Citabax

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Medically reviewed

Rosario Oropesa

Last updated on 22/12/2025

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 Citabax

Property Description
Active ingredient Escitalopram (as the oxalate salt)
Form Film-coated tablet
Pharmacological class Selective Serotonin Reuptake Inhibitor (SSRI)
General purpose Management of depressive and anxiety disorders
Origin Synthetic compound; single enantiomer
Status Prescription-only medicine (Rx)

What Type of Medicine Is Citabax and What Is Its Core Composition?

Citabax is a prescription-only medicinal product belonging to the pharmacological class known as Selective Serotonin Reuptake Inhibitors (SSRIs). The drug's sole active ingredient is Escitalopram, which functions as a specialized psychotropic agent intended to influence chemical processes in the central nervous system. This classification signifies its general function as a neurochemical support system. Escitalopram is the active enantiomer of Citalopram, reflecting its refined, targeted action.

The core composition utilizes the Escitalopram molecule, which is structurally categorized as a second-generation antidepressant. As a branded medication, Citabax is primarily positioned for adult patients requiring stability and management of mood disorders. Citabax, therefore, functions as a chemical tool to assist in the broader management of conditions like depressive disorders and generalized anxiety disorders, providing foundational support for the neurochemical environment.


Is Escitalopram a Synthetic Compound and What Is Its Form?

The active compound, Escitalopram, is a synthetic compound specifically engineered as a single enantiomer to enhance its targeted action. Citabax is supplied as a film-coated tablet intended for oral administration. The medication is a single-ingredient product, meaning its therapeutic effects stem entirely from the action of the S-form of the molecule. The film-coating also represents a differentiating feature, designed to ensure stable delivery and ease of swallowing.

This precise synthetic origin and structure differentiate Escitalopram from the older, less-specific compound, Citalopram (the racemic mixture). The drug's stable tablet form is designed for convenient and consistent delivery of the active substance. This foundational form and composition ensure that the primary mechanism, which increases the availability of the serotonin molecule, is delivered reliably for sustained effect.


What Is the General Purpose of This Serotonin Modulator?

The general purpose of this serotonin modulator is to enhance the functional availability of serotonin within the brain, a chemical messenger linked to emotional regulation and stability. By inhibiting the reabsorption (reuptake) of serotonin by nerve cells, Escitalopram helps facilitate greater signaling between neurons. Recognized for its role in mood stabilization, this supportive action is generally applied to help mitigate the persistent symptoms associated with anxiety disorders and depressive disorders. The core value provided by Citabax is its supportive function in helping establish and maintain the neurochemical balance necessary for managing these common conditions, enabling better overall mental health condition management.

Regulatory References

  1. U.S. National Library of Medicine, MedlinePlus

What side effects are possible with Citabax?

Possible Side Effects and Safety Information

The safety profile of Escitalopram (Citabax) is categorized in official regulatory documents based on the frequency and the physiological system affected. The most frequently reported adverse reactions, classified as Very Common (occurring in 1 in 10 patients or more), are nausea and headache.

Reactions categorized as Common (occurring in less than 1 in 10 patients) often involve the Nervous System (e.g., somnolence, dizziness, tremor) and Gastrointestinal System (e.g., dry mouth, constipation, diarrhoea). Effects on the Reproductive System, such as decreased libido, ejaculation disorder, and anorgasmia, are also commonly documented.

Serious Adverse Reactions and warnings are highlighted in regulatory labeling. The risk of suicidal thoughts and behaviors is noted as increased in children, adolescents, and young adults (up to 24 years old), especially during the initial few months of therapy and following dose changes. Other serious documented risks include the potential for Serotonin Syndrome, Hyponatraemia (low blood sodium), and cardiac abnormalities such as QT prolongation and Ventricular Arrhythmia (Torsade de pointes), the frequency of which is classified as Not Known.

Specific safety considerations apply to certain populations and clinical contexts. Older adults are noted to have a higher risk of developing hyponatremia. Caution is advised for patients with Hepatic Impairment and those with a history of mania or seizures. The development of Akathisia (restlessness) is documented to occur most often within the first few weeks of treatment.

Overdose and Emergency Response

An overdose of Escitalopram (the active ingredient in Citabax) is a medical emergency that requires immediate attention and is managed exclusively with supportive care. Seek immediate medical care or call emergency services if overexposure is suspected.

Documented Manifestations and Severe Outcomes Regulatory documentation lists several clinical signs of overexposure, including CNS effects such as dizziness, tremor, agitation, confusion, and somnolence. Gastrointestinal effects like nausea and vomiting, and cardiovascular signs such as tachycardia and hypotension, are also commonly reported.

Severe overdose carries the potential for life-threatening complications. These include the documented risk of Serotonin Syndrome, which requires intensive management, as well as neurological effects such as convulsions and coma. Cardiac toxicity, specifically QTc prolongation and ventricular arrhythmias, is a noted risk, making ECG monitoring advised for all patients. Severe outcomes are often associated with ingestion involving multiple other medications.

Official Management Statements As no specific antidote is known, regulatory guidance focuses entirely on symptomatic and supportive treatment. Necessary procedural steps include establishing and maintaining an airway and ensuring adequate oxygenation. Medical professionals may consider gastric lavage and the use of activated charcoal. It is officially stated that procedures like forced diuresis and dialysis are unlikely to be of therapeutic benefit.

Therapeutic Uses of Citabax

What Citabax Treats: Main Uses and Benefits

Citabax, with its active ingredient escitalopram, is a prescription medicine commonly used across therapeutic domains involving emotional and functional distress. It is primarily applied for the management of core conditions such as Major Depressive Disorder (MDD), Generalized Anxiety Disorder (GAD), Panic Disorder, and Obsessive-Compulsive Disorder (OCD).

This medication is relevant in clinical settings that involve pervasive symptoms of depressed mood, loss of interest, and excessive worry. It is often used during phases when symptoms become more noticeable or acute, creating noticeable functional strain and interference with daily functioning. The therapy generally supports emotional stabilization and may help reduce the likelihood of recurrent episodes. The support provided helps ease the overall symptom load and may assist with coping during difficult periods. This assistance provides symptomatic relief that contributes to improved day-to-day comfort and supports patients with maintaining functional stability in routine activities.


Quick Facts

Quick Fact: Management of Persistent Emotional Distress and Excessive Worry is considered relevant with this supportive therapy.

Regulatory References

  1. NIH MedlinePlus Drug Information

Eligibility and Restrictions for Use

Eligibility Scope

Category Official Regulatory Status
Populations for whom use is allowed Adults are eligible. Adolescents (ge 12 years) are eligible for Major Depressive Disorder (MDD). Pediatric patients (ge 7 years) are eligible for Generalized Anxiety Disorder (GAD).
Populations for whom use is contraindicated Patients with known hypersensitivity to escitalopram or citalopram; Concomitant use with Monoamine Oxidase Inhibitors (MAOIs), linezolid, intravenous methylene blue, or pimozide; Patients with known QT-interval prolongation or congenital long QT syndrome.
Age-related eligibility rules Use is not approved for MDD in patients under 12 years of age, nor for GAD in patients under 7 years of age. Older adults (ge 65 years) require a specific lower maximum recommended dose.
Condition-specific eligibility rules Hepatic impairment requires a reduced maximum recommended dose. Severe renal impairment (Creatinine Clearance <20 mL/min) mandates caution as data is limited. Unstable epilepsy warrants avoidance.
Pregnancy and lactation eligibility status Pregnancy status: Use only if the potential benefit justifies the potential risk to the fetus. Lactation status: Caution should be exercised when administered to a nursing woman.

Eligibility Classifications (High-Level)

Category Official Regulatory Classification
Eligibility severity classification Contraindicated (Absolute Prohibition); Not Recommended (Pediatric Use); Use with Caution (Conditional Use).

Connection to the overall eligibility profile

The official regulatory profile defines who can and cannot use Citabax by establishing absolute contraindications for patients taking MAOIs or those with a risk of QT prolongation. Use is conditional for specific populations defined by age or organ function limitations, where regulators specify required restrictions (e.g., lower dose for hepatic impairment) or classify use as not established in specific pediatric subgroups.

What should I know about interactions with other medicines?

The interaction profile for Citabax (Escitalopram) is defined by pharmacokinetic and pharmacodynamic constraints strictly outlined in official government regulatory documents. The profile sets formal restrictions and classifications for co-administration, which include mandatory prohibitions and requirements for separation.

Interaction Classification Officially Documented Restriction or Effect
Contraindicated Combinations MAOIs (including Linezolid and Intravenous Methylene Blue), Pimozide, and medicinal products known to prolong the cardiac QT interval.
Pharmacokinetic Interference Escitalopram is a substrate for CYP2C19 and a modest CYP2D6 inhibitor. Co-administration with CYP2C19 inhibitors can increase Escitalopram exposure; co-administration can increase the exposure of CYP2D6 substrate drugs (e.g., Desipramine).
Pharmacodynamic Risks Increased risk of Serotonin Syndrome with other serotonergic agents (e.g., Triptans, Tramadol, Lithium). Increased risk of abnormal bleeding with drugs that interfere with hemostasis (e.g., NSAIDs, Warfarin).
Timing & Substances A mandatory 14-day washout period must separate use with a psychiatric MAOI. Concomitant use with St. John's Wort is not recommended; Alcohol consumption is also not recommended.
Population Consideration Caution is advised in patients with hepatic impairment due to officially documented reduced oral clearance, potentially heightening interaction effects.

This framework requires a mandatory 14-day separation when transitioning to or from a psychiatric MAOI. Pharmacokinetic data documents that CYP2C19 inhibitors increase the drug’s plasma levels, while the drug’s modest CYP2D6 inhibition may increase the exposure of substrate medicines. These formal restrictions define the constraints for safe co-administration.

Mechanism of Action

The action of Escitalopram is defined by a precise, multi-stage mechanism in the central nervous system, focused exclusively on the serotonergic system to induce stabilization of the serotonergic signal and tone.

Selective Blockade of the Serotonin Transporter

The drug functions as a Selective Serotonin Reuptake Inhibitor (SSRI) by targeting the Human Serotonin Transporter ( hSERT). By binding to this protein, Escitalopram prevents the reabsorption of the neurotransmitter Serotonin (5-HT) back into the presynaptic nerve cell. This primary molecular action immediately raises the concentration of 5-HT within the synaptic cleft, establishing the necessary condition for increased functional signaling.

Time-Dependent Neuro-Adaptation and Stabilization

The final physiological consequence of the action is delayed because the initial surge in 5-HT activates inhibitory autoreceptors (such as 5-HT1A), which limit further 5-HT release. Over several weeks of consistent exposure, the drug's action induces the necessary desensitization (downregulation) of these regulatory autoreceptors. This neuro-adaptive cascade lifts the inhibitory brake, resulting in a sustained increase in functional 5-HT transmission.

Modulation of Affective Regulatory Circuits

The resulting stable increase in serotonergic signaling supports the modulation of circuits within the Central Nervous System (CNS) that regulate affective responses. This systemic modulation adjusts the neurochemical intensity of the brain's responses to stimuli, establishing a modified state of serotonergic signaling. The mechanism's effectiveness is constrained by the biological time required for this long-term adaptive process to finalize.

Dosage and Administration Information

The use of Citabax (escitalopram) follows a standardized approach to administration and course management.

Administration Guidelines

Parameter Administration Parameters
Route of Administration The medicine is taken orally in the form of film-coated tablets (5 mg, 10 mg, 20 mg) or an oral solution (1 mg/mL).
Standard Dosing Schedule For adults with Major Depressive Disorder (MDD) or Generalized Anxiety Disorder (GAD), the standard starting regimen is 10 mg once daily, with a maximum allowable dose of 20 mg once daily. Dose adjustments from 10 mg to 20 mg are typically assessed after a minimum of one week of treatment.
Frequency and Timing Administration follows a once-daily schedule. The dose may be taken in the morning or evening and is permitted with or without food.
Special Populations A maximum dose of 10 mg daily is generally recommended for patients aged 65 years and older and those diagnosed with hepatic impairment. Dose increases for adolescents (MDD, 12 years and older) occur after a minimum of three weeks.

Procedural Course Management

The course of use includes specific steps for initiation and cessation. The oral solution requires measurement using a dedicated device, and 10 mg and 20 mg tablets are scored for division. If a dose is missed, the standard protocol is to take it as soon as remembered. However, if the time is close to the next scheduled dose, the missed dose should be skipped entirely, and the regular schedule resumed; doses should not be doubled. Upon the decision to end therapy, the dose must be gradually reduced (tapered) over a period of at least one to two weeks. This procedural structure ensures proper dosing from the start of therapy through its defined conclusion.

Recent Clinical Evidence

Research evidence / Overview of studies for Citabax

This overview describes the scope of the official research and clinical studies conducted on the active compound in Citabax (escitalopram), focusing on the types of evidence that exist and the areas researchers have examined. This information summarizes evidence patterns and is not clinical advice.

Evidence for use in Major Depressive Disorder (MDD)

The research base primarily consists of numerous controlled trials, with studies exploring how symptoms change over time by comparing the compound against placebo. Research examined outcomes by monitoring severity scores on standardized rating scales. These trials typically included adults (18-65 years) and, in separate research, adolescents, focusing on individuals with moderate to severe symptoms. Long-term studies monitored outcomes related to the return of symptoms over several months. Findings describe patterns observed in the studies related to measurements of a low symptom state, or remission.

Evidence for use in Generalized Anxiety Disorder (GAD)

Research exploring short-term symptom changes in GAD relies heavily on randomized, placebo-controlled trials. These studies were used in research exploring how symptoms change over time by measuring outcomes reflecting daily functioning or activity level. The evidence has been evaluated in populations including adults across various age groups, and separate studies monitored children and adolescents. Research describes the changes measured during the study period, focusing on outcomes capturing phases of heightened symptom activity, such as excessive worry.

Key Limitations and Areas of Research Uncertainty

The total number of controlled trials specifically for Panic Disorder and Obsessive-Compulsive Disorder (OCD) is smaller compared to the research available for MDD and GAD. Follow-up durations were limited in many acute-phase studies, and limited long-term data are available for use over multiple years. Certainty remains low regarding the full range of outcomes for patients with complex, co-occurring conditions, which were often excluded from the core clinical trials. Research highlights that findings describe group patterns, not personal outcomes, meaning research does not determine whether an individual will respond similarly.

Key Studies & References

  1. Acute and long-term efficacy of escitalopram in panic disorder: a randomized, double-blind, placebo-controlled, paroxetine-referenced study
  2. National Institute for Health and Care Excellence (NICE) Clinical Guideline [CG123] - Generalised anxiety disorder and panic disorder in adults: management

Frequently Asked Questions (FAQ)

Common questions about Citabax (FAQ)


Q: What is the required "washout" period when switching to or from an MAOI?

Official regulatory documents state that a period of at least 14 days is required between stopping a Monoamine Oxidase Inhibitor (MAOI) and initiating Citabax. This mandatory 14-day separation is also documented when discontinuing Citabax before starting an MAOI intended to treat psychiatric disorders.


Q: Is weight gain a common side effect?

Official product information indicates that changes in weight and appetite have been reported. These reported changes include both increases and decreases in appetite and body weight.


Q: What is the risk of akathisia (restlessness)?

Regulatory documents list general restlessness as a common side effect of the medication. Akathisia (a form of motor restlessness) is an effect that has been reported, particularly as a symptom that may occur when treatment is discontinued.


Q: Can the oral liquid solution be flushed down the toilet?

This medication is not on the list of medicines the FDA recommends for flushing. The preferred method of disposal is through a drug take-back program. If a program is unavailable, official guidelines state that the medicine may be mixed with an undesirable substance, such as coffee grounds, and discarded in a sealed bag in the household trash.


Q: What happens if I drink alcohol with this medication?

Official product information advises against the consumption of alcohol while taking this medication. While clinical trials did not show Citabax enhances the effects of alcohol on thinking or motor skills, the combination may increase side effects like drowsiness, and the use of alcohol may interfere with the management of the underlying condition.

How should Citabax be stored and disposed of?

Storage Requirements

Citabax (citalopram) should be stored in the original container, tightly closed, at room temperature. It must be kept away from excess heat, moisture, and direct light, and should be protected from freezing to maintain its stability and effectiveness. Always place the medication in a secure location, out of the sight and reach of children and teenagers, and ensure all safety caps are locked.

Disposal Instructions

To dispose of unused or expired Citabax, follow official guidelines to prevent accidental misuse. Do not flush this medicine down the toilet or pour it down a sink. The best disposal method is a community drug take-back program or mail-back option. If these are unavailable, you may dispose of it in the household trash by mixing the tablets or solution with an undesirable substance, such as used coffee grounds or cat litter, sealing the mixture in a bag, and discarding it.

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

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