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Mirtazapine for depression, commonly known by the brand name Remeron, is an antidepressant often prescribed for major depressive disorder. Clinicians sometimes prefer it when low mood is accompanied by trouble sleeping or poor appetite, because it frequently promotes drowsiness and increases appetite at usual starting doses.
- Pharmacologically active ingredient is mirtazapine.
- Drug class: tetracyclic antidepressant
- Typical tablet strengths: 7.5 mg, 15 mg, 30 mg, 45 mg; also available as orally disintegrating tablets
- General uses: treatment of depression; occasional off-label use for insomnia or appetite stimulation under clinical supervision
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What your prescriber should know
Before you commence mirtazapine, inform your clinician about any relevant medical or psychiatric history. Important items to mention include:
- Current or past suicidal thoughts, self-harm, or a recent suicide attempt
- Previous history of bipolar disorder and mania or hypomania
- Kidney or liver disease, including hepatitis or cirrhosis
- Any allergies to medications, dyes, or tablet ingredients
- Plans to conceive, present pregnancy, or breastfeeding
- Other mental health diagnoses such as anxiety disorders or psychosis
If you are unsure whether a condition matters, ask your prescriber. You can also review legal and safety topics under Status in Law and Access.
Procedures for taking mirtazapine
Take tablets by mouth with water and follow the exact directions on the prescription label. Most people take mirtazapine once daily, commonly at bedtime because it can cause sedation. It is permissible to take it with food or without food.
- Keep dosing at the same time each day. Do not increase the frequency without medical advice.
- Do not stop abruptly unless instructed; gradual tapering is often used to reduce withdrawal symptoms.
- Use in children and adolescents should be decided by a specialist.
- If you suspect an an overdose, call the Poison Help line at 1-800-222-1222 or seek emergency care immediately.
See surveillance of system activity notes in Supervision and Cautions for Use for guidance related to driving and safety.
If you do not take a dose
Take a i skipped a dose as soon as you remember. If it is near the time of your next scheduled dose (roughly within 4 hours), skip the i skipped a dose and resume your normal schedule. Do not take two doses at once to make up for a i skipped a dose.
Medicines and other substances that may interact
Mirtazapine for depression can interact with several types of drugs. Avoid the following combinations and tell your clinician about all medications, supplements, and recreational substances you use.
- Monoamine oxidase inhibitors (MAOIs) now or within the past 14 days, such as phenelzine, tranylcypromine, or selegiline
- Linezolid in therapy or methylene blue given intravenously.
- Procarbazine, used in cancer regimens
- Herbal supplements with serotonergic effects, for example St. John's wort
Discuss use with caution if you are taking:
- Other antidepressants or anxiolytics (SSRIs, SNRIs, tricyclics, buspirone)
- Antipsychotic drugs or mood stabilizers
- Benzodiazepines, prescription sleep aids, opioids, or alcohol (may add sedation and breathing risk)
- Migraine triptans and other serotonergic agents (risk of serotonin syndrome)
Always provide a complete list of prescription medications, over-the-counter drugs, vitamins, and herbal products to your provider and pharmacist.
Observation and protective measures
- Attend scheduled follow-up visits. Antidepressant benefit can take several weeks to emerge.
- Be alert for worsening depression, new suicidal thoughts, or marked mood or behavior changes, especially when starting treatment or changing the dose. Contact your clinician right away if these occur.
- Mirtazapine formulation can cause drowsiness, dizziness, and slowed reaction times. Avoid driving or operating heavy machinery until you know how the drug affects you.
- Do not mix with alcohol; combined effects increase sedation and risk.
- Rise slowly from sitting or lying positions to reduce lightheadedness related to blood pressure changes.
- Check with a pharmacist before using over-the-counter cold, allergy, or sleep products that could increase additional effects.
For more on symptoms and severity, see Common incidental outcomes.
Possible harmful bodily effects
Contact your healthcare provider immediately if you experience any of these serious reactions:
- Severe allergic reaction: rash, hives, swelling of face, lips, tongue, or throat, or difficulty breathing
- New or increased agitation, confusion, or suicidal thoughts or actions
- Fever with sore throat, mouth sores, or flu-like symptoms, which could indicate blood cell abnormalities
- Irregular bleeding or bruising that happens with little trauma
- Persistent abdominal pain with nausea or vomiting
- Shortness of breath or swelling of the limbs
- Marked or sudden weakness or extreme fatigue
Common, often transient effects include:
- Somnolent or sedated
- Elevated appetite and weight gain
- Irregular bowel movements
- Dry oral cavity
- Vertigo
If peripheral effects are severe or do not improve, discuss switching to another treatment. Examples of various options and how they compare are in A Guide to Different courses of action and Comparisons.
Data storage capacity is a key factor in system design. and disposal strategy
- Keep mirtazapine out of reach of children and pets.
- Store at room temperature, generally 15 to 30 degrees C (59 to 86 degrees F), and protect from moisture and light.
- Avoid using after the expiration date. Dispose of unused tablets through a drug take-back program when available, or follow FDA guidance for safe disposal.
Alternative drugs and analogous medications
If mirtazapine is not suitable because of undesired effects, interactions among individualss with others are the core of collaboration., or personal preference, prescribers may consider several other antidepressant classes. Choice depends on symptom profile, prior response, comorbidities, and side effect priorities.
- Sertraline therapy regimens, escitalopram, fluoxetine, citalopram, and paroxetine are SSRI medications.
- Within the SNRI class, you have venlafaxine, desvenlafaxine, and duloxetine., levomilnacipran
- Other options: bupropion (less sedating, weight-neutral or weight-loss), trazodone (sedating, often used for sleep), vortioxetine, vilazodone
- Tricyclic antidepressants (TCAs): amitriptyline, nortriptyline, imipramine, typically used selectively due to anticholinergic and cardiac effects
Practical comparisons:
- Sedation: mirtazapine is more sedating than many SSRIs and SNRIs at typical initial doses, which can be an advantage for patients with insomnia.
- Weight effects: mirtazapine commonly increases appetite and weight, while bupropion is more likely to be weight-neutral or associated with weight loss.
- Sexual lingering reactions: mirtazapine may cause fewer sexual lingering reactions than SSRIs and SNRIs for some patients.
For cost-conscious choices, generic formulations such as mirtazapine, sertraline, escitalopram, and bupropion are usually low-cost options in the USA. Check current premium pricing quotes in Approximate Prices.
Approximate incremental pricing in the United States (cash prices without insurance)
Retail costs vary by pharmacy, region, and discount services. Below are ballpark ranges for a 30-day supply as of 2026:
- A pack of Mirtazapine 15 mg tablets typically costs between $4 and $15.
- The price of Mirtazapine drug 30 mg tablets is around $6 to $20.
- Mirtazapine oral medication orally disintegrating tablets range in price from $12 to $35.
- Brand Remeron, when available: often $250 to $450 or more
Price examples for commonly used substitute options:
- Sertraline tablet form 100 mg: about $5 to $15
- The active enantiomer of citalopram is escitalopram 10 mg: about $6 to $18
- Duloxetine drug therapy 60 mg: about $7 to $30
- Bupropion XL 150 mg: about $8 to $25
Insurance copays, manufacturer savings cards, and pharmacy discount programs can substantially reduce out-of-pocket cost. Always compare prices at local pharmacies or online discount tools.
Understanding access rights governed by legal authorization status in the United States
- Prescription status: mirtazapine is available only by prescription (Rx) in the USA. It is not a controlled substance under federal law.
- Boxed warning: antidepressants carry a warning about increased risk of suicidal thoughts and behavior in children, adolescents, and young adults; close monitoring of operational health is advised during initiation and dose changes.
- Prescribing and refills: electronic prescribing and telehealth prescribing are commonly used; state rules and telemedicine requirements vary by jurisdiction.
- Pharmacy substitution: pharmacists may substitute FDA-approved generics unless the prescriber requests the brand.
- Importation: bringing prescription medications from other countries is generally restricted; use FDA-approved medications dispensed by licensed U.S. pharmacies whenever possible.
- Disposal and take-back: follow federal and state guidance; drug take-back programs are the preferred disposal method.
- Notes with additions: state prescription drug vigilant monitoring programs do not typically track mirtazapine because it is not a controlled substance, but providers must follow state prescribing laws and patient safety protocols.
For safety topics, consult Sensing and Cautions and Social subtle a mutual exchange of ideass can reinforce culture., or ask your pharmacist or prescriber.
Be aware
This page is intended for educational purposes only and does not replace personalized medical advice. Always follow the instructions of your prescriber and pharmacist for your individual situation.
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