Remirta

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Remirta

Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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 Remirta

Property Description
Active ingredient Mirtazapine
Form Oral tablets, Orally disintegrating tablets
Pharmacological class Tetracyclic Antidepressant / NaSSA
Common purpose Mood stabilization and elevation
Origin Synthetic

Remirta is a synthetic, prescription-only medication whose active ingredient is Mirtazapine, a compound belonging to the piperazino-azepine group of chemicals. It is supplied as a single-ingredient product, which classifies it fundamentally as an antidepressant. Mirtazapine is classified as an agent used in the management of mood disorders. This supports the medication's primary role in addressing conditions related to neurochemical imbalances affecting emotional state, a use that is clinically recognized across major international health authorities.

Mirtazapine is specifically categorized as a Noradrenergic and Specific Serotonergic Antidepressant (NaSSA), which describes its unique dual mode of action on brain chemistry. This classification indicates that the drug enhances the release and availability of two critical chemical messengers: noradrenaline and serotonin. Its action targets specific receptors, distinguishing the NaSSA group from other widely used antidepressants. The dual action of Mirtazapine is a key differentiating factor in its pharmacological profile compared to single-action agents.

The general therapeutic purpose of Mirtazapine is to help stabilize and elevate mood, working toward the restoration of neurochemical equilibrium necessary for healthy emotional function. Remirta is formulated for oral administration and is typically presented as conventional oral tablets or as orally disintegrating tablets. These solid forms provide flexibility in patient administration, with the orally disintegrating version being a distinct pharmaceutical feature designed for ease of use. This medication is typically used by adults experiencing issues with mood regulation.

Regulatory References

  1. European Medicines Agency (EMA)

What side effects are possible with Remirta?

The official safety documentation for Mirtazapine (Remirta) details potential adverse effects classified by both frequency and the body system affected, strictly following regulatory standards.

Adverse Reaction Frequency (Regulatory Classification)

Adverse reactions are classified based on their likelihood of occurrence, as documented in official prescribing information:

Classification Examples of Documented Effects
Very Common (ge 1/10) Somnolence, Increased Appetite, Dry Mouth
Common (ge 1/100 to < 1/10) Weight Gain, Dizziness, Fatigue, Constipation, Orthostatic Hypotension
Rare (ge 1/10,000 to < 1/1,000) Agranulocytosis, Convulsions/Seizures, Acute Hepatitis

Serious Adverse Reactions and Safety Constraints

Official labels identify clinically significant adverse events. A mandatory warning exists concerning the potential for Suicidal Thoughts and Behaviors, particularly in adolescents and young adults during the initial treatment phases or following dose adjustments. Other serious, though rare, reactions documented include Agranulocytosis (severe white blood cell suppression) and Serotonin Syndrome.

The safety profile also notes time-related patterns, such as sedative effects being more prominent at the initiation of treatment, typically diminishing over the first few weeks. Abrupt termination of the medicine after long-term administration may result in a discontinuation syndrome.

Safety constraints include warnings regarding co-administration with Monoamine Oxidase Inhibitors (MAOIs) due to the risk of severe reactions. Specific safety considerations are noted for special populations; for example, the clearance of the drug is generally slower in the elderly and in patients with hepatic or renal impairment.

Overdose and Emergency Response

Overdose Map: Overdose and when to seek help — official regulatory information for Remirta

Overdose scope

Domain Regulatory Statement
Documented overdose presentations Overdose is associated with signs and symptoms such as disorientation, drowsiness, impaired memory, and tachycardia (rapid heart rate).
Physiological systems affected (as stated in label) The Central Nervous System (CNS) and Cardiovascular System are affected. Serious effects including QT prolongation and Torsades de Pointes have been reported.
Dose-related or exposure-related factors (if applicable) The risk of serious outcomes, including fatalities, increases with dosages higher than recommended, particularly in mixed overdoses with other pharmacological agents.
Population-specific overdose notes (if applicable) Clearance is reduced in patients with renal or hepatic impairment, potentially leading to increased drug levels and heightened risk.
Emergency-response statements (as written in official documents) Immediate medical attention is required. Management involves symptomatic and supportive treatment. For suspected Serotonin Syndrome, the medication must be discontinued.

Overdose classifications (high-level)

Classification Regulatory Statement
Severity classification (as defined in official documents) Overdose may result in serious outcomes, including fatalities, especially in multi-drug ingestions.
Regulatory basis FDA Prescribing Information and European Summary of Product Characteristics (SmPC).
Overdose-context constraints (as defined in official documents) No specific antidote is known; procedural steps like considering gastric lavage or activated charcoal are defined management options.

Resulting overdose structure

Official overdose statements:

  • No specific antidote is known for Mirtazapine overdose.
  • ECG monitoring should be undertaken as part of supportive care due to documented cardiac risks.
  • The explicit potential for fatalities and cardiac arrhythmias confirms the need to seek urgent medical help immediately.

Connection to the overall overdose profile (2–4 sentences): Regulatory documents define the overdose profile by its core CNS depressant effects and the potential for severe, life-threatening cardiovascular toxicity. The documentation of serious outcomes like Torsades de Pointes and the absence of a known antidote necessitate immediate emergency medical intervention. All management is centered on providing rigorous symptomatic and supportive therapy and continuous monitoring of vital functions.

Therapeutic Uses of Remirta

Remirta is commonly used to help with managing Major Depressive Disorder (MDD), addressing affective symptoms such as persistent sadness, hopelessness, and loss of pleasure. It is applied in clinical settings that involve acute or unstable symptom patterns and is considered relevant for easing symptoms that create noticeable functional strain.

Therapeutic Domains and Symptom Relief

The medication is relevant for managing symptoms across domains where additional symptomatic support is needed, including mood disturbance, sleep deficits, and appetite loss. This provides support that helps ease the overall symptom burden of the acute illness.

It assists in addressing symptom clusters that may become intense or disruptive, and may assist with managing symptoms related to increased neurological or muscular activity, such as insomnia and concurrent anxiety. It is also commonly used across conditions presenting with acute episodes where patients experience symptoms that become more disruptive during flare-ups, such as poor appetite and low body weight.

This application is relevant for easing symptoms linked to organ-specific functional stress, which contributes to improved comfort during periods of heightened symptoms and supports general well-being.

Note on Symptomatic Relief
Symptom Management Focus Supports the management of symptoms related to physical discomfort and increased neurological activity.
Clinical Context Relevant in situations involving recurrent or episodic manifestations of depression.
Patient Benefit Helps improve day-to-day comfort and assists with maintaining functional stability.

Regulatory References

  1. NIH DailyMed Mirtazapine Labeling

Eligibility and Restrictions for Use

Remirta (Mirtazapine) is officially indicated for use in adults (18 years and older). Regulatory authorities define specific groups who are absolutely prohibited from using this medicine. It is contraindicated in patients with a known hypersensitivity to mirtazapine or any of its components. Furthermore, Remirta must not be used concomitantly with, or within 14 days of discontinuing, a Monoamine Oxidase Inhibitor (MAOI).

Population Restrictions

Use of Remirta is not recommended for children and adolescents under 18 years because its safety and effectiveness have not been established in this age group. The orally disintegrating tablet formulation is also contraindicated for patients with Phenylketonuria (PKU).

Specific populations must use Remirta only with caution due to altered drug clearance. This includes patients with moderate to severe renal impairment and those with hepatic impairment. Use during pregnancy is generally not recommended unless necessary, and use while breastfeeding is also not recommended, as the drug passes into breast milk. Physicians must also exercise caution when considering Remirta for patients with a history of seizures or certain cardiovascular conditions.

What should I know about interactions with other medicines?

The use of Remirta with certain other medicines, herbal products, and alcohol is documented in official regulatory sources due to the potential for interaction-related risks or changes in drug concentration.

Contraindicated Combinations

Remirta must not be used concomitantly with Monoamine Oxidase Inhibitors (MAOIs), including the antibiotic linezolid and intravenous methylene blue. A period of at least 14 days must pass between discontinuing an MAOI and starting Remirta, or vice versa, to avoid the risk of a serious condition related to high serotonin levels.

Other Serotonergic and CNS Depressants

The concurrent use of Remirta with other medicines that affect serotonin levels—such as triptans, lithium, tramadol, and other antidepressants—increases the risk of high serotonergic activity. Co-administration with Central Nervous System (CNS) depressants, like benzodiazepines (e.g., diazepam) and alcohol, carries a documented risk of additive effects, including increased sedation and impairment.

Pharmacokinetic Interactions

Remirta concentrations in the body may be affected by drugs that modify the CYP3A enzyme system, which is involved in Remirta's metabolism. Strong CYP3A inducers (e.g., carbamazepine, phenytoin, rifampin) can significantly decrease Remirta’s concentration, which may require adjustment by a healthcare provider. Conversely, strong CYP3A inhibitors (e.g., ketoconazole, clarithromycin) and cimetidine can increase Remirta’s concentration. Additionally, the co-administration with the anticoagulant warfarin requires monitoring of blood clotting measures.

Non-Medicinal Product Interactions

Use with the herbal product St. John’s Wort is cautioned against, as it is documented to increase the risk of serotonergic effects.

Mechanism of Action

The mechanism of action for Remirta (Mirtazapine) is defined by its activity as a Noradrenergic and Specific Serotonergic Antidepressant (NaSSA). This profile is characterized by the simultaneous blockade of multiple key receptors, leading to targeted neurochemical and physiological modulation.

Dual Enhancement via Presynaptic Disinhibition

This domain covers the action on presynaptic alpha2-adrenergic receptors, which normally act as an inhibitory brake on neurotransmitter release. By blocking these receptors (disinhibition), the drug increases the synaptic output of both noradrenaline (NE) and serotonin (5-HT). This mechanism is key to the drug's effect profile, as it immediately increases the synaptic concentration of these chemical messengers.

Selective Targeting of Serotonin Signaling

This domain involves the antagonism of specific postsynaptic 5- HT2 and 5- HT3 receptors. This blockade leads to the released 5-HT binding preferentially to the 5- HT1A receptors. This targeted signaling approach modulates specific neurochemical signaling pathways in the brain.

Histamine-Mediated Arousal Modulation

Remirta also acts as an antagonist with a high binding affinity for the central Histamine H1 receptors. This high-affinity binding dampens the activity of the histaminergic system in the brain, a major pathway regulating alertness and wakefulness. This action leads to modulation of the central histaminergic system, affecting arousal regulation.

Dosage and Administration Information

How to Use Remirta

The usage of Remirta (Mirtazapine) is characterized by specific parameters regarding administration route, dosing, and schedule. The medication is formulated for oral administration and is available as film-coated tablets and orally disintegrating tablets (ODT) in strengths including 15 mg, 30 mg, and 45 mg.


Standard Administration Protocol

The typical starting dose for adults is 15 mg or 30 mg taken once daily, with the effective maintenance range generally being 15 mg to 45 mg per day, which is also the maximum recommended dose. The drug’s half-life supports a once-daily schedule, preferably taken in the evening prior to sleep; however, it may be administered in two divided doses. Dose adjustments, if needed, should be separated by intervals of one to two weeks to allow for the proper assessment of the response.


Key Procedural Requirements

Administration is possible with or without food. Film-coated tablets should be swallowed whole with fluid, while ODTs must be placed on the tongue with dry hands, allowed to dissolve in saliva, and then swallowed. The ODT form should be used immediately after removal from the blister pack.

Treatment is typically continued for at least six months after symptom resolution. When discontinuation is planned, the dosage must be gradually reduced (tapering) rather than stopped abruptly. Dose modification (reduction) may also be necessary in patients with moderate to severe renal or hepatic impairment.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Remirta

Evidence for Use in Acute Major Depressive Disorder (MDD)

The primary research exploring Remirta for the acute phase of Major Depressive Disorder (MDD) involves short-term, placebo-controlled Randomized Controlled Trials (RCTs). Researchers examined adult patients and focused on outcomes related to systemic or functional imbalance. Research has examined the differences in measured symptom score changes between participants receiving the study compound and those receiving an inactive comparator. Comparative studies also explored the difference in measured outcomes when the compound was compared against other established antidepressant treatments. The available data show patterns related to symptom change measurements, contributing to the broader evidence landscape for this compound.

Evidence for Maintaining Remission and Relapse Prevention

Research has explored the longer-term course of MDD in patients who achieved remission during the initial treatment phase. These studies include placebo-controlled discontinuation trials. The findings describe patterns observed in these studies, where continued use of the study compound was associated with monitoring the sustained state of remission over the observation period. Studies report how symptoms evolved in the observed populations, noting that a depressive relapse was monitored in participants who discontinued the active compound.

The Current Landscape: What Remains Unclear in the Research

The research provides insight into short-term changes and helps show what has been observed so far, but significant limitations and evidence gaps are noted in the scientific literature. Long-term outcomes are not fully established, and data for outcomes extending past one year are limited. The available long-term studies focus primarily on relapse prevention in those who achieved remission initially, meaning they do not address the long-term outcomes in all patients. Comparative evidence is lacking in many areas, limiting understanding of how the compound compares to all available treatment options over extended periods.

Key Studies & References

  1. Efficacy of mirtazapine for prevention of depressive relapse: a placebo-controlled double-blind trial of recently remitted high-risk patients
  2. The effects of mirtazapine on sleep in patients with major depressive disorder

Frequently Asked Questions (FAQ)

Common questions about Remirta (FAQ)

Q: What were the main findings of the pivotal clinical trials for Remirta?

Studies and official information indicate that pivotal clinical trials for Remirta showed that the compound was statistically superior to placebo. Researchers measured symptom score changes in adults with Major Depressive Disorder (MDD). The findings contributed to the evidence supporting the use of Remirta for the symptoms of MDD.


Q: What does the official guidance say about taking Remirta with herbal supplements?

Regulatory documents specifically caution against combining Remirta with the herbal product St. John’s Wort. This warning is due to a documented risk of increased serotonergic activity, which could potentially lead to serious adverse effects.


Q: Can Remirta be used by older adults, according to official guidelines?

According to the official product information, Remirta can be used by older adults. However, pharmacokinetic studies indicate that the drug's clearance, or how quickly it leaves the body, is generally slower in the elderly. This difference may necessitate adjustments to the prescribed dosage.


Q: Do official documents mention any mandatory lab tests or monitoring while taking Remirta?

Regulatory information notes that a Complete Blood Count (CBC) may be monitored, particularly if signs of infection occur. This is done to help assess the rare risk of agranulocytosis (severe white blood cell suppression) cited in official labels.


Q: What is the general expectation for duration of use before a review of the treatment is suggested?

The full therapeutic effect of Remirta may not be fully evident immediately and can take several weeks or longer. Treatment response is often evaluated within about 8 weeks of starting therapy. This timeframe allows the drug's effect to be properly assessed as part of the overall treatment plan.


Q: Are there specific organ systems that Remirta is known to affect, requiring monitoring?

Regulatory documents note that Remirta can affect several organ systems. Risks cited include potential issues with the hematologic system (blood) and the hepatic system (liver). Additionally, special caution is required for patients with pre-existing renal impairment (kidney function).


Q: Are there any physical or mental performance limitations mentioned in the prescribing information for Remirta?

The official prescribing information states that the drug may impair judgment, thinking, and motor skills due to its effects like somnolence (drowsiness) and dizziness. Regulatory documents state that caution should be exercised when engaging in skilled tasks such as driving or operating heavy machinery.


Q: Is Remirta typically used as a primary or secondary treatment option?

The context of regulatory guidelines suggests Remirta is an effective treatment option for Major Depressive Disorder. While some clinical guidelines suggest other classes of medicines as first-line, Remirta is often recognized as an alternative or secondary option. It is sometimes favored for patients who may benefit from its unique pharmacological profile, such as those with concurrent insomnia.


Q: How does Remirta interact with common over-the-counter pain relievers?

Interactions vary depending on the specific pain reliever. Serotonergic pain medicines, such as certain drugs for migraine or strong analgesics, increase the risk of Serotonin Syndrome. Regulatory documents cite a documented risk of increased gastrointestinal bleeding when the drug is taken with non-steroidal anti-inflammatory drugs (NSAIDs).


Q: How long does it typically take for Remirta to begin having its described effects?

Official product information states that the initial therapeutic effects of Remirta may be observed as early as 1 week after beginning therapy. However, like many medications in its class, the full benefit usually takes several weeks to become established.


Q: What is the guidance for what happens if you miss a dose of Remirta?

Official guidance for once-daily use describes a protocol where a missed dose should be taken if remembered soon, but must be skipped if it is close to the next scheduled dose. This guidance specifies that an individual should not take a double dose to compensate for a missed dose.


Q: Are there ongoing research studies exploring new potential uses for Remirta?

Regulatory resources and public clinical trial registries reference ongoing clinical research involving Remirta. These studies include trials exploring new applications, investigating different formulations, or examining its comparative effectiveness against other treatments.


Q: When did Remirta first receive approval from a major regulatory agency (like the FDA or EMA)?

The active ingredient in Remirta, Mirtazapine, first received regulatory approval for treating Major Depressive Disorder in the Netherlands in 1994. It was subsequently approved by the U.S. Food and Drug Administration (FDA) in 1996.


Q: Does the research indicate a difference in effectiveness based on patient age?

Efficacy studies established the drug's effectiveness primarily in adult patients. While no specific difference in effectiveness by age within the adult population is commonly highlighted, pharmacokinetic data shows the drug's clearance is slower in the elderly. This difference may necessitate adjustments to the prescribed dosage in the older adult population.


Q: Why is Remirta sometimes referred to as a 'novel' or 'new generation' medicine?

Official regulatory summaries describe Remirta's unique action as a Noradrenergic and Specific Serotonergic Antidepressant (NaSSA). This classification reflects its dual mechanism of enhancing both noradrenergic and serotonergic activity, giving it a distinct profile compared to earlier classes of antidepressants.


Q: What is the bioavailability of Remirta (how well is it absorbed)?

According to official pharmacokinetic data, the drug is rapidly and completely absorbed following oral administration. However, due to first-pass metabolism in the liver, its absolute bioavailability (the amount that reaches the bloodstream) is reported to be about 50%.


Q: Can Remirta be taken with common cold and flu medications?

Regulatory documents advise caution due to the risk of additive effects when Remirta is used with other Central Nervous System (CNS) depressants. Many common cold and flu medications contain ingredients that fall into this class, which may lead to significantly increased sedation, drowsiness, or cognitive impairment.

How should Remirta be stored and disposed of?

The medicine Remirta (mirtazapine) must be stored and disposed of according to the official requirements detailed in the regulatory labeling.

Storage Requirements

Remirta tablets require storage at controlled room temperature, specifically between 20 C and 25 C (68 F to 77 F). The product must be kept in the container it was dispensed in, and the container must be kept tightly closed for protection. All forms of Remirta must be stored out of the sight and reach of children.

Handling and Stability

For the orally disintegrating tablet form, use is required immediately upon removal from the blister packaging; this form cannot be stored after the original seal is broken.

Disposal Instructions

Unused or expired Remirta should ideally be taken to an official drug take-back program. If this option is not available, the medication must be secured for household trash disposal by mixing the tablets with an undesirable material, such as used coffee grounds or dirt, and then placing the mixture in a sealed bag.

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

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