Siloam

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Medically reviewed

Marina Burgos

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 Siloam

Quick Facts

Property Description
Active ingredient Escitalopram (as the oxalate salt)
Form Tablets and Oral Solution
Pharmacological class Selective Serotonin Reuptake Inhibitor (SSRI)
General purpose Mood stabilization and relief of persistent worry
Origin Synthetic (chemically refined)

What Type of Medicine is Siloam (Escitalopram)?

Siloam is a medicinal product whose identity is defined by its active ingredient, Escitalopram, and its classification as a prescription-only antidepressant. Escitalopram belongs to the specific pharmacological group known as Selective Serotonin Reuptake Inhibitors (SSRIs). This places Siloam within the category of synthetically derived compounds that are clinically recognized for their ability to influence neurochemical activity in the central nervous system.

Composition, Origin, and Available Forms

The medication contains Escitalopram as its sole active component, utilizing the highly purified S-enantiomer, which is the specific molecule responsible for the clinical effect. This single-ingredient product is structurally derived from the older racemic precursor, Citalopram, marking its differentiation through enhanced chemical selectivity. For oral administration, Siloam is supplied in the forms of both solid tablets and a liquid oral solution, offering flexible options for patients.

General Purpose and High-Level Mechanism

The fundamental therapeutic purpose of Siloam is to support brain function by helping to stabilize emotional states and mitigate excessive, generalized worry. It achieves this by acting to increase the availability of the neurotransmitter serotonin in the signaling pathways between nerve cells. Escitalopram is a potent, highly selective inhibitor of the serotonin reuptake transporter. This mechanism is supported by pharmacological studies as a reliable method for the modulation of mood and anxiety-related pathways.

What side effects are possible with Siloam?

Possible Side Effects and Safety Information

The safety profile of Siloam, based on official regulatory documents, is characterized by the classification of adverse reactions according to their frequency and the system-organ class affected.

Frequency-Classified Adverse Reactions

Adverse effects are categorized by government regulators based on the incidence observed in clinical studies:

Classification Examples of Documented Reactions
Very Common (ge 10%) Headache, Nausea
Common (ge 1% to <10%) Insomnia, Dizziness, Somnolence (Drowsiness), Diarrhoea, Constipation, Dry mouth, Increased sweating, Fatigue, and Sexual Dysfunction (e.g., Anorgasmia, Ejaculation disorder)
Uncommon (ge 0.1% to <1%) Tachycardia (Fast heartbeat), Vision blurred, Syncope (Fainting), Urticaria, Alopecia (Hair loss), Gastrointestinal haemorrhage

Serious Adverse Reactions and Safety Constraints

Official labeling identifies specific, clinically important adverse reactions that require recognition. These include the potential for Serotonin Syndrome, a risk of Hyponatraemia (low sodium levels), and documented effects on cardiac repolarization, specifically QT Interval Prolongation. The regulatory safety summary also notes an increased risk of Suicidal Thoughts and Behavior in adolescents and young adults (up to age 24) when starting treatment or following dose adjustments.

Administration-agnostic constraints formally documented in regulatory text include that the medicine is contraindicated for use with Monoamine Oxidase Inhibitors (MAOIs) and in patients with a history of known QT prolongation. Caution is further advised for patients with a history of seizure disorders or those over 65 years of age, who may be at an elevated risk of Hyponatraemia.

Overdose and Emergency Response

The official regulatory documentation for Siloam (Escitalopram) outlines the specific manifestations and required emergency actions in the event of an overdose.

Symptoms most frequently documented in overdose presentations include signs of Central Nervous System (CNS) effects such as somnolence, dizziness, convulsions, and coma. Cardiovascular disturbances are also noted, often presenting as sinus tachycardia (fast heart rate), hypotension, and specific ECG changes, notably QT prolongation.

Overdose Risk & Severity Regulator-Documented Outcome
Severe Risks Serotonin Syndrome, Neuroleptic Malignant Syndrome (NMS)-like reactions, Ventricular Arrhythmia (including Torsade de Pointes), and rarely, fatal outcome.
Mandatory Action Seek immediate medical attention for any suspected overdose. Immediate medical consultation is required if life-threatening syndromes are suspected.

There is no specific antidote listed in the regulatory labeling for escitalopram. Management is defined by mandatory supportive procedures, including establishing and maintaining an airway, ensuring adequate oxygenation, and providing general symptomatic support. Cardiac and vital signs monitoring is required due to the risk of cardiovascular complications. Procedural steps such as administering activated charcoal and considering gastric lavage soon after ingestion are also officially described in the management guidelines.

Therapeutic Uses of Siloam

What Siloam Treats: Main Uses and Benefits

Siloam, known by its active ingredient escitalopram, is commonly used to help manage conditions characterized by heightened symptoms associated with a range of mood and anxiety disorders. Its core therapeutic use supports the management of symptoms that interfere with daily functioning.

The medication is relevant for the symptomatic management of Major Depressive Disorder (MDD) in adults and adolescents, and for the symptomatic management of Generalized Anxiety Disorder (GAD) in adults. It is applied across domains where additional symptomatic support is needed, helping ease the overall symptom burden of depressed or dysphoric mood, loss of interest, excessive worry, and physical anxiety manifestations. These therapeutic areas support its use in the symptomatic management for both depression and chronic anxiety, and may be part of symptomatic management in situations involving conditions like Obsessive-Compulsive Disorder (OCD) or Panic Disorder.

“It is considered relevant to provide supportive relief when symptoms interfere with routine activities, contributing to easing discomfort during periods of heightened symptoms.”


Quick Fact: Relief for Persistent Discomfort

Symptom Domain General Therapeutic Use
Pervasive Mood Distress Assists with maintaining functional stability and emotional balance during recurrent episodes.
Excessive Worry Contributes to easing the symptom of tension and related physical manifestations.
Somatic Manifestations May assist with managing symptoms that create noticeable physiological strain, such as restlessness or sleep disturbances.

Eligibility and Restrictions for Use

Official Eligibility and Contraindications

The eligibility for Siloam (Escitalopram) is strictly defined by regulatory authorities based on age, existing medical conditions, and co-administered agents. The medicine is approved for use in adults for Generalized Anxiety Disorder and in adults and adolescents (age ge 12 years) for Major Depressive Disorder.


Populations for Whom Use is Contraindicated

Use of Siloam is formally prohibited for patients who:

  • Are currently taking a Monoamine Oxidase Inhibitor (MAOI) intended to treat psychiatric disorders, or within 14 days of stopping one.
  • Are concurrently using the antipsychotic drug Pimozide.
  • Have known hypersensitivity to escitalopram, citalopram, or any components of the formulation.
  • Have known QT interval prolongation or congenital long QT syndrome (European labeling).

Restrictions and Limited Eligibility

The use of Siloam is conditional for certain groups, requiring specific caution or dosage adjustment as mandated by official labeling:

  • Pediatric Patients: Safety and effectiveness are not established for MDD in children under 12 years of age or for GAD in children under 7 years of age (U.S. labeling).
  • Older Adults (Age ge 65): A lower maximum dosage is typically recommended.
  • Hepatic Impairment: Use is permitted, but the maximum recommended dosage is limited.
  • Pregnancy and Breastfeeding: Use is restricted to circumstances where the potential benefit justifies the potential risk, as the drug is secreted into human milk.
  • Comorbidities: Caution and pre-screening are required for patients with a history of mania/hypomania, seizures, or angle-closure glaucoma.

What should I know about interactions with other medicines?

The official interaction profile for Siloam (Escitalopram) documents specific pharmacokinetic and pharmacodynamic relationships with other medicinal products and substances, as established in government regulatory labeling.

Strictly Contraindicated Combinations

Co-administration of Siloam is strictly prohibited with certain medicines due to the risk of severe pharmacodynamic interactions. This includes Monoamine Oxidase Inhibitors (MAOIs), such as those intended for psychiatric treatment, Linezolid, and Intravenous Methylene Blue. A mandatory 14-day washout period is required when switching between Siloam and psychiatric MAOIs. Co-administration with Pimozide and other drugs known to prolong the QTc interval is also contraindicated.

Exposure-Modifying Interactions

Siloam acts as a modest inhibitor of the CYP2D6 enzyme, which can increase the systemic exposure of co-administered drugs metabolized by this pathway, such as certain antiarrhythmics and metoprolol. Conversely, inhibitors of the CYP2C19 enzyme, including Cimetidine and Omeprazole, officially cause an increase in Escitalopram plasma concentration. Systemic exposure is also officially noted to be approximately 50-60% higher in elderly patients and those with reduced hepatic function.

Additive Pharmacodynamic Risk

Combinations with other serotonergic agents (e.g., Triptans, Tramadol, Lithium, St. John's Wort) increase the risk of Serotonin Syndrome. Co-administration with drugs that interfere with hemostasis, such as NSAIDs, Aspirin, or Warfarin, increases the documented risk of abnormal bleeding. Siloam absorption is not affected by food.

Mechanism of Action

Selective Serotonin Reuptake Blockade

Escitalopram's primary action begins with the molecule binding specifically to the Serotonin Transporter (SERT) in the Central Nervous System. This interaction functions as a selective inhibitor, physically blocking the reuptake of Serotonin (5-HT) from the synaptic cleft, resulting in an immediate increase in the concentration of the neurotransmitter. The mechanism is reinforced by the drug’s dual binding at an allosteric site, which stabilizes the inhibitor-transporter complex.


Time-Dependent Neuroreceptor Adaptation

The sustained increase in Serotonin initiates a neurophysiological cascade that is central to the drug's mechanism of action. Acutely, the elevated 5-HT stimulates negative feedback 5-HT1 A autoreceptors; however, with chronic exposure, these receptors desensitize and downregulate. This adaptive change removes the inhibitory feedback, contributing to sustained 5-HT outflow and the subsequent alteration of signaling dynamics in CNS circuits over several weeks.


Modulation of CNS Affective Pathways

The physiological consequence of the sustained Serotonin signaling is the long-term modulation of activity within key brain circuits, such as the Limbic System. This mechanism drives neuroplastic changes and alters activity within pathways involved in affective processing.

Dosage and Administration Information

How to Use Siloam: Official Administration Guidelines

Siloam (escitalopram) is administered exclusively by the oral route and is supplied as film-coated tablets and a liquid oral solution (1 mg/mL). The medication is prescribed for once-daily use, and the dose can be taken at any time of day, either in the morning or evening, regardless of whether it is consumed with or without food.

Standard Dosing and Adjustment

The standard protocol for use establishes a starting dose of 10 mg once daily for most adults. The maximum daily dose is 20 mg. Dose adjustments from the initial 10 mg must be governed by a specified time interval: for adults with Major Depressive Disorder (MDD) or Generalized Anxiety Disorder (GAD), any increase to 20 mg must occur after a minimum of one week of initial therapy. For adolescents (12 years and older) with MDD, the interval before any increase to 20 mg must be a minimum of three weeks.

Special Use Conditions

Official instructions specify lower maximum doses for certain populations. The recommended daily dose must not exceed 10 mg for older adults (geriatric patients) and for those with hepatic impairment. The 10 mg and 20 mg tablets are scored, allowing them to be divided for dosing flexibility. In the event that treatment is concluded, the official use protocol requires that discontinuation be achieved through a gradual dose reduction process, or tapering, whenever feasible.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Siloam

The evidence base for Siloam’s active ingredient, Escitalopram, is grounded in extensive clinical research that evaluates its use in specific mental health conditions.


Research Evidence for Major Depressive Disorder (MDD)

The research base for use in Major Depressive Disorder (MDD) is extensive, consisting of multiple placebo-controlled Randomized Controlled Trials (RCTs). These studies explored how symptoms change over time in both adults and adolescents aged 12 to 17. Researchers primarily measured outcomes related to symptom intensity using standardized scales, tracking patterns of response and remission. Trials also examined maintenance to evaluate whether the continuation of low symptom scores was sustained. Limited information is available for long-term outcomes and multi-year comparative effectiveness.


Research Evidence for Generalized Anxiety Disorder (GAD)

Research exploring short-term symptom changes in Generalized Anxiety Disorder (GAD) also relies on controlled studies, primarily in adults. These trials monitored changes over intervals, most commonly lasting 8 weeks. However, the evidence regarding GAD specifically has limitations concerning long-term treatment durations required for maintenance, and research exploring the avoidance of symptom recurrence is limited. Studies also tend to focus more on symptom intensity scales than on comprehensive functional outcomes.


Specific Clinical Studies and Uncertainty

Siloam was studied for evaluation in a specific setting: addressing depression symptoms following an Acute Coronary Syndrome (ACS) event. This research involved a large RCT that evaluated changes in depressive symptoms and included extended monitoring of cardiovascular outcomes. The findings for this specific clinical situation are largely derived from this single long-term study.

The research base includes a volume of evidence for short-term evaluation, but key limitations remain. Follow-up durations are limited for systematically confirming long-term patterns in GAD, and comparative evidence against all other treatments for multi-year outcomes is restricted. Study results reflect the specific conditions under which they were conducted and do not determine whether an individual will respond similarly.

Frequently Asked Questions (FAQ)

Common questions about Siloam (FAQ)

Q: Does Siloam cause a change in weight, based on available research evidence?

According to official regulatory documents, a change in weight is not listed among the very common, common, or uncommon adverse reactions documented in clinical trials. This information is based on the data reported in the drug's approved prescribing information.


Q: What is the official information regarding the risk of long-term side effects with Siloam?

Official documents list adverse reactions based on their frequency in short-term studies. Research evidence indicates that follow-up durations are limited for systematically confirming long-term patterns. It is noted that, in rare cases, sexual side effects may persist after a patient stops using the medicine.


Q: What happens if a person forgets to take Siloam one day?

Patient information typically states that a person may skip the dose that was forgotten. They may then return to their regular dosing schedule on the next day. Taking a double dose to make up for the missed one is generally not advised.


Q: How long does it typically take for a person to notice the intended effects of Siloam?

Clinical experience indicates that the medicine may not produce its full therapeutic effect immediately. The beneficial changes may take time, and full observation of the intended effects is usually noted after four to six weeks of consistent use.


Q: What does 'onset of action' mean for a drug like Siloam?

The 'onset of action' is a pharmacological term that refers to the time it takes for a medicine's mechanism to begin working. For Siloam, this involves the gradual and progressive adaptation of specific neuroreceptor systems in the brain, following the sustained increase of the chemical messenger, Serotonin.


Q: How long does Siloam typically stay in the body after the last use?

Pharmacological data indicates that the elimination half-life of Siloam's active ingredient is approximately 27 to 33 hours. The half-life is the time it takes for half of the dose to be cleared from the body. The substance is generally considered to be fully cleared after about five half-lives.


Q: Can people with a history of heart problems typically use Siloam?

The medicine is strictly contraindicated (prohibited) for individuals with known QT prolongation, which is an effect on the heart's electrical system. Caution is also officially advised for its use in patients with a history of other heart problems. Due to these factors, pre-screening may be necessary before treatment is started.


Q: Is Siloam classified as a habit-forming or controlled substance?

According to the U.S. Drug Enforcement Administration (DEA), the medicine is not classified as a controlled substance. This information is found in the official drug labeling documents.


Q: Does consuming alcohol affect how Siloam works, according to the official documents?

Official documents state that the use of this medicine in combination with alcohol is generally not recommended. This warning is in place because the combination may increase the risk of central nervous system side effects like dizziness or drowsiness.


Q: What is the official information regarding the use of Siloam with caffeine?

Official regulatory sources do not typically list specific interaction warnings for moderate caffeine intake. However, because Siloam influences the central nervous system, combining it with a stimulant like caffeine may increase the risk of certain effects, such as anxiety or jitteriness.


Q: What should be done if a user notices a change in the color or shape of the Siloam tablet?

Official storage instructions require the medicine to be protected from light and moisture by being kept in its original, tightly closed container. The product should not be used past the expiration date. Any physical change, such as a change in color or shape, may indicate that the medicine's integrity is compromised.


Q: Do people usually need follow-up blood tests or physical check-ups while using Siloam?

Monitoring may be necessary for specific safety concerns documented in the official labeling. For example, screening for angle-closure glaucoma may be necessary before starting treatment. Follow-up checks may also be needed to monitor the potential for Hyponatraemia (low sodium levels).


Q: Where can I find the official regulatory information about Siloam from the FDA or EMA?

Official information, such as the full U.S. Prescribing Information and Patient Information, is published by the U.S. National Institutes of Health (NIH) on its DailyMed resource. Comprehensive documents are also available from the European Medicines Agency (EMA) and other government health authorities.


Q: How do official sources describe the expected duration of treatment with Siloam?

The overall duration of treatment is not prescriptive and is determined by a prescribing healthcare provider. Official use protocols state that if the decision is made to stop the medicine, discontinuation is achieved through a gradual dose reduction process, also known as tapering.


Q: Are the side effects of Siloam reported to be the same for men and women?

Documented common side effects include sexual dysfunction, such as ejaculation disorder and anorgasmia, which are naturally gender-specific effects. However, most other common side effects (like nausea or dizziness) are not explicitly segregated by sex in the standard official regulatory labeling.


Q: What kind of monitoring is recommended when a person first starts using Siloam?

Close monitoring is generally advised for all patients starting treatment or following a dose change. Official warnings highlight the importance of watching for the emergence of suicidal thoughts and behaviors, particularly in children, adolescents, and young adults up to age 24.

How should Siloam be stored and disposed of?

Official Storage and Disposal Requirements

Regulatory documentation defines strict requirements for storing and disposing of Siloam to maintain product integrity and safety.

Storage Conditions:

Requirement Classification
Temperature Controlled Room Temperature (20 C to 25 C)
Protection Must be protected from light and moisture
Prohibition Do not freeze or store above 30 C

Siloam must be kept in its original, tightly closed, child-resistant container and secured out of the sight and reach of children. The product should not be used past the expiration date, or beyond any stated in-use period (e.g., 90 days after opening).

Disposal Instructions:

Unused or expired Siloam should be discarded according to local pharmaceutical take-back programs or authorized collection sites. Unless specifically listed by a government authority, the medication must not be flushed down a toilet or poured down a drain to prevent environmental contamination.

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

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