symptoms of anxiety, tension, and motor restlessness.


Quick Fact: Support for Heightened Tension Symptoms Zolastin is commonly used to help manage symptoms related to heightened physiological activity and excessive apprehension, assisting patients with coping more steadily with symptom fluctuations.

Eligibility and Restrictions for Use

Zolastin (Alprazolam) eligibility is strictly defined by regulatory authorities and is determined by age, physiological status, and existing health conditions.

Population Category Eligibility Status (Regulatory Wording)
Approved Use Adults (ge 18 years of age) for the approved indications.
Contraindicated Use Patients with known hypersensitivity to alprazolam or any benzodiazepine.
Contraindicated Use Patients with acute narrow-angle glaucoma, severe hepatic insufficiency, or severe respiratory insufficiency.
Contraindicated Use Patients taking concomitant strong CYP3A inhibitors (such as ketoconazole or itraconazole).

Age-Related Eligibility: Safety and effectiveness have not been established in the pediatric population (under 18 years of age), and use is not recommended. For older adults, a dosage reduction is officially recommended due to increased sensitivity and the risk of over-sedation.

Condition-Based Restrictions: Use requires caution and may necessitate a lower dose in patients with mild to moderate hepatic impairment or renal impairment. Breastfeeding is not recommended as the drug is excreted in human milk. Use in pregnancy is permitted only when clinical benefit outweighs potential risk. Furthermore, additional caution is required for patients with a history of substance abuse or existing depressive symptoms.

What should I know about interactions with other medicines?

Interactions with other medicines and products

This section outlines interaction patterns documented in government regulatory sources, such as the FDA and EMA.

Classification Interacting Agents and Official Outcome
Contraindicated Combinations Strong CYP3A Inhibitors (e.g., oral Ketoconazole, Itraconazole): Formal prohibition due to significant impairment of metabolism and marked increase in Zolastin plasma concentrations.
Serious Pharmacodynamic Risk Opioids and Alcohol: Documented additive Central Nervous System (CNS) depressant effects, increasing the official risk of profound sedation and respiratory depression.
Exposure-Altering Metabolism CYP3A Inhibitors (e.g., Fluvoxamine, Nefazodone, Macrolides): Expected to increase plasma exposure of Zolastin. CYP3A Inducers (e.g., Carbamazepine): Expected to decrease plasma exposure, potentially reducing efficacy.

Other Documented Interaction Notes

Certain substances and conditions are also documented to alter Zolastin exposure. Cigarette smoking is noted to reduce Zolastin concentrations by up to fifty percent. Concomitant use with Digoxin is documented to increase the risk of Digoxin toxicity. Furthermore, changes in drug metabolism (ADME) have been reported in both geriatric patients and those with hepatic impairment, affecting Zolastin clearance and requiring official consideration. This interaction profile is strictly defined by metabolic and pharmacodynamic constraints.

Mechanism of Action

Inhibition of Janus Kinase ( JAK) Enzymes

Zolastin is an oral, small-molecule agent that works by binding directly to and inhibiting the activity of Janus Kinase ( JAK) enzymes inside the cell, specifically JAK1, JAK2, and JAK3. This binding prevents the JAK enzymes from becoming phosphorylated (activated). The JAK enzymes are essential components of the downstream signaling cascade initiated when various cytokines and growth factors bind to their receptors on the cell surface.


Interruption of Immune Signaling Cascades

The inhibition of JAK activity halts the entire JAK/ STAT signaling cascade. By suppressing JAK activation, Zolastin prevents the subsequent phosphorylation and dimerization of Signal Transducer and Activator of Transcription ( STAT) proteins. This interference prevents the STAT proteins from translocating into the nucleus and binding to DNA, thereby blocking the activation of gene transcription for various pro-inflammatory and immune-related genes.


Resulting Immunological Modulation

This molecular interruption modulates the JAK/ STAT-driven signaling in immune and inflammatory cells. The functional consequence is a reduction in the expression and production of numerous key pro-inflammatory mediators, leading to limited cellular proliferation and a modification of the overall immunological signaling landscape.

Dosage and Administration Information

Zolastin (alprazolam) is administered solely by the oral route and follows specific protocols for dosing and duration. The medicine is available in immediate-release (IR) tablets taken multiple times per day and extended-release (XR) tablets taken once daily.

The initial dosage is determined by the specific condition being managed. For Generalized Anxiety Disorder (GAD), the initial dose is typically 0.25 mg to 0.5 mg three times daily, while for Panic Disorder, the initial IR dose is 0.5 mg three times daily. Dose adjustments are made gradually, with increases occurring at intervals of every three to four days to determine the minimal effective level.


Administration and Special Populations

Administration Feature Official Instruction
Oral Intake May be taken with or without food. XR tablets must be swallowed whole and must not be crushed, chewed, or divided.
Older Adults / Hepatic Impairment A lower starting dose of 0.25 mg two or three times daily is required for IR forms in older adults and patients with impaired liver function.
Treatment Duration The overall course of treatment should be as short as possible and requires frequent reassessment of the need for continuation.

When discontinuing Zolastin, the dosage must be tapered gradually. Standard protocols recommend reducing the dose by no more than 0.5 mg every three days. This gradual reduction is an established procedure to ensure controlled cessation of therapy.

Recent Clinical Evidence

Research evidence / Overview of studies for Zolastin

This overview describes the research landscape for Zolastin, focusing on the types of clinical evaluations conducted, the patient groups studied, and what the evidence currently indicates—while also highlighting areas where more research is still needed. Research provides context about group patterns that have been observed, but findings describe group patterns, which does not guarantee whether an individual will respond similarly.

Evidence for Use in Panic Disorder

The most substantial research base for this condition involves studies exploring whether Zolastin affects Panic Disorder. This evidence primarily stems from short-term, randomized controlled trials (RCTs) that compared Zolastin to a placebo (an inactive substance) in adult outpatients. Research examined outcomes related to episodic or acute changes, specifically monitoring the weekly frequency of panic attacks over defined time intervals. Findings describe patterns observed in these studies, where researchers monitored changes in panic attack frequency compared to measurements taken from participants receiving placebo. Some trials described proportions of patients who reported achieving zero panic attacks during the acute, short-term treatment period.

Evidence for Use in Generalized Anxiety Disorder (GAD)

The clinical evaluation of Zolastin was also studied in populations with Generalized Anxiety Disorder (GAD). This research exploring short-term symptom changes was generally conducted using randomized controlled trials. Research examined outcomes related to systemic or functional imbalance by monitoring symptom intensity or variability using standardized anxiety rating scales. Studies examined outcomes reflecting muscle tension and restlessness. Research describes patterns observed in the comparison of anxiety scale scores between the groups studied.

Long-Term Studies and Follow-Up Data

Most of the definitive clinical evaluation studies for both Panic Disorder and GAD are limited to short-term follow-up durations. While research provides insight into short-term changes, evidence indicates that long-term effects remain to be fully established. There is limited information for long-term outcomes and the durability of the observed patterns beyond the acute treatment phase.

Evidence in Specific Patient Populations

The research base primarily evaluated adult populations diagnosed under standard criteria. Specific studies have explored data related to older adult populations. However, data for certain groups remain insufficient, meaning that the results apply only to the populations studied. Research provides limited insight into specific subgroups, such as pregnant individuals or children.

What Research Remains Uncertain About Zolastin

Follow-up durations were limited for the main efficacy studies, meaning that the long-term effects are not fully established. Findings are uncertain in the absence of systematic comparative evidence against all other available treatments for both anxiety and panic. Additionally, data for certain groups remain insufficient, and research provides limited information for long-term outcomes.

Frequently Asked Questions (FAQ)

Common questions about Zolastin (FAQ)


Q: Is Zolastin the type of drug that needs to be taken long-term?

A: Official documentation describes that the duration of treatment should be as short as possible and requires regular reassessment by a healthcare provider regarding the need for continuation. The controlled clinical trials that established the efficacy patterns for the approved uses were generally limited to short-term periods.


Q: What happens if a person stops taking Zolastin suddenly?

A: Abrupt discontinuation or rapid dosage reduction after continued use may precipitate acute withdrawal reactions, which can be severe and include life-threatening seizures. According to official information, a gradual tapering of the dose is required to reduce this recognized risk.


Q: Are there any common foods or drinks that should be avoided when taking Zolastin?

A: Official patient information often notes that grapefruit or grapefruit juice should be avoided. This is because these products can potentially alter how the medicine is metabolized in the body, which could change its concentration. Otherwise, the medicine can generally be taken with or without food.


Q: Can Zolastin be taken alongside common vitamins or mineral supplements?

A: Official interaction sections primarily detail risks with agents that affect the CYP3A4 enzyme, which is responsible for the metabolism of the active ingredient. There are typically no specific warnings documented against co-administration with standard vitamins or mineral supplements.


Q: Does Zolastin affect birth control or fertility?

A: Regulatory safety data includes information on Impairment of Fertility derived from non-clinical studies. However, official safety information does not contain a specific warning that the medicine affects the effectiveness of hormonal birth control medicines.


Q: Does Zolastin cause weight changes in people?

A: Changes in both appetite and weight are listed among the commonly reported adverse reactions in clinical trials. This is a descriptive finding reported in the official safety information.


Q: What research evidence exists about Zolastin's use in younger adult populations?

A: The clinical studies supporting the approved uses focused on adult populations (age 18 and older). Research evidence describes the observed patterns in those studied groups, which were primarily adults.


Q: What does official guidance say about missing a scheduled use of Zolastin?

A: Official patient guidance describes that if a person misses a scheduled dose, the recommendation is to take it as soon as possible. However, if it is almost time for the next dose, the guidance is to skip the missed dose and return to the regular schedule. Doubling doses is explicitly not recommended by official sources.


Q: What is the typical patient experience when transitioning off Zolastin?

A: When discontinuing the medicine, the dosage must be tapered gradually over a period of time, as recommended in official instructions. This process is designed to reduce the risk of severe withdrawal reactions, which can occur if the medicine is stopped too quickly.


Q: Why is it noted that Zolastin should not be used during pregnancy?

A: Use of the medicine during pregnancy can result in potential risks to the fetus, including Neonatal Sedation and Withdrawal Syndrome (NOWS), particularly with use late in pregnancy. Therefore, its use is generally advised only when the clinical benefit is considered to outweigh the potential risks.


Q: Does Zolastin have a generic version available?

A: Yes, the FDA has approved generic versions of the active ingredient, Alprazolam. These are available and listed in official government drug documents.


Q: How quickly do people typically feel the effects of Zolastin?

A: Following oral administration, the active ingredient is readily absorbed. According to official pharmacokinetic data, drug concentrations typically reach their peak in the bloodstream in one to two hours after use.


Q: Can Zolastin cause trouble sleeping or change sleep patterns?

A: Yes, sleep disturbances, including insomnia (trouble sleeping) and other changes to sleep patterns, have been reported as adverse reactions. However, sedation and drowsiness are also commonly reported effects.


Q: Is it true that Zolastin is sometimes used for things other than its main approval?

A: Official regulatory documents strictly detail only the uses for which the medicine has received approved indication, which is the management of anxiety and panic disorders. The use of any medicine for indications outside of its approved label is not contained in official regulatory text.


Q: Why is it described that Zolastin interacts with certain herbal supplements?

A: Official drug documents describe interactions with agents that affect the CYP3A4 enzyme. This enzyme is the primary way the active ingredient is metabolized. Some herbal supplements can also affect this enzyme, which may alter the exposure of the medicine in the body.


Q: How does the time of day affect when someone takes Zolastin?

A: The extended-release form of the medicine is officially specified to be taken once daily in the morning. The immediate-release form is officially intended for multiple uses per day.


Q: What is the risk of becoming dependent on Zolastin?

A: The potential for physical and psychological dependence and misuse is a recognized risk associated with this class of medicine. Official safety information states that this risk increases with higher dosages and longer duration of treatment.


Q: Is it normal to feel a mild headache when first starting Zolastin?

A: Headache is an adverse reaction that has been reported during clinical studies for the medicine. Official information groups this among the commonly observed effects.


Q: Can Zolastin be crushed or split if it is a tablet form?

A: Extended-release tablets must be swallowed whole and cannot be crushed, chewed, or divided. Immediate-release tablets, if manufactured with a score line, are generally designed to be divisible, as detailed in the official product description.


Q: Are there any reported cases of Zolastin affecting mood or anxiety levels?

A: Yes, official safety labeling includes warnings regarding the potential for worsening of depression. It also lists several psychiatric adverse reactions such as mania, hostility, and hallucination among the less common effects.


Q: What is the role of regulatory bodies in approving Zolastin?

A: Regulatory bodies like the FDA in the United States or the EMA in Europe are responsible for reviewing all clinical and non-clinical evidence. They determine if a medicine is safe and effective for its intended uses before it can be legally marketed and prescribed.


Q: Are there genetic factors that might influence how Zolastin works for someone?

A: Official pharmacokinetic data has shown that the maximal concentrations and elimination half-life of the active ingredient can be higher in individuals of Asian descent compared to Caucasian individuals. This indicates that population differences can exist in how the drug is metabolized.


Q: Why do some people report feeling nauseous when taking Zolastin?

A: Nausea is listed among the commonly reported adverse reactions in official safety information. The full regulatory description focuses on describing the observed effect rather than explaining the specific cause.


Q: Is Zolastin a controlled substance in the US?

A: Yes, the active ingredient is classified as a Schedule IV controlled substance under the U.S. Controlled Substances Act. This classification exists due to its recognized potential for abuse and dependence.


Q: Why is the research evidence for Zolastin described as limited or specific?

A: The clinical evidence base is described as limited because the duration of the main efficacy studies was short-term. Official documents note that this means the long-term effects of treatment are not fully established by the definitive research.


Q: What is the chemical name of the compound in Zolastin?

A: The active ingredient is Alprazolam. Its chemical name, as defined in official regulatory documents, is 8-Chloro-1-methyl-6-phenyl-4H-s-triazolo[4,3-a][1,4]benzodiazepine.


Q: What if I experience one of the less common side effects mentioned in the drug information?

A: Official patient counseling information describes that it is advised to contact a healthcare professional if any adverse reaction occurs while taking the medicine. This is a general guideline for receiving professional medical guidance.


Q: What is the purpose of the 'Risk Evaluation and Mitigation Strategy' (REMS) associated with Zolastin, if any?

A: A Risk Evaluation and Mitigation Strategy (REMS) is a drug safety program that the FDA can require for certain medications with serious safety concerns. Its purpose is to ensure the benefits of the medicine outweigh its risks by reinforcing safety actions and educational materials for the public and healthcare providers.

How should Zolastin be stored and disposed of?

How to Store and Dispose of Zolastin

Zolastin (Alprazolam) must be stored and handled according to specific conditions defined in official regulatory labeling to ensure product stability and safety.

Requirement Official Condition
Temperature Store at controlled room temperature, between 20 C and 25 C (68 F and 77 F).
Container Keep the product in the original container, tightly closed, to maintain protection from moisture.
Child Safety Must be stored out of the sight and reach of children at all times.

For disposal, unused or expired Zolastin should be handled through official channels. The preferred method is using a drug take-back program. If this is unavailable, the medicine should be mixed with an unpalatable substance (like used coffee grounds) and sealed in a bag before discarding in household trash; do not flush it down the toilet.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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