Product image of Mirtazapin Actavis (Mirtazapine) supplied by GNH India

Mirtazapin Actavis

Active Ingredient:
Mirtazapine
Origin:
EU

Mirtazapin Actavis (Mirtazapine)

Mirtazapine, the active ingredient in Mirtazapin Actavis, is a NaSSA (noradrenergic and specific serotonergic antidepressant) presented as a tablet for oral use. It is prescribed for the management of major depressive disorder in adult patients, helping to improve mood, sleep and appetite, and is often selected for its sedative properties that may benefit individuals with insomnia associated with depression.

GNH India supplies Mirtazapin Actavis as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide, with a focus on reliable quality, regulatory compliance and on‑time delivery to diverse markets.

Manufacturer / TM Owner

Actavis Group Ptc Ehf.

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Indications & Clinical Uses

Mirtazapine is indicated for conditions within the depressive disorder spectrum.

  • Major depressive disorder: alleviates depressive symptoms, improves mood, sleep and appetite in adult patients.

How It Works

  • Mirtazapine acts by antagonizing central presynaptic α2‑adrenergic receptors, which increases the release of norepinephrine and serotonin. It also blocks postsynaptic 5‑HT2 and 5‑HT3 receptors, enhancing serotonergic transmission while reducing associated side effects. Additionally, antagonism of H1 histamine receptors contributes to its sedative effect. Overall, the net effect is a balanced enhancement of noradrenergic and serotonergic signaling without direct serotonin reuptake inhibition.

Side Effects

Mirtazapine may cause a range of adverse reactions, varying in frequency and severity.

Common Side Effects

  • Drowsiness: sedation or sleepiness, especially early in therapy.
  • Increased appetite/weight gain: heightened hunger leading to weight increase.
  • Dry mouth: reduced salivation causing oral dryness.

Serious or Rare Side Effects

  • Agranulocytosis: severe reduction in white blood cells.
  • Seizures: rare occurrence of convulsive episodes.
  • Severe allergic reactions: rash, swelling, or anaphylaxis.

Precautions & Warnings

When prescribing mirtazapine, clinicians should consider several precautionary measures to ensure safe use.

  • Assess psychiatric history: evaluate for bipolar disorder or suicidal ideation before initiating therapy.
  • Monitor weight and metabolic parameters: track body weight, appetite changes and lipid profile regularly.
  • Caution in hepatic impairment: adjust use in patients with liver dysfunction.
  • Avoid abrupt discontinuation: taper dose to reduce risk of withdrawal symptoms.
  • Store at ambient temperature: keep below 25°C in the original packaging, protected from moisture.

Avoid Interactions

Mirtazapine can interact with other medicines, influencing its efficacy or safety.

Major Interactions (Avoid)

  • MAO inhibitors: concurrent use may cause hypertensive crisis; a washout period is required.
  • CNS depressants: combined use can enhance sedation and respiratory depression.

Moderate Interactions (Monitor Closely)

  • CYP2D6 inhibitors (e.g., fluoxetine, paroxetine): may increase mirtazapine plasma levels.
  • Anticoagulants (e.g., warfarin): possible alteration of INR, requiring monitoring.
  • Alcohol: additive central nervous system depression, advise limited consumption.

Frequently Asked Questions

Mirtazapin Actavis contains the active ingredient mirtazapine and is prescribed for the treatment of major depressive disorder in adult patients. It helps to alleviate depressive symptoms, improve sleep quality, and may increase appetite, addressing several core features of depression.

Mirtazapine works by blocking presynaptic α2‑adrenergic receptors, which leads to increased release of norepinephrine and serotonin. It also antagonizes postsynaptic 5‑HT2 and 5‑HT3 receptors and blocks H1 histamine receptors, producing a combined effect that enhances mood and provides a sedative benefit.

The appropriate dose of Mirtazapin Actavis is individualized by the prescribing clinician based on the patient’s clinical condition, response to therapy, age, liver function, and any concomitant medications. Dosage adjustments are made according to therapeutic response and tolerability.

The safety of mirtazapine in pregnancy and lactation has not been definitively established. It should only be used if the potential benefit justifies the potential risk to the fetus or infant, and the decision should be made in consultation with a healthcare professional.

To order Mirtazapin Actavis, submit an enquiry on the product page at gnhindia.com specifying the required quantity. GNH India works with hospitals, pharmacies and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details and any required import documentation.

Mirtazapine differs from many antidepressants by primarily acting as an antagonist at α2‑adrenergic, 5‑HT2, 5‑HT3 and H1 receptors, rather than inhibiting serotonin reuptake. This profile often results in strong sedative effects and weight gain, which can be advantageous for patients with insomnia or loss of appetite, but may be less suitable for those concerned about metabolic side effects.

Mirtazapin Actavis should be stored at ambient temperature, preferably below 25 °C. Keep the tablets in the original container, protect them from moisture and direct sunlight, and ensure they are out of reach of children.

Mirtazapin Actavis is administered orally, typically as a tablet taken with or without food. The exact dosing schedule and timing (e.g., evening dosing to take advantage of its sedative effect) are determined by the prescribing clinician.

Serious risks include agranulocytosis (a marked drop in white blood cells), seizures, and severe allergic reactions such as anaphylaxis. Patients should be monitored for signs of infection, unexplained fever, rash, or neurological symptoms, and seek immediate medical attention if they occur.

Mirtazapin Actavis should be avoided in individuals with known hypersensitivity to mirtazapine or any of its excipients, those currently taking monoamine oxidase inhibitors, and patients with uncontrolled severe hepatic impairment. Caution is also advised for patients with a history of bipolar disorder or suicidal ideation.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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