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Citalopram HEXAL

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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.

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Overview of Citalopram HEXAL

Citalopram HEXAL is a prescription-only synthetic medicinal product supplied by the pharmaceutical company HEXAL AG. It is classified as an antidepressant, with its identity established by the active substance, Escitalopram. It is designed for oral administration, typically manufactured as film-coated tablets or an oral solution.

Property Description
Active ingredient Escitalopram (as Escitalopram oxalate)
Form Film-coated tablets, Oral solution
Pharmacological class Selective Serotonin Reuptake Inhibitor (SSRI)
Origin/Status Synthetic compound, Prescription-only

Citalopram HEXAL: Definition and Pharmacological Classification

Citalopram HEXAL is categorized as a Selective Serotonin Reuptake Inhibitor (SSRI). This classification signifies the drug's specialized mechanism, focusing its biological action primarily on the neurotransmitter serotonin. This highly selective action is clinically recognized for its role in supporting the management of chemical imbalances in the brain. The SSRI class is generally considered a primary pharmacological approach for conditions involving mood and emotional dysregulation.

Composition, Form, and Differentiation

The sole active ingredient is the International Nonproprietary Name (INN) Escitalopram, usually present as the oxalate salt. Escitalopram is chemically defined as the purified S-enantiomer, which is the active mirror-image molecule of the older drug citalopram. The product is manufactured by HEXAL AG, often positioning it as a generic alternative to originator brands. The availability of both film-coated tablets and an oral solution provides options for patients with different administration preferences.

General Therapeutic Purpose

The general purpose of Citalopram HEXAL is to help regulate mood and emotional stability by restoring essential chemical balance in the brain. The drug achieves this by inhibiting the reuptake of serotonin into nerve terminals, thereby increasing its concentration in the synaptic clefts. This sustained elevation of the neurotransmitter supports enhanced signaling within the central nervous system pathways, which is the fundamental mechanism supporting emotional regulation.

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What side effects are possible with Citalopram HEXAL?

Possible Side Effects and Safety Information

The following details the officially documented adverse effects and safety characteristics of Escitalopram, the active substance in Citalopram HEXAL, as classified by government regulatory authorities.

Classification and Frequency of Adverse Reactions

Adverse reactions are grouped by the body system affected (System Organ Class) and tiered by frequency, based on reports from clinical trials and post-marketing surveillance. This framework helps communicate the potential risk profile.

Frequency Tier Definition (based on regulatory standards)
Very Common Occurs in 10% or more of patients (ge 1/10)
Common Occurs in 1% to less than 10% of patients (ge 1/100 to <1/10)

Very Common Reactions: The most frequently reported adverse effects include nausea (Gastrointestinal Disorders) and headache (Nervous System Disorders).

Common Reactions: These frequently affect the Nervous System (e.g., somnolence, insomnia, dizziness), the Gastrointestinal System (e.g., diarrhea, dry mouth, constipation), and the Reproductive System (e.g., ejaculation disorder, decreased libido, anorgasmia). Other common effects include fatigue and increased sweating.

Serious Safety Considerations

Official labeling highlights specific, clinically significant safety concerns. These include the risk of Serotonin Syndrome, a potentially life-threatening reaction, and the potential for QT interval prolongation, a cardiac effect which carries a risk of a serious irregular heart rhythm. Suicidal ideation and behavior are noted in young adults and adolescents, particularly early in treatment or during dose changes.

Specific safety constraints include a strict contraindication for concurrent use with Monoamine Oxidase Inhibitors (MAOIs). For older adults and patients with hepatic impairment, regulatory documents note that a lower starting dose is typically recommended.

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Overdose and Emergency Response

Overdose and when to seek help

Suspected overdose with Citalopram HEXAL requires that immediate medical attention be sought. Regulatory documents detail the potential for both mild and severe manifestations, making professional evaluation necessary for any suspected overexposure. The overdose profile is documented across major physiological systems.

Documented Manifestations and Serious Outcomes

Overdose presentations officially documented in prescribing information typically involve the central nervous and cardiovascular systems.

System Documented Symptoms / Signs
Central Nervous System Dizziness, somnolence, confusion, agitation, tremor, and convulsions. Severe outcomes include coma and signs of Serotonin Syndrome.
Cardiovascular System Hypotension, tachycardia, and potentially serious effects such as dose-dependent QT interval prolongation and the rare occurrence of Torsade de Pointes.

Required Emergency Management

Management of Escitalopram overdose is symptomatic and supportive. Official guidance emphasizes the need to establish and maintain an airway, ensuring adequate oxygenation and respiratory function. Procedures such as gastric lavage and administration of activated charcoal may be considered, and these measures should be undertaken as soon as possible after oral ingestion.

It is officially stated that no specific antidote is known for Escitalopram overdose. Cardiac and vital signs monitoring is required, and ECG monitoring is specifically advised for patients with co-existing conditions like liver impairment or those with risk factors for QTc prolongation.

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Therapeutic Uses of Citalopram HEXAL

Citalopram HEXAL is a supportive therapeutic option commonly used across key psychiatric domains where symptoms are moderate-to-severe and significantly disrupt daily stability. It is often applied in contexts requiring long-term management, relevant when supportive symptom management is appropriate for long-term stability.

The medication is used for managing the symptoms of conditions such as Major Depressive Disorder (MDD), Generalized Anxiety Disorder (GAD), Panic Disorder, Social Anxiety Disorder, and Obsessive-Compulsive Disorder (OCD). It helps address core symptom clusters like persistent depressed mood, excessive, uncontrollable worry, and intrusive thoughts.

“The primary benefit is that it may assist with managing symptoms related to persistent low mood and anxiety, helping to maintain a sense of stability.”

This provides support that helps ease the overall symptom burden in patients experiencing chronic apprehension, contributing to improved comfort during symptomatic periods.


Quick Fact: Relief for Anxiety and Mood Symptoms
Citalopram HEXAL is commonly used to help with patterns of emotional tension and distress that interfere with daily functioning, assisting with maintaining functional stability when symptoms are more noticeable.

Regulatory References

  1. NIH MedlinePlus Drug Information
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Eligibility and Restrictions for Use

This section summarizes the official eligibility and non-eligibility requirements for Citalopram, strictly based on regulatory documentation from authorities like the FDA and EMA.

Contraindicated Use

Citalopram is contraindicated (must not be used) in patients with:

  • Known Hypersensitivity to citalopram or any of its inactive ingredients.
  • Concomitant MAOI Therapy: Use with or within 14 days of stopping a Monoamine Oxidase Inhibitor (MAOI), including linezolid or intravenous methylene blue.
  • Concomitant QT-Prolonging Drugs: Concurrent use with other medications known to prolong the QT interval, such as pimozide.
  • Pre-existing Cardiac Conditions: Patients with congenital long QT syndrome, other conditions that prolong the QT interval, uncorrected hypokalemia (low potassium) or hypomagnesemia (low magnesium).

Restricted and Special Populations

Maximum dosage is officially restricted to 20 mg per day in several specific populations due to the increased risk of QT prolongation and altered drug clearance:

  • Older Adults (typically over 60 years of age).
  • Patients with Hepatic Impairment (liver disease).
  • Patients who are known or suspected CYP2C19 poor metabolizers.

Age and Life Stage Eligibility

  • Pediatric Patients (Under 18): Use is generally not approved for the primary indication, as safety and efficacy have not been established.
  • Pregnancy and Lactation: Use during pregnancy, particularly the third trimester, is associated with documented risks (e.g., Persistent Pulmonary Hypertension of the Newborn). Citalopram passes into breast milk, requiring caution and monitoring of the infant.
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What should I know about interactions with other medicines?

Interactions with other medicines and products

Citalopram HEXAL (Escitalopram) has specific, officially documented interaction patterns that necessitate restrictions on co-administration, as mandated by regulatory authorities.

Contraindicated Combinations and Timing Rules

Co-administration is contraindicated with Monoamine Oxidase Inhibitors (MAOIs), including non-selective MAOIs, the antibiotic Linezolid, and Intravenous Methylene Blue, due to the high regulatory risk of Serotonin Syndrome. Co-administration with the antipsychotic drug Pimozide is also contraindicated due to the potential for additive effects resulting in QT interval prolongation. When discontinuing a psychiatric MAOI before starting Escitalopram, or vice versa, a 14-day washout period must elapse.

Documented Pharmacokinetic and Pharmacodynamic Interactions

Escitalopram is a documented modest inhibitor of the CYP2D6 enzyme, which can lead to increased plasma exposure of drugs metabolized by CYP2D6 (e.g., Metoprolol). Conversely, the co-administration of CYP2C19 inhibitors (e.g., Omeprazole, Cimetidine) or CYP3A4 inhibitors may increase Escitalopram exposure by inhibiting its metabolic clearance. Furthermore, co-administration with other serotonergic agents (e.g., Triptans, St. John's Wort) increases the regulatory risk of Serotonin Syndrome (Pharmacodynamic interaction). Using the product with drugs affecting hemostasis (e.g., NSAIDs, Warfarin) increases the risk of abnormal bleeding.

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Mechanism of Action

Selective Inhibition of the Serotonin Transporter (SERT)

Escitalopram, the active component, exerts its primary action by selective reuptake inhibition of the Serotonin Transporter (SERT) protein in the brain. This molecular blockade immediately prevents the reabsorption of serotonin (5- HT) from the synaptic cleft, leading to an increased concentration of the neurotransmitter available to activate postsynaptic receptors.

Time-Dependent Neuroplastic Adaptation

The full physiological effect of the mechanism relies on slower, time-dependent neuroplastic changes that occur following the initial surge of synaptic serotonin. This includes the desensitization of 5-HT1 A autoreceptors, which removes an inhibitory brake on serotonin release. This physiological adaptation results in a sustained, increased functional flow of serotonergic signaling.

Functional Regulation of CNS Regulatory Circuits

The combined molecular action and subsequent neuroplastic adaptation result in the functional modulation of activity within the central nervous system pathways governing key regulatory circuits. This mechanism functionally regulates overactive or dysregulated serotonergic signaling, driving the long-term modulation of central regulatory circuits.

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Dosage and Administration Information

How to Use Citalopram HEXAL

Citalopram HEXAL is taken via the oral route of administration, consistent with its available forms as film-coated tablets or an oral solution. The tablets are supplied in strengths including 5 mg, 10 mg (scored), and 20 mg (scored), and the oral solution is concentrated at 1 mg per mL. Administration of the medicine is once daily, and it may be taken with or without food, providing flexibility in the daily schedule. Patients may administer the dose in the morning or evening.


Dosing Patterns and Adjustments

The standard adult regimen for treatment typically initiates with a dose of 10 mg once daily. This dose may be adjusted to a maximum of 20 mg per day, but dose increases are generally undertaken after a minimum interval of one week of treatment at the lower dose. Doses exceeding 20 mg have not consistently demonstrated additional benefit and are not generally recommended.

Specific adjustments to this regimen are defined for certain populations. For older adults (over 65 years of age) and those with hepatic impairment, the maximum recommended dose is typically restricted to 10 mg once daily. While no adjustment is necessary for mild to moderate renal impairment, caution is advised for patients with severe renal impairment. When treatment is to be concluded, a gradual dose reduction is the official procedural step recommended for stopping the medicine.

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Recent Clinical Evidence

Research Evidence / Overview of Studies for Citalopram HEXAL

Research evidence for Citalopram HEXAL (Escitalopram) is based on studies that examine the drug's properties, the populations included, and areas that remain to be fully explored. Research described here is limited to the study structures and reported patterns, without making claims about individual outcomes or offering clinical advice.


Evidence for Use in Major Depressive Disorder (MDD)

The research landscape for MDD includes numerous short-term, placebo-controlled Randomized Controlled Trials (RCTs). These studies were used in research exploring how symptoms change over time in adults, focusing on outcomes related to symptom intensity. Findings describe patterns observed in these studies regarding the measured changes in symptom scores. Research examined whether the patterns observed differed when compared to placebo.

Additionally, meta-analyses have been conducted. These large analyses help contextualize how findings evolved in the observed populations, sometimes suggesting patterns that vary from those seen with other active comparators. Research also was studied for people with more severe symptom presentations, with some trials reporting distinct patterns in this subgroup.


Evidence for Use in Anxiety and Related Disorders

Research has also explored the use of Citalopram HEXAL in various anxiety-related conditions, typically through short-term RCTs. These studies monitored patient-reported outcomes describing perceived discomfort and outcomes reflecting daily functioning or activity level.

Evidence for Generalized Anxiety Disorder (GAD) and Panic Disorder

For Generalized Anxiety Disorder, short-term trials and follow-up maintenance studies were observed in adults. Studies monitored outcomes capturing phases of heightened symptom activity. Similar controlled trials were evaluated in Panic Disorder, with research examining the measured characteristics of acute episodes.

Evidence for Obsessive-Compulsive Disorder (OCD)

Specific studies were evaluated in adults with Obsessive-Compulsive Disorder, which is a condition characterized by fluctuating manifestations. Research exploring short-term symptom changes was conducted, but long-term evidence is limited regarding whether the observed changes apply consistently to all different symptom types of OCD.


Duration of Evidence: Outcomes over Extended Durations and Follow-up

Research has examined outcomes over extended durations through maintenance studies, where subjects who had an initial measured change continued treatment for extended periods. These studies monitored time until a return of symptoms. It is important to know that results apply only to the populations studied in these follow-up designs. For all conditions, information regarding measured changes over many years is not fully established, and certainty remains low regarding outcomes after a pre-defined study duration.


Understanding the Evidence Quality and Uncertainty

Research describes group patterns observed in studies; it does not determine whether an individual will respond similarly. While the evidence base is large, particularly for MDD and GAD, several limitations are noted:

  • Insufficient Data for Certain Groups: Data for very young children or those with specific combinations of multiple conditions, remain insufficient.
  • Uncertainty in Comparative Findings: In research scenarios involving active comparators, the data show patterns related to measured changes when Citalopram HEXAL was studied against certain other treatments; the findings were mixed.
  • Limited Long-Term Information: As noted above, long-term effects are not fully established, and follow-up durations were limited in most initial short-term trials.

Key Studies & References Escitalopram MedlinePlus Drug Information

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Frequently Asked Questions (FAQ)

Common questions about Citalopram HEXAL (FAQ)

Q: What is the half-life of Escitalopram and how long does it stay in my system?

The terminal elimination half-life of Escitalopram, according to official product information, is reported to be approximately 27 to 32 hours. The half-life is a measure of the time it takes for half of the drug to be cleared from the body. This measure is a pharmacokinetic characteristic used by healthcare professionals to guide appropriate prescribing.

Q: Will escitalopram affect my blood pressure or heart rate?

Official warnings note that caution is advised for individuals with pre-existing heart issues. Escitalopram has the potential to cause changes in the heart's electrical rhythm, such as an irregular heartbeat or a change in heart rate (which could include a faster or lower heart rate). Official product documents detail specific cardiac conditions that contraindicate its use.

Q: Does escitalopram cause weight gain or changes in appetite?

Official reports indicate that changes in appetite and weight have been reported as possible effects. This can include either a decreased appetite resulting in weight loss, or in some cases, weight gain. Official documents state that the weight and growth of children and adolescents should be monitored.

Q: Is it safe to drive or operate heavy machinery while taking escitalopram?

The official product monographes caution that, like all psychoactive medicines, Citalopram HEXAL may potentially impair judgment, thinking, or motor skills. This means that a potential risk to the ability to drive a car or operate machinery must be considered. This is a general regulatory statement issued to ensure patient awareness.

Q: Will escitalopram affect my blood sugar levels or diabetes management?

Official patient information suggests that for individuals with diabetes, Citalopram HEXAL may make it more challenging to maintain stable blood sugar levels. Regulatory documents note that caution is advised when the medicine is used alongside insulin or other diabetes medications. There is a potential risk of low blood sugar, which is medically known as hypoglycemia.

Q: Can escitalopram cause problems with my vision?

Several visual changes have been reported in official documents, including temporary blurred vision and disturbances in the eye's ability to focus (abnormal accommodation). Eye pain and general visual disturbance have also been noted in clinical reports. A rare, serious ocular condition known as angle-closure glaucoma has been reported in post-marketing surveillance.

Q: Does escitalopram cause increased sensitivity to the sun (photosensitivity)?

A reaction known as photosensitivity, which is an increased sensitivity to sunlight, has been reported as a rare side effect in regulatory documentation. This is noted as the skin may be more susceptible to sunburn or rash when exposed to the sun. Official patient information provides this warning.

Q: Is escitalopram addictive or can I become dependent on it?

Escitalopram is generally considered non-addictive in clinical and regulatory literature. However, official safety authorities emphasize that abruptly stopping the medicine can lead to unpleasant physical and emotional withdrawal symptoms. For this reason, a gradual dose reduction (tapering) is officially recommended by health authorities for discontinuing the medication.

Q: Does escitalopram cause vivid dreams?

Vivid dreams are a reported symptom which may be noted by some users while taking the medicine. Official safety information indicates that this can sometimes be a manifestation of a discontinuation syndrome if the medication is stopped suddenly without the recommended gradual dose reduction.

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How should Citalopram HEXAL be stored and disposed of?

How to Store and Dispose of Citalopram (Escitalopram)

Citalopram (Escitalopram) must be stored according to regulatory requirements to ensure its stability. Tablets should be stored at Controlled Room Temperature (20° to 25°C) or not above 25 C or 30 C, depending on the specific label, and kept in their original container. It is mandatory to keep the medicine out of the sight and reach of children.


Stability and Disposal

The Citalopram oral solution has a stability limit, requiring any remainder to be discarded 16 weeks after the bottle is first opened. Unused or expired medication must not be thrown into household waste or flushed down the toilet. Disposal should be completed through a medicine take-back program or by returning the product to a pharmacist, following local pharmaceutical waste guidelines.

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

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