Entact

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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 Entact

Property Description
Active Ingredient Escitalopram (as oxalate salt)
Form Film-coated tablet, Oral solution
Pharmacological Class Selective Serotonin Reuptake Inhibitor (SSRI)
Common Use Support for mood and anxiety regulation
Origin Synthetic, S-enantiomer derivative

What Type of Medicine is Entact?

Entact is a prescription-only, psychotropic agent classified as a Selective Serotonin Reuptake Inhibitor (SSRI) and broadly categorized as an antidepressant. This class of medication is specifically designed to interact with the central nervous system to help manage and stabilize emotional states. As a modern SSRI, Escitalopram is distinguished by its highly targeted pharmacological approach, focusing primarily on a single neurochemical system, which differentiates it from older, less-selective groups of mood-regulating drugs. Its high receptor selectivity is a key characteristic observed in pharmacological research.

Composition, Origin, and Available Forms

The core active ingredient in Entact is Escitalopram, a synthetic compound that exists as the purified S-enantiomer of Citalopram. Escitalopram is administered as a single active ingredient product, typically supplied as the oxalate salt. Escitalopram is an S-citalopram derivative, characterized by its chemical purity and specific molecular structure. This purification process, where the R-enantiomer is excluded, represents a defining feature of the medication. For patient convenience, the drug is manufactured primarily in forms suitable for oral administration, including a film-coated tablet and an oral solution.

General Purpose and Mechanism Principle

The general purpose of Entact is to support the regulation of affective and anxiety states by addressing underlying neurochemical imbalances. Its core function involves the inhibition of presynaptic serotonin reuptake, meaning the medication helps maintain higher levels of the neurotransmitter serotonin in the brain's communication pathways. This mechanism is intended to support long-term mental and emotional equilibrium.

Regulatory References

  1. National Institutes of Health (NIH)

What side effects are possible with Entact?

Official Safety Profile and Adverse Reactions

The possible adverse reactions associated with Escitalopram (Entact) are formally classified by frequency and grouped according to the body system affected, based on official regulatory documents.

Adverse effects listed as Very Common (occurring in 1 in 10 patients or more) include Nausea and Headache.

Common adverse reactions (occurring in 1 to 10 in 100 patients) involve several body systems and include effects such as Insomnia, Somnolence, Dizziness, Diarrhoea, Constipation, Dry mouth, and changes in sexual function, such as Decreased libido and Ejaculation disorders.

Reactions classified as Uncommon or Rare include events affecting the heart, liver, and nervous system.


Serious and Time-Related Safety Considerations

Specific serious adverse reactions highlighted in regulatory labeling include Serotonin Syndrome, a potentially life-threatening condition associated with excessive serotonin activity, and the rare metabolic disorder Hyponatraemia (low sodium levels). The label also documents a risk of QT interval prolongation, an electrical change in the heart, leading to dose constraints.

Safety notes for specific populations include an officially documented increased susceptibility to Hyponatraemia in older adults (aged 65 years and over). Time-related patterns are also noted: effects such as Anxiety and Insomnia may be observed at the start of treatment and generally resolve with continued use, while abrupt cessation is associated with a Drug withdrawal syndrome.

Overdose and Emergency Response

Overdose and when to seek help

The official regulatory profile for Entact (Escitalopram) strictly documents the clinical manifestations and the emergency actions required in case of overdosage.


Documented Overdose Manifestations

Overdose most often affects the Central Nervous System (CNS), with documented presentations including seizures, somnolence, and altered mental status that can progress to coma. Common autonomic and systemic manifestations involve nausea, vomiting, tachycardia, and profuse diaphoresis. Severe effects on the Cardiovascular System are a critical regulatory concern, notably QTc interval prolongation and the risk of wide complex tachyarrhythmias.


Severe Outcomes and Required Actions

A potentially life-threatening complication explicitly listed is the onset of Serotonin Syndrome, which is characterized by a specific triad of changes. Due to the high risk of severe outcomes, including fatal events like Torsade de Pointes (TdP), regulators state that patients must seek immediate medical attention for all severe symptoms. Furthermore, the medication must be discontinued immediately if Serotonin Syndrome is suspected.


Management and Monitoring

Official management relies on symptomatic and supportive treatment. This includes standard measures such as maintaining an airway and ensuring adequate oxygenation. Procedural steps described involve gastrointestinal decontamination and the use of activated charcoal. Regulatory documents confirm that no specific antidote is known for Escitalopram overdose. Prolonged cardiac monitoring is recommended due to the potential for delayed arrhythmia onset.

Therapeutic Uses of Entact

What Entact Treats: Main Uses and Benefits

The medication is used to manage major depressive and generalized anxiety disorders. When applied in these therapeutic domains, Entact is commonly used to provide supportive therapeutic benefit to patients experiencing heightened symptomatic discomfort. It is also applicable in addressing more specialized patterns, including the management of panic disorder, social anxiety disorder, and the distress associated with intrusive thoughts and compulsive urges of OCD.

The primary therapeutic focus is on assisting with conditions characterized by persistent low mood, excessive worry, and sustained emotional tension.

“The primary therapeutic focus is on assisting with conditions characterized by persistent low mood, excessive worry, and sustained emotional tension.”

Quick Fact: Support for Pervasive Anxiety and Depressive Symptoms

This medication is applied in clinical settings marked by heightened patient distress and contributes to a supportive therapeutic benefit that may help contribute to easing the overall symptom load, providing supportive relief when symptoms interfere with routine activities.

Regulatory References

  1. NIH MedlinePlus Drug Information on Escitalopram

Eligibility and Restrictions for Use

Entact (escitalopram) is primarily approved for the treatment of Major Depressive Disorder (MDD) in adults and adolescents aged 12 years and older. It is also used to treat Generalized Anxiety Disorder (GAD) in adults. In some regions, it may be indicated for other anxiety-related conditions, such as Social Anxiety Disorder (SAD), Obsessive-Compulsive Disorder (OCD), and Panic Disorder.


Contraindications

Entact should not be used in individuals who have a known allergy to escitalopram or citalopram. Additionally, it is contraindicated for use with the following:

  • Monoamine Oxidase Inhibitors (MAOIs): Use is forbidden concurrently or within 14 days of stopping an MAOI (including linezolid and intravenous methylene blue), due to the risk of serotonin syndrome.
  • Pimozide: Concomitant use with this antipsychotic medication is contraindicated, as Entact can increase its concentration and prolong the QT interval, a risk for serious heart rhythm problems.

Special Precautions

Caution is advised for patients with a history of seizures, bipolar disorder, bleeding disorders, narrow-angle glaucoma, or cardiac conditions that cause QT interval prolongation. A reduced maximum daily dose is often recommended for patients over 65 years of age and those with hepatic impairment.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory information for Entact (Escitalopram) describes specific combinations and substance classes that necessitate strict avoidance or caution due to documented interaction patterns.

Contraindicated Combinations

Co-administration with Monoamine Oxidase Inhibitors (MAOIs), including the antibiotic Linezolid and Intravenous Methylene Blue, is contraindicated due to a high risk of Serotonin Syndrome. A mandatory minimum 14-day washout period is required when switching between Escitalopram and psychiatric MAOIs. Co-administration with the antipsychotic Pimozide is also contraindicated due to the documented risk of QT interval prolongation.

Pharmacodynamic and Pharmacokinetic Interactions

Interaction Type Interacting Substances/Class Documented Outcome
Pharmacodynamic Serotonergic agents (e.g., Triptans, Tramadol), St. John's Wort Increased risk of Serotonin Syndrome (cumulative effect).
Pharmacodynamic Drugs that interfere with Hemostasis (e.g., NSAIDs, Warfarin) Increased risk of abnormal bleeding events.
Pharmacokinetic CYP2C19 & CYP3A4 Inhibitors (e.g., Cimetidine) May increase Escitalopram plasma concentrations (reduced clearance).
Pharmacokinetic CYP2D6 Substrates (e.g., Metoprolol) Escitalopram increases the plasma concentration of the co-administered drug.

Other Interactions

Consumption of alcohol is not recommended due to potential additive effects on alertness. Population-specific notes indicate that patients with hepatic impairment may exhibit altered clearance, leading to increased drug exposure.

Mechanism of Action

How Entact Works

Entact's mechanism is defined by a highly targeted, two-phase process within the Central Serotonergic System. The drug acts exclusively to modulate signaling dynamics, leading to a gradual long-term functional change within affective pathways.


Selective Blockade of the Serotonin Transporter

The core action involves the high-affinity inhibition of the Serotonin Transporter (SERT), the primary molecular target on presynaptic neurons. By preventing the reuptake of the neurotransmitter serotonin (5-HT), Escitalopram immediately elevates the concentration of 5-HT in the synaptic cleft, enhancing transmission duration. This selective action focuses entirely on the 5-HT pathway.


Time-Dependent Neuronal Pathway Adaptation

The resulting sustained increase in synaptic 5-HT initiates a complex adaptive cascade necessary for the sustained change in 5-HT signaling, involving the gradual desensitization of inhibitory 5-HT1A autoreceptors. This removal of the neuronal "brake" allows for a robust, long-term output of 5-HT, supporting the slow, systemic re-tuning and functional modulation of neural circuits in the limbic system that are associated with affective network activity. This process dictates the necessary time-lag before the mechanism yields its full physiological consequence.

Dosage and Administration Information

Administration and Dosage Principles

Entact (Escitalopram) is administered exclusively through the oral route, available as a film-coated tablet (5 mg, 10 mg, 20 mg) and an oral solution (1 mg/mL). The medication is taken once daily, and the medication may be administered with or without food, allowing for flexible timing in either the morning or evening.

The standard starting dose for adults with Major Depressive Disorder or Generalized Anxiety Disorder is 10 mg once daily. If necessary, the dose may be increased up to the maximum recommended daily dose of 20 mg, provided a minimum interval of one week has passed since the initial dose. For adolescents (12+ years) being treated for MDD, the initial dose is also 10 mg, but any dose adjustment to 20 mg requires a minimum of three weeks.

Population Adjustments and Procedural Conditions

Special administration rules apply to certain populations and situations. For older adults (aged 65 years and over) and patients with hepatic impairment, the recommended daily dose should not exceed 10 mg. Both 10 mg and 20 mg tablets are scored and can be divided, while the oral solution requires accurate measurement. If a dose is missed, standard procedure involves taking the next dose at the regular scheduled time without doubling the dose to compensate. Furthermore, a 14-day washout period is required when switching to or from MAOIs. The process of discontinuing treatment always necessitates a gradual dose reduction (tapering).

Recent Clinical Evidence

Research Evidence / Overview of Studies for Entact

Evidence Landscape for Major Depressive Disorder (MDD)

The research for Entact (Escitalopram) in Major Depressive Disorder (MDD) primarily involved numerous short-term randomized controlled trials (RCTs) comparing the medicine to a placebo (inactive substance) or to other active treatments. These studies were used in research exploring how symptoms change over time. The research examined a variety of outcomes, including measurements of symptom intensity or variability using validated rating scales. Researchers also monitored the proportion of participants who met pre-defined criteria for measured change, often referred to as response or remission criteria.

Studies reported measurements of outcomes reflecting daily functioning or activity level over the typical 6-to-8-week trial period. Additionally, studies explored the use of the medicine in relapse prevention trials involving people who had already achieved a stable period. These continuation and maintenance studies extended the observation period for up to 6 months or longer to describe the frequency of relapse during these extended time intervals.

Research Evidence for Anxiety Disorders

The evidence base for anxiety disorders includes several controlled studies for both Generalized Anxiety Disorder (GAD) and Social Anxiety Disorder (SAD). These conditions are often characterized by fluctuating or episodic manifestations of excessive worry and tension. The research describes how different forms of anxiety were measured across various populations.

Research in Generalized Anxiety Disorder (GAD)

Research for GAD primarily involved 8-week, placebo-controlled RCTs involving adult populations. The studies monitored outcomes related to physiological strain, including measurements on specialized anxiety rating scales (HAM-A) and general clinical status scales. Studies report how the severity of symptoms evolved in the observed populations during the acute treatment period.

Research in Social Anxiety Disorder (SAD)

The medicine was studied for use in SAD through short-term RCTs (typically 12 weeks) and relapse prevention studies. Research examined outcomes related to physical discomfort and outcomes describing episodic or acute changes linked to social situations, using scales like the LSAS to measure social anxiety symptoms. However, comparative evidence is limited for certain indications when assessing the medicine against a comprehensive range of alternative treatments.

Frequently Asked Questions (FAQ)

Common questions about Entact (FAQ)

Q: Can escitalopram be taken while pregnant or breastfeeding?

A: Official drug information addresses the use of escitalopram during pregnancy and breastfeeding. Taking it, particularly in the third trimester of pregnancy, has been associated with an increased risk of poor neonatal adaptation symptoms in the newborn. Furthermore, the active substance is known to pass into breast milk.

Regulatory documents state that use during pregnancy or breastfeeding involves balancing the potential risks to the child against the benefits of treating the mother’s condition, a discussion typically held with a healthcare professional.

Q: Can escitalopram cause changes in weight (gain or loss)?

A: Weight changes have been reported as a side effect in regulatory documents. In clinical trials, weight increase has been reported as an uncommon event, and weight decrease has been noted as a rare event. It is recognized that appetite and body weight may change during treatment with this class of medication.

Q: Should I avoid driving or operating machinery while taking this medication?

A: Official regulatory guidance advises caution. Escitalopram may affect judgment, thinking, and motor skills, as it can cause drowsiness or dizziness.

Due to the potential for the medication to affect these abilities, the official product information recommends caution regarding driving or operating hazardous machinery, pending individual experience with the medication.

Q: Is escitalopram addictive or habit-forming?

A: Escitalopram is not typically considered to be a substance with abuse potential. However, regulatory information emphasizes that the medication should not be stopped abruptly.

Suddenly stopping treatment may lead to a discontinuation (withdrawal) syndrome. Therefore, discontinuation requires a gradual dose reduction, managed by a healthcare professional.

Q: What are the signs of an allergic reaction to escitalopram?

A: Severe allergic reactions are rare but possible. Official drug information states that signs may include hives, rash, difficulty breathing, or swelling of the face, lips, tongue, or throat.

If signs of a serious allergic reaction occur, official guidance indicates seeking immediate medical attention is necessary.

Q: Can escitalopram affect my bone density or increase my risk of fractures?

A: Some patient information leaflets list an increased risk of bone fractures as a possible side effect. This has been predominantly reported in observational studies involving patients aged 50 years and older who were taking this class of antidepressant.

Q: Does escitalopram cause vivid dreams or nightmares?

A: Unusual dreams, including vivid dreams, are reported in official documents as a common side effect of escitalopram. Sleep disturbances are also a possible symptom if the medication is stopped suddenly.

The occurrence of troublesome or persistent side effects is typically a reason to consult with a healthcare professional.

Q: Can this medication cause excessive sweating or problems with body temperature regulation?

A: Increased sweating (hyperhidrosis) is listed as a common side effect based on clinical trial data. Excessive sweating, along with a sudden increase in body temperature, are also potential symptoms of the rare, but serious, condition known as Serotonin Syndrome.

Q: How long does it take for escitalopram to start working?

A: According to patient information, it may take several weeks of consistent use for the full therapeutic effect to manifest. Official information emphasizes that consistent administration is necessary for the therapeutic effect to become evident over this time period.

Q: Can escitalopram affect my eyes or vision?

A: Regulatory documents include warnings about the potential for escitalopram to cause pupil dilation (mydriasis). This effect may trigger an angle-closure attack in individuals who have a pre-existing condition called anatomically narrow angles.

This risk highlights why patients should ensure their healthcare provider is aware of any history of glaucoma.

Q: Do I need to take escitalopram with food?

A: No, official dosage and administration instructions indicate that escitalopram can be taken with or without food. The medication can be taken in either the morning or the evening. It is generally advised to follow the specific timing recommended by your prescriber.

Q: Is the generic version of escitalopram the same as the brand name?

A: By regulatory definition, authorized generic versions of a medication contain the exact same active ingredient in the same strength and dosage form as the brand name drug.

The regulatory process requires that the generic version demonstrate bioequivalence to the branded product, meaning it is absorbed and available in the body in the same way.

How should Entact be stored and disposed of?

How to Store and Dispose of Entact: Official Regulatory Requirements

The storage and disposal instructions for Entact (escitalopram) are strictly defined by regulatory labeling to maintain product stability and ensure public safety.

Storage Requirement Official Classification
Temperature Store at or below 30 C.
Protection Keep in original packaging; Protect from light and moisture.
Safety Keep out of the sight and reach of children.

Storage conditions are essential for ensuring the product remains stable until its official expiration date. Regarding disposal, unused or expired Entact must be managed according to local regulations. Regulatory documents generally prohibit disposing of this medicine via household waste or wastewater (flushing down the toilet), mandating instead the use of approved local pharmaceutical take-back programs.

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

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