Remeron 45mg Soltabs
Overview
What is this medicine?
How to Use This Medicine
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.
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.
Available Forms & Alternatives
Available Strengths:
Generic Alternatives:
Dosing & Administration
Adult Dosing
Condition-Specific Dosing:
Pediatric Dosing
Dose Adjustments
Renal Impairment:
Hepatic Impairment:
Pharmacology
Mechanism of Action
Pharmacokinetics
Absorption:
Distribution:
Elimination:
Pharmacodynamics
Safety & Warnings
BLACK BOX WARNING
Side Effects
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.
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)
Before Using This Medicine
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.
Precautions & Cautions
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.
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
Contraindicated Interactions
- Monoamine Oxidase Inhibitors (MAOIs) (concurrent use or within 14 days of stopping/starting MAOI)
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.
Moderate Interactions
- CYP3A4 inducers (e.g., carbamazepine, phenytoin, rifampin) - decreased mirtazapine levels, potentially reducing efficacy.
- Warfarin - rare reports of increased INR/prothrombin time.
Minor Interactions
- Anticholinergic drugs - potential for additive anticholinergic effects (e.g., dry mouth, constipation).
Monitoring
Baseline Monitoring
Rationale: To establish baseline severity of depression and suicidality, especially important due to Black Box Warning.
Timing: Prior to initiation and regularly during treatment.
Rationale: Mirtazapine is associated with weight gain and increased appetite.
Timing: Prior to initiation.
Rationale: To assess for orthostatic hypotension, though less common than with other antidepressants.
Timing: Prior to initiation.
Rationale: Rare risk of agranulocytosis. Baseline is prudent, especially if patient has history of blood dyscrasias.
Timing: Prior to initiation (consider).
Routine Monitoring
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.
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.
Frequency: Periodically, especially during dose titration.
Target: Within normal limits.
Action Threshold: Symptomatic orthostatic hypotension or significant changes.
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.
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
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:
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.
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.
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
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.
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)