Moclobemida

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Moclobemida

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 Moclobemida

Quick Facts

Property Description
Active ingredient Moclobemide
Form Oral Solid Dosage (Tablet)
Pharmacological class Antidepressant, MAOI
Classification Reversible Inhibitor of Monoamine Oxidase A (RIMA)
Origin Synthetic

What Type of Medicine is Moclobemide?

Moclobemide is a synthetic psychotropic pharmaceutical agent classified as an antidepressant belonging to the larger group of Monoamine Oxidase Inhibitors (MAOIs). The active ingredient is Moclobemide (INN), which is structurally defined as a benzamide derivative. The drug is specifically known as a Reversible Inhibitor of Monoamine Oxidase A (RIMA), a key feature that distinguishes its mechanism from older, irreversible MAOI compounds.

Moclobemide's General Purpose and Method of Delivery

The principal function of Moclobemide is to support the management of symptoms associated with major depressive disorder and specific anxiety disorders by modulating the concentration of chemical messengers in the central nervous system. The medication is used across various types of depression, including severe and atypical forms. It is absorbed from the gastrointestinal tract following its oral administration as a tablet, ensuring systemic distribution of the active compound to achieve its therapeutic goal of helping to stabilize and elevate the patient's emotional state. Its use is typically focused on adult patients suffering from persistent low mood.

Differentiating Moclobemide: Selective and Reversible Action

The defining pharmacological feature of Moclobemide is its ability to selectively target and reversibly inhibit the Monoamine Oxidase A (MAO-A) enzyme. This mechanism means the drug primarily targets the enzyme subtype responsible for breaking down key mood-regulating neurotransmitters, such as Serotonin and Norepinephrine, and its effect is temporary rather than permanent. This temporary, targeted action underpins its unique profile within the antidepressant class, allowing it to modulate the necessary enzymatic activity without causing irreversible changes.

Regulatory References

  1. Moclobemide - Clinical Information

What side effects are possible with Moclobemida?

Possible Side Effects and Safety Information

The safety profile of Moclobemide is formally documented in government regulatory sources, classifying potential adverse reactions by frequency and physiological system. This information is descriptive of the medicine's risk profile and does not constitute medical advice or instructions.

Official Frequency Classification

Adverse reactions are grouped according to standard regulatory frequency tiers:

  • Common (affecting 1 in 100 to 1 in 10 people): Reactions often involve the Nervous and Psychiatric systems, including sleep disturbances (insomnia), dizziness, headache, anxiety, and agitation. Gastrointestinal disorders such as dry mouth and nausea are also classified as common.
  • Uncommon (affecting less than 1 in 100 people): Includes paresthesia, a decrease in blood pressure (hypotension), and skin reactions (rash, pruritus).
  • Rare (affecting less than 1 in 10,000 people): Documented effects include the elevation of liver enzymes, noted to be reversible upon discontinuation, and confusional states.

Serious Safety Considerations and Restrictions

Official labeling highlights the potential for specific serious events and restrictions. The risk of Serotonin Syndrome is explicitly documented, particularly when Moclobemide is co-administered with other serotonergic agents. Hypertensive reactions are also a documented safety concern, primarily linked to drug interactions or excessive intake of tyramine-rich substances.

The official label mandates specific constraints: Dose reduction is necessary for individuals with severe hepatic impairment. Furthermore, Moclobemide is contraindicated in patients with an acute confusional state or certain pre-existing conditions, such as uncontrolled hypertension.

Time-related safety notes indicate that effects like sleep disturbances and anxiety may be more noticeable at the start of treatment.

Overdose and Emergency Response

Moclobemide overdose is officially described based on the context of ingestion, with regulatory documents distinguishing between monotherapy and combined ingestions. A monotherapy overdose may present with documented clinical manifestations including nausea, vomiting, drowsiness, disorientation, and agitation. Additional signs such as slurred speech, reduced reflexes, convulsions, and hypertension have been observed.

The most critical risk is associated with a combined overdose, particularly when Moclobemide is co-ingested with other serotonergic agents. This scenario is explicitly documented as potentially leading to severe, life-threatening outcomes, including the documented presentation of Serotonin Syndrome and reports of death.

Immediate emergency action is mandated by regulatory authorities in the event of suspected overdose. This requires the patient to seek immediate medical attention and contact a regional poison control centre. Patients must be hospitalized for close monitoring, which should be maintained for a minimum of 24 hours. Given that no specific antidote is known, the prescribed management is based on general supportive measures and symptomatic care, which may include the administration of gastric lavage or activated charcoal.

Therapeutic Uses of Moclobemida

What Moclobemide Treats: Main Uses and Benefits

Moclobemide is generally applied across domains where additional symptomatic support is needed. The medication is considered relevant for a wide spectrum of depressive disorders and certain anxiety disorders.

The core use of Moclobemide is applied in addressing symptom clusters of persistent low mood, lack of drive, and chronic exhaustion that interfere with daily functioning. It is also relevant for easing the intense subjective anxiety and fear that typify social phobia, which are symptoms that create noticeable physiological strain. It is applied in conditions that involve episodic or fluctuating manifestations, and this use may help ease the overall symptom burden and supports general well-being.

“Moclobemide is relevant for easing symptoms that interfere with daily comfort, offering symptomatic relief to help patients cope more steadily with difficult episodes.”

Quick Fact: Symptomatic Support for Key Manifestations
Symptoms supported: Persistent low mood, chronic exhaustion, and excessive subjective social anxiety.
Primary Benefit: Provides support that helps ease the overall symptom burden, contributing to improved comfort during symptomatic periods.
Relevant Context: Applied in clinical settings that involve acute or unstable symptom patterns.

Eligibility and Restrictions for Use

Eligibility Map: Who Can and Cannot Use Moclobemida

Eligibility Status Defined Population Regulatory Rule
Allowed Adults (18+), Elderly Use permitted; no special dose adjustment is required for the elderly.
Not Recommended Children/Adolescents Not recommended below 18 years due to lack of established safety and efficacy data.
Contraindicated Specific Conditions Absolute non-eligibility for patients with Acute Confusional States, Phaeochromocytoma, or known Hypersensitivity.
Restricted Use Hepatic Impairment Patients with severe hepatic impairment must have the daily dose reduced to one-half or one-third.
Prohibited Co-Use Concomitant Medication Contraindicated with agents like Selegiline, Linezolid, SSRIs, Tricyclic Antidepressants, Triptans, Pethidine, or Tramadol.
Reproductive Status Pregnancy/Lactation Not recommended during pregnancy (safety not established) or while breastfeeding.

Connection to the Overall Eligibility Profile

Official regulatory documents define Moclobemide eligibility primarily through a set of absolute exclusions and specific conditional permissions. The profile mandates contraindications based on critical disease states and pharmacological interactions to ensure patient safety. Use is restricted by age to the adult population and requires mandatory dose modification in the presence of severe liver impairment, strictly adhering to established regulatory parameters.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory documents define specific, high-level interaction patterns for Moclobemide, classified as a Reversible Inhibitor of Monoamine Oxidase A (RIMA).

Contraindicated and High-Risk Combinations

The co-administration of Moclobemide is strictly contraindicated with medicines that significantly increase central nervous system serotonin levels, including SSRIs, SNRIs, certain Tricyclic Antidepressants (TCAs), Tramadol, and Pethidine. This restriction addresses the documented risk of severe pharmacodynamic interaction (Serotonin Syndrome). Combinations with indirect-acting sympathomimetic agents are also restricted due to the risk of a Hypertensive Reaction.

Interaction Type Interacting Substances/Conditions
Pharmacokinetic Cimetidine and Omeprazole (documented to increase Moclobemide plasma concentrations via CYP inhibition).
Pharmacodynamic St. John’s wort (serotonergic risk) and Excessive Alcohol (risk of enhanced CNS depression).

Administration Timing and Clearance

Official labeling requires a mandatory 24 to 48 hour washout period when switching from Moclobemide to another serotonergic antidepressant. Conversely, when switching from a long half-life serotonergic agent, a minimum of five half-lives of the previous drug must elapse. Furthermore, Severe Hepatic Impairment is noted as a population-specific condition that increases Moclobemide exposure due to reduced clearance.

Mechanism of Action

Moclobemida functions as a reversible inhibitor of the enzyme Monoamine Oxidase-A (MAO-A), with high selectivity for this isoform. This biological target is a mitochondrial enzyme located in central nervous system neurons, where it is responsible for the oxidative deamination and catabolism of endogenous monoamine neurotransmitters, specifically norepinephrine and serotonin, and, to a lesser extent, dopamine. The molecular interaction is characterized as a slow-binding, competitive inhibition with reversible binding to the MAO-A active site. This inhibition impedes the intracellular degradation of the monoamines within the presynaptic terminal. The consequent increase in free cytosolic neurotransmitter concentrations promotes enhanced loading into synaptic vesicles. This upstream molecular action results in a higher net release of norepinephrine, serotonin, and dopamine into the synaptic cleft upon neuronal firing. The system-level physiological consequence of this elevated extracellular monoamine concentration is a modulation of monoaminergic neurotransmission across various brain regions.

Dosage and Administration Information

Moclobemide is for oral administration only, available as film-coated tablets in standard strengths such as 150 mg and 300 mg. The administration protocol encompasses the dosing, frequency, and adjustments used in clinical practice.

General Administration Guidelines

Usage Parameter General Parameters
Route & Timing Taken orally with fluid, specifically after a meal.
Standard Dosing Initial adult dose is 300 mg daily administered in divided doses. The maximum daily dose is typically 600 mg.
Dose Adjustment Rule The initial 300 mg dose is not increased during the first week of therapy due to changes in bioavailability.

The required dosing frequency involves taking the total daily amount in two or three divided administrations throughout the day. Treatment continuation is typically required for at least four to six weeks to assess efficacy, followed by a maintenance period. After this maintenance, the medication is generally subject to gradual tapering off as part of the discontinuation procedure.

Population-Specific Use

No special dose adjustment is required for older adults or in patients with reduced renal function. However, an explicit modification is required for those with severe hepatic impairment: the total daily dose is reduced to one half or one third of the standard amount. Use is generally not recommended for individuals under the age of 18 due to insufficient clinical data.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Moclobemida

Evidence for Use in Major Depressive Disorder (MDD)

The body of evidence for Moclobemida's use in depressive disorders includes numerous studies, primarily derived from meta-analyses that pooled data from multiple studies and individual Randomized Controlled Trials (RCTs). These trials were typically conducted during the acute management phase, usually lasting between 4 and 16 weeks, and often included the populations studied, such as adult outpatients. Researchers explored how symptoms changed over time using standard measurement tools like the Hamilton Depression Rating Scale (HDRS) and the Montgomery–Åsberg Depression Rating Scale (MADRS). These scales measured outcomes related to symptom intensity and overall functional imbalance.

Studies monitored how symptoms evolved in the observed populations, and findings describe patterns observed when Moclobemida was compared to an inactive substance (placebo) and to other types of established antidepressants. Studies monitored measurements of acute response rates and remission status. Evidence derived from these settings reports data show patterns related to how symptoms evolved when compared to older classes of antidepressants in acute studies.

Evidence for Use in Social Anxiety Disorder (Social Phobia)

Moclobemida was also studied for its use in managing symptoms of social anxiety disorder (social phobia). The evidence for this condition includes placebo-controlled RCTs and trials comparing it to other treatments. Research examined outcomes related to daily functioning and episodic changes in anxiety, specifically monitoring measurements on anxiety-specific scales like the Liebowitz Social Anxiety Scale (LSAS) and the CGI Scale. Studies focusing on episodes where symptoms become more noticeable were primarily conducted in adult patients.

Some placebo-controlled trials reported how symptoms evolved in the observed populations over the short-term treatment period, and findings help contextualize how patients reported their experience. However, findings were mixed across different randomized trials, meaning that results were not always consistent. Comparative evidence is lacking against newer selective pharmacological agents in fully controlled settings.

What is Still Uncertain in the Research Landscape

The evidence landscape includes several areas where research is ongoing or where data remain insufficient:

  • Controlled Long-Term Data: There is limited controlled evidence providing insight into long-term outcomes; long-term outcomes are not fully established and durability of symptom changes beyond the initial six months remains uncertain.
  • Placebo-Controlled Gaps: For panic disorder, the lack of placebo-controlled trials means the independent effect of the medication has not been fully described by research independent of active comparators.
  • Subgroup Findings: Data for certain medically complex or vulnerable groups remain insufficient, and the results apply only to the populations studied in the available research.

Key Studies & References

  1. A metaanalysis of clinical trials comparing moclobemide with selective serotonin reuptake inhibitors for the treatment of major depressive disorder

Frequently Asked Questions (FAQ)

Common questions about Moclobemida (FAQ)

Q: Is it normal to feel a bit restless or agitated when starting Moclobemida?

A: Agitation, nervousness, or sleep disturbances are known side effects that may be more noticeable when starting treatment with Moclobemida. Official regulatory information indicates that such symptoms should be discussed with a healthcare provider, who can determine if any management steps are necessary.

Q: Is a persistent headache a known side effect of Moclobemida?

A: Yes, headache is listed as a common side effect in the official product information. A sudden, severe throbbing headache is a symptom that has been reported and should prompt immediate consultation with a healthcare provider, as it can be a sign of a hypertensive reaction (a significant rise in blood pressure).

Q: Is blurred vision or changes in eyesight a reported side effect of Moclobemida?

A: Official labeling lists blurred vision and other changes in vision as reported side effects. It is noted that Moclobemida may have the potential to worsen symptoms of pre-existing glaucoma, a condition characterized by increased pressure in the eyes.

Q: Does Moclobemida have any known effects on appetite?

A: Yes, regulatory documents indicate that changes in appetite or a loss of appetite are listed among the reported side effects of the medication.

Q: Is it common to experience dizziness or lightheadedness when standing up while on Moclobemida?

A: Dizziness is a common side effect of Moclobemida. Feeling lightheaded when changing positions, such as standing up quickly, can be related to the uncommon side effect of low blood pressure (hypotension). Due to the risk of hypotension, a healthcare provider might advise rising slowly from a sitting or lying position.

Q: Can Moclobemida be taken with common migraine medications, like triptans?

A: No, co-administration of Moclobemida with triptans (a class of migraine medications) is strictly contraindicated, meaning it is prohibited. This restriction is in place because the combination is associated with an elevated risk of a potentially serious condition called Serotonin Syndrome.

Q: Does Moclobemida have any potential impact on heart rate or rhythm?

A: The official product information reports side effects that may affect the heart, including a slow heart rate and palpitations (fast, racing, or irregular heartbeat). Any changes in heart rate, especially those that feel extreme, are symptoms that should be promptly discussed with a healthcare provider.

Q: Are there dietary restrictions for Moclobemida beyond aged cheese (e.g., fermented soy products)?

A: Yes, the product label generally advises against the consumption of large amounts of food that are rich in tyramine. While aged cheese is a well-known example, other examples specifically listed in regulatory documents include yeast extracts and fermented soya bean products.

Q: Can Moclobemida worsen anxiety or cause panic attacks in some users?

A: Anxiety is listed as a common side effect of the medication. Official information indicates that any worsening of emotional symptoms, including anxiety or new emotional problems, is a change that should be reported to a healthcare professional.

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

A: Symptoms reported in the product information include swelling of the face, lips, tongue, or throat, and difficulty breathing, which are signs that need prompt medical review. Other hypersensitivity reactions like skin rash and swelling (oedema) may also occur.

Q: If I miss a dose of Moclobemida, what is the general recommendation?

A: The general recommendation in patient information is to skip the missed dose and resume the schedule with the next dose at the usual time. It is generally advised not to double the dose to compensate for the missed one.

Q: Is Moclobemida known to cause drowsiness or affect alertness for driving?

A: Drowsiness and dizziness are potential side effects. Because of this, official labeling advises against driving or operating complex machinery until a person is certain that the medication does not impair their mental or motor performance.

Q: Can Moclobemida be used by people with a history of kidney problems?

A: For patients with reduced kidney function, regulatory guidelines state that no special dose adjustment is required. However, the official product information indicates that the medication should be used with caution in patients who have a history of impaired kidney function.

How should Moclobemida be stored and disposed of?

How to Store and Dispose of Moclobemida?

This section explains the official regulatory requirements for storing and disposing of Moclobemide tablets.

Item Official Regulatory Statement
Storage Temperature Requirements: No special storage conditions are required; stable at room temperature (15 C to 30 C).
Handling Requirements: No special requirements for handling are necessary.
Shelf Life/Stability: The product has an official shelf life of 3 years when stored under the specified conditions.
Disposal Instructions: Disposal of unused or expired product must be done in accordance with local requirements.
Environmental Warning: Official documentation notes that the medicine may pose a risk to the environment.

The regulatory profile defines Moclobemide tablets as stable under common ambient conditions, requiring no special protection from light or moisture beyond the original packaging. Its stability is assured for a 3-year period. Official instructions emphasize that the discard process must adhere strictly to local pharmaceutical waste regulations due to the explicit environmental risk classification.

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

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