Remeron 45mg Soltabs

Manufacturer ORGANON Active Ingredient Mirtazapine Orally Disintegrating Tablets(mir TAZ a peen) Pronunciation mir-TAZ-uh-peen
WARNING: Drugs like this one have raised the chance of suicidal thoughts or actions in children and young adults. The risk may be greater in people who have had these thoughts or actions in the past. All people who take this drug need to be watched closely. Call the doctor right away if signs like depression, nervousness, restlessness, grouchiness, panic attacks, or changes in mood or actions are new or worse. Call the doctor right away if any thoughts or actions of suicide occur.This drug is not approved for use in children. Talk with the doctor. @ COMMON USES: It is used to treat depression.It may be given to you for other reasons. Talk with the doctor.
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Drug Class
Antidepressant
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Pharmacologic Class
Noradrenergic and specific serotonergic antidepressant (NaSSA)
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Pregnancy Category
Category C
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FDA Approved
Sep 1996
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DEA Schedule
Not Controlled

Overview

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What is this medicine?

Mirtazapine is a medication used to treat depression. It works by helping to restore the balance of certain natural substances (neurotransmitters) in the brain. It can also help improve sleep and appetite, which are often affected by depression. This specific form, SolTab, dissolves quickly on your tongue.
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How to Use This Medicine

Taking Your Medication

To use this medication correctly, follow your doctor's instructions and read all the information provided. Take your medication as directed, and follow these guidelines:

If this medication makes you sleepy, take it at bedtime.
You can take it with or without food.
When opening the foil packaging, do not push the tablet out. Instead, use dry hands to remove it from the foil.
Place the tablet on your tongue and let it dissolve. You do not need water, and do not swallow the tablet whole. Also, do not chew, break, or crush it.

Handling and Storage

Do not remove the medication from the blister pack until you are ready to take it.
Take the medication immediately after opening the blister pack. Do not store the removed medication for future use.
Continue taking your medication as directed by your doctor or healthcare provider, even if you feel well.

Storing and Disposing of Your Medication

Store your medication at room temperature, protected from light and moisture. Do not store it in a bathroom.
Keep all medications in a safe place, out of the reach of children and pets.
Dispose of unused or expired medications properly. Do not flush them down the toilet or pour them down the drain unless instructed to do so. If you have questions, consult your pharmacist. You may also have access to drug take-back programs in your area.

Missing a Dose

If you miss a dose, take it as soon as you remember.
If it is close to the time for your next dose, skip the missed dose and return to your regular schedule.
* Do not take two doses at the same time or take extra doses.
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Lifestyle & Tips

  • Take the medication exactly as prescribed, usually once daily at bedtime due to its sedating effects.
  • Do not crush, chew, or split the SolTab; allow it to dissolve on your tongue and then swallow with saliva.
  • Avoid alcohol and other CNS depressants (e.g., sedatives, tranquilizers) as they can increase drowsiness and dizziness.
  • Be aware of potential weight gain and increased appetite; discuss healthy eating habits with your doctor.
  • Do not stop taking this medication suddenly without consulting your doctor, as withdrawal symptoms can occur.
  • Report any new or worsening symptoms of depression, suicidal thoughts, or unusual changes in behavior immediately to your doctor.

Dosing & Administration

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Adult Dosing

Standard Dose: 15 mg once daily at bedtime, titrate up to 45 mg/day
Dose Range: 15 - 45 mg

Condition-Specific Dosing:

Major Depressive Disorder: Initial 15 mg once daily at bedtime. Increase dose every 1-2 weeks based on clinical response and tolerability, up to a maximum of 45 mg/day.
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Pediatric Dosing

Neonatal: Not established
Infant: Not established
Child: Not established
Adolescent: Not FDA approved for pediatric use; however, if used off-label, typically 7.5-15 mg once daily, titrate cautiously. Black Box Warning regarding suicidality applies.
Note: Mirtazapine is not FDA approved for use in pediatric patients. Studies in pediatric patients with MDD did not show superiority to placebo.
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Dose Adjustments

Renal Impairment:

Mild: No specific adjustment recommended, but monitor for adverse effects.
Moderate: Consider a 30% reduction in total daily dose (e.g., 30 mg/day max).
Severe: Consider a 50% reduction in total daily dose (e.g., 22.5 mg/day max).
Dialysis: Not significantly removed by dialysis. Dose adjustment as per severe renal impairment. Monitor closely.

Hepatic Impairment:

Mild: No specific adjustment recommended, but monitor for adverse effects.
Moderate: Consider a 30% reduction in total daily dose (e.g., 30 mg/day max).
Severe: Consider a 50% reduction in total daily dose (e.g., 22.5 mg/day max).
Note: Mirtazapine clearance is reduced in patients with hepatic impairment.

Pharmacology

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Mechanism of Action

Mirtazapine is a tetracyclic antidepressant that enhances central noradrenergic and serotonergic activity. It acts as an antagonist at central presynaptic alpha2-adrenergic autoreceptors and heteroreceptors, leading to an increase in norepinephrine and serotonin release. It is also a potent antagonist of 5-HT2 and 5-HT3 serotonin receptors and H1 histamine receptors. It has moderate affinity for alpha1-adrenergic and muscarinic cholinergic receptors.
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Pharmacokinetics

Absorption:

Bioavailability: Approximately 50%
Tmax: Approximately 2 hours
FoodEffect: Food has minimal effect on the rate and extent of absorption.

Distribution:

Vd: Approximately 2.5 L/kg
ProteinBinding: Approximately 85%
CnssPenetration: Yes

Elimination:

HalfLife: 20-40 hours (average 26 hours)
Clearance: Reduced in renal and hepatic impairment
ExcretionRoute: Approximately 75% via urine, 15% via feces
Unchanged: <10%
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Pharmacodynamics

OnsetOfAction: Clinical antidepressant effects may be seen within 1-2 weeks, but full effect may take 4-6 weeks.
PeakEffect: 4-6 weeks for full antidepressant effect.
DurationOfAction: Due to long half-life, once-daily dosing provides sustained effect.

Safety & Warnings

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BLACK BOX WARNING

Antidepressants increased the risk compared to placebo of suicidal thinking and behavior (suicidality) in children, adolescents, and young adults in short-term studies of Major Depressive Disorder (MDD) and other psychiatric disorders. Anyone considering the use of Mirtazapine or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. Short-term studies did not show an increase in the risk of suicidality with antidepressants compared to placebo in adults beyond age 24; there was a reduction in risk with antidepressants compared to placebo in adults aged 65 and older. Depression and certain other psychiatric disorders are themselves associated with increases in the risk of suicide. Patients of all ages who are started on antidepressant therapy should be monitored appropriately and observed closely for clinical worsening, suicidality, or unusual changes in behavior. Families and caregivers should be advised of the need for close observation and communication with the prescriber.
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Side Effects

Urgent Side Effects: Seek Medical Help Right Away

Although rare, some people may experience severe and potentially life-threatening side effects while taking this medication. If you notice any of the following symptoms, contact your doctor or seek immediate medical attention:

Signs of an allergic reaction, such as:
+ Rash
+ Hives
+ Itching
+ Red, swollen, blistered, or peeling skin (with or without fever)
+ Wheezing
+ Tightness in the chest or throat
+ Trouble breathing, swallowing, or talking
+ Unusual hoarseness
+ Swelling of the mouth, face, lips, tongue, or throat
Signs of low sodium levels, including:
+ Headache
+ Trouble focusing
+ Memory problems
+ Feeling confused
+ Weakness
+ Seizures
+ Changes in balance
Redness or irritation of the palms of hands or soles of feet
Flu-like symptoms
Mouth irritation or mouth sores
Restlessness
Fast or abnormal heartbeat
Severe dizziness or fainting
Joint pain

Serotonin Syndrome: A Potentially Life-Threatening Condition

There is a risk of developing serotonin syndrome, a severe and potentially deadly condition, especially when taking certain other medications. If you experience any of the following symptoms, contact your doctor immediately:

Agitation
Changes in balance
Confusion
Hallucinations
Fever
Fast or abnormal heartbeat
Flushing
Muscle twitching or stiffness
Seizures
Shivering or shaking
Excessive sweating
Severe diarrhea, nausea, or vomiting
Severe headache

Severe Skin Reactions: Stevens-Johnson Syndrome (SJS) and Toxic Epidermal Necrolysis (TEN)

This medication may cause severe skin reactions, including SJS and TEN, which can be life-threatening. If you notice any of the following symptoms, seek medical help right away:

Red, swollen, blistered, or peeling skin
Red or irritated eyes
Sores in your mouth, throat, nose, eyes, genitals, or any areas of skin
Fever
Chills
Body aches
Shortness of breath
Swollen glands

Other Side Effects

Most people do not experience severe side effects, but some may occur. If you notice any of the following side effects, contact your doctor if they bother you or do not go away:

Feeling dizzy, sleepy, tired, or weak
Constipation
Dry mouth
Increased appetite
Weight gain
Strange or odd dreams

Reporting Side Effects

If you have questions or concerns about side effects, contact your doctor. You can also report side effects to the FDA at 1-800-332-1088 or online at https://www.fda.gov/medwatch.
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Seek Immediate Medical Attention If You Experience:

  • Worsening depression or anxiety
  • Thoughts about self-harm or suicide
  • Agitation, restlessness, panic attacks
  • Insomnia or new sleep problems
  • Irritability, aggression, or violent urges
  • Acting on dangerous impulses
  • An extreme increase in activity and talking (mania/hypomania)
  • Fever, sore throat, or other signs of infection (rare, but serious)
  • Signs of serotonin syndrome (e.g., confusion, hallucinations, rapid heart rate, sweating, muscle stiffness, twitching, severe nausea/vomiting/diarrhea)
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Before Using This Medicine

Before Taking This Medication: Important Information to Share with Your Doctor

It is essential to inform your doctor about the following:

Any allergies you have, including allergies to this medication, its components, or other substances, such as foods or drugs. Be sure to describe the allergic reaction and its symptoms.
If you are currently taking or have recently taken certain medications, including:
+ Anxiety or sleep aids like alprazolam or diazepam
+ Depression or Parkinson's disease medications, such as isocarboxazid, phenelzine, tranylcypromine, selegiline, or rasagiline, within the last 14 days, as this may lead to very high blood pressure
+ Linezolid or methylene blue, as these can interact with this medication
Note that this is not an exhaustive list of all potential interactions. Therefore, it is crucial to discuss all your medications, including prescription and over-the-counter drugs, natural products, and vitamins, with your doctor and pharmacist.
Before starting, stopping, or changing the dose of any medication, consult with your doctor to ensure it is safe to do so in conjunction with this medication. Your doctor and pharmacist need to know about all your health problems and medications to determine if it is safe for you to take this medication.
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Precautions & Cautions

It is essential to inform all your healthcare providers, including doctors, nurses, pharmacists, and dentists, that you are taking this medication. The full effects of this drug may not be apparent for several weeks.

Do not abruptly stop taking this medication without consulting your doctor, as this may increase your risk of side effects. If you need to discontinue this drug, your doctor will instruct you on how to gradually stop taking it to minimize potential risks. Until you understand how this medication affects you, avoid driving and engaging in activities that require alertness.

Certain individuals may be at a higher risk of developing eye problems while taking this drug. Your doctor may recommend an eye exam to assess your risk. Immediately contact your doctor if you experience eye pain, changes in vision, or swelling and redness in or around the eye.

This medication has been associated with rare cases of low white blood cell counts, which can increase the risk of infection. If you have a history of low white blood cell counts, inform your doctor. Be vigilant for signs of infection, such as fever, chills, or sore throat, and contact your doctor promptly if you experience any of these symptoms.

There have been reports of abnormal heart rhythms (long QT on ECG) and rare instances of sudden death in individuals taking this medication. Discuss these risks with your doctor. Additionally, this drug may cause elevated cholesterol and triglyceride levels; consult with your doctor to monitor these levels.

Regular blood tests will be necessary, as directed by your doctor. It is recommended that you avoid consuming alcohol while taking this medication. Before using marijuana, cannabis, or prescription or over-the-counter drugs that may cause drowsiness, consult with your doctor.

If you have phenylketonuria (PKU), discuss this with your doctor, as some products contain phenylalanine. Individuals 65 years or older should exercise caution when taking this medication, as they may be more susceptible to side effects.

If you are pregnant, plan to become pregnant, or are breastfeeding, inform your doctor to discuss the potential benefits and risks to you and your baby.
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Overdose Information

Overdose Symptoms:

  • Disorientation
  • Drowsiness
  • Impaired memory
  • Tachycardia
  • Sedation
  • Hypotension (less common)
  • Respiratory depression (rare)
  • Coma (rare)

What to Do:

Seek immediate medical attention. Call 911 or your local emergency number. For poison control, call 1-800-222-1222. Treatment is generally supportive and symptomatic.

Drug Interactions

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Contraindicated Interactions

  • Monoamine Oxidase Inhibitors (MAOIs) (concurrent use or within 14 days of stopping/starting MAOI)
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Major Interactions

  • Other serotonergic drugs (e.g., SSRIs, SNRIs, triptans, fentanyl, lithium, tramadol, St. John's Wort) - increased risk of serotonin syndrome.
  • CNS depressants (e.g., alcohol, benzodiazepines, opioids, sedatives, hypnotics) - additive CNS depression.
  • Strong CYP3A4 inhibitors (e.g., ketoconazole, itraconazole, clarithromycin, protease inhibitors) - increased mirtazapine levels.
  • Strong CYP1A2 inhibitors (e.g., cimetidine, fluvoxamine) - increased mirtazapine levels.
  • Strong CYP2D6 inhibitors (e.g., quinidine, fluoxetine, paroxetine) - increased mirtazapine levels.
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Moderate Interactions

  • CYP3A4 inducers (e.g., carbamazepine, phenytoin, rifampin) - decreased mirtazapine levels, potentially reducing efficacy.
  • Warfarin - rare reports of increased INR/prothrombin time.
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Minor Interactions

  • Anticholinergic drugs - potential for additive anticholinergic effects (e.g., dry mouth, constipation).

Monitoring

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Baseline Monitoring

Mood and suicidal ideation assessment

Rationale: To establish baseline severity of depression and suicidality, especially important due to Black Box Warning.

Timing: Prior to initiation and regularly during treatment.

Weight and BMI

Rationale: Mirtazapine is associated with weight gain and increased appetite.

Timing: Prior to initiation.

Blood pressure and heart rate

Rationale: To assess for orthostatic hypotension, though less common than with other antidepressants.

Timing: Prior to initiation.

Complete Blood Count (CBC) with differential

Rationale: Rare risk of agranulocytosis. Baseline is prudent, especially if patient has history of blood dyscrasias.

Timing: Prior to initiation (consider).

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Routine Monitoring

Mood and suicidal ideation assessment

Frequency: Weekly for the first 4 weeks, then every 2-4 weeks for the next 8 weeks, then periodically as clinically indicated.

Target: Improvement in depressive symptoms, absence of suicidal thoughts/behaviors.

Action Threshold: Worsening depression, emergence of suicidal thoughts/behaviors, or unusual changes in behavior warrant immediate re-evaluation and potential dose adjustment or discontinuation.

Weight and BMI

Frequency: Monthly for the first few months, then every 3-6 months.

Target: Maintain healthy weight.

Action Threshold: Significant or rapid weight gain may necessitate dietary counseling or consideration of alternative therapy.

Blood pressure and heart rate

Frequency: Periodically, especially during dose titration.

Target: Within normal limits.

Action Threshold: Symptomatic orthostatic hypotension or significant changes.

CBC with differential

Frequency: If patient develops fever, sore throat, or other signs of infection.

Target: Normal leukocyte count.

Action Threshold: Significant decrease in white blood cell count (especially neutrophils) warrants immediate discontinuation and further investigation.

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Symptom Monitoring

  • Worsening depression
  • Suicidal thoughts or behavior
  • Unusual changes in behavior (e.g., agitation, irritability, anxiety, panic attacks, insomnia, aggression, impulsivity, akathisia, hypomania, mania)
  • Signs of serotonin syndrome (e.g., agitation, hallucinations, delirium, tachycardia, labile blood pressure, hyperthermia, hyperreflexia, incoordination, nausea, vomiting, diarrhea)
  • Signs of infection (e.g., fever, sore throat, flu-like symptoms) due to rare risk of agranulocytosis
  • Excessive sedation or dizziness
  • Significant weight gain
  • Dry mouth, constipation

Special Patient Groups

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Pregnancy

Mirtazapine is classified as Pregnancy Category C. Use during pregnancy should only be considered if the potential benefit justifies the potential risk to the fetus. Neonates exposed to antidepressants in late third trimester have developed complications requiring prolonged hospitalization, respiratory support, and tube feeding. These complications can arise immediately upon delivery.

Trimester-Specific Risks:

First Trimester: Limited data, but generally no increased risk of major congenital malformations observed.
Second Trimester: Limited data, but generally no increased risk of major congenital malformations observed.
Third Trimester: Potential for neonatal withdrawal symptoms (e.g., respiratory distress, feeding difficulties, jitteriness, irritability, persistent pulmonary hypertension of the newborn (PPHN) has been reported with SSRIs/SNRIs, but less clear for mirtazapine).
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Lactation

Mirtazapine is excreted into breast milk in small amounts. The relative infant dose (RID) is generally low (e.g., 1-3%). Monitor breastfed infants for sedation, poor feeding, and poor weight gain. Weigh the benefits of breastfeeding against the potential risks to the infant.

Infant Risk: L3 (Moderate risk) - Limited data suggest low risk, but monitor infant for adverse effects.
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Pediatric Use

Mirtazapine is not FDA approved for use in pediatric patients. Clinical trials in pediatric patients with MDD did not demonstrate efficacy and showed an increased risk of suicidality compared to placebo. Use in this population should be approached with extreme caution and only after careful consideration of risks vs. benefits, with close monitoring for adverse effects, especially suicidality.

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Geriatric Use

Elderly patients may be more sensitive to the effects of mirtazapine, particularly sedation and orthostatic hypotension. Clearance may be reduced due to age-related decline in renal and hepatic function. Lower starting doses and slower titration are recommended. Monitor closely for adverse effects.

Clinical Information

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Clinical Pearls

  • Mirtazapine is often chosen for depression when insomnia, anxiety, or significant weight loss are prominent symptoms, due to its sedating and appetite-stimulating effects.
  • The sedating effect is often more pronounced at lower doses (e.g., 15 mg) due to greater H1 receptor antagonism. At higher doses (e.g., 30-45 mg), the noradrenergic effects may become more prominent, potentially reducing sedation.
  • Weight gain is a common and often significant side effect, which can be beneficial for underweight patients but problematic for others.
  • Unlike many other antidepressants, mirtazapine has minimal sexual side effects, making it a preferred choice for some patients.
  • The orally disintegrating tablet (SolTab) form is useful for patients who have difficulty swallowing pills or for whom adherence might be an issue.
  • Always counsel patients on the Black Box Warning regarding suicidality, especially in younger individuals, and the importance of reporting any changes in mood or behavior.
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Alternative Therapies

  • Selective Serotonin Reuptake Inhibitors (SSRIs) (e.g., fluoxetine, sertraline, escitalopram)
  • Serotonin-Norepinephrine Reuptake Inhibitors (SNRIs) (e.g., venlafaxine, duloxetine)
  • Tricyclic Antidepressants (TCAs) (e.g., amitriptyline, nortriptyline)
  • Other atypical antidepressants (e.g., bupropion, vortioxetine, vilazodone)
  • Electroconvulsive Therapy (ECT) for severe or treatment-resistant depression
  • Transcranial Magnetic Stimulation (TMS)
  • Psychotherapy (e.g., Cognitive Behavioral Therapy - CBT)
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Cost & Coverage

Average Cost: $50 - $200 per 30 tablets (45mg)
Generic Available: Yes
Insurance Coverage: Tier 1 or Tier 2 (for generic), Tier 3 or higher (for brand)
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General Drug Facts

If your symptoms or health issues persist or worsen, it's essential to contact your doctor promptly. To ensure safe use, never share your medication with others, and avoid taking medication prescribed to someone else. This medication is accompanied by a Medication Guide, a patient fact sheet that provides important information. Please read it carefully and review it again whenever you receive a refill. If you have any questions or concerns about this medication, don't hesitate to consult with your doctor, pharmacist, or other healthcare provider. In the event of a suspected overdose, immediately call your local poison control center or seek emergency medical attention. Be prepared to provide details about the overdose, including the medication taken, the amount, and the time it occurred.