Lisdexamfetamine 40mg Chewable Tabs

Manufacturer SUN PHARMACEUTICALS Active Ingredient Lisdexamfetamine Chewable Tablets(lis dex am FET a meen) Pronunciation liss-dex-am-FET-uh-meen
WARNING: This drug has a high risk of misuse. This can lead to alcohol or drug use disorder. Misuse or abuse of this drug can lead to overdose or death. The risk is higher with higher doses or when used in ways that are not approved like snorting or injecting it. Do not give this drug to anyone else. This drug may also be habit-forming if taken for a long time. Do not take for longer than you have been told by your doctor. Use only as you were told. Tell your doctor if you have ever had alcohol or drug use disorder. You will be watched closely while taking this drug. Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets. Throw away unused or expired drugs as you have been told. @ COMMON USES: It is used to treat attention deficit problems with hyperactivity.It is used to treat binge eating disorder.It may be given to you for other reasons. Talk with the doctor.
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Drug Class
Central Nervous System Stimulant
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Pharmacologic Class
Prodrug of Dextroamphetamine; Norepinephrine-Dopamine Reuptake Inhibitor (NDRI) and Releaser
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Pregnancy Category
Not available
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FDA Approved
Feb 2007
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DEA Schedule
Schedule II

Overview

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What is this medicine?

Lisdexamfetamine is a medication used to treat Attention-Deficit/Hyperactivity Disorder (ADHD) and moderate to severe Binge Eating Disorder (BED). It is a prodrug, meaning it's inactive until your body converts it into an active form (dextroamphetamine). This active form works by affecting certain natural chemicals in your brain to help improve focus, attention, and control over impulsive behaviors.
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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 at the same time every day, with or without food. To minimize sleep disturbances, avoid taking this medication late in the day. Be sure to chew the medication thoroughly before swallowing.

Storing and Disposing of Your Medication

Store your medication at room temperature, protected from light and moisture. Keep it in a dry place, away from bathrooms. To ensure safety, store your medication in a secure location where children and others cannot access it. Consider using a locked box or area to store your medication. Keep all medications out of reach of pets. When disposing of unused or expired medication, do not flush it down the toilet or pour it down the drain unless instructed to do so. Instead, check with your pharmacist for guidance on proper disposal or participate in a local drug take-back program.

Missing a Dose

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

  • Take exactly as prescribed, usually once daily in the morning, with or without food.
  • Do not take in the afternoon or evening as it may cause sleep problems.
  • Do not crush, chew, or divide the chewable tablet if not intended (though it is a chewable tablet, ensure proper administration).
  • Store securely to prevent misuse or diversion.
  • Avoid alcohol, as it may increase side effects.
  • Inform your doctor about all other medications, supplements, and herbal products you are taking.
  • Regularly monitor blood pressure and heart rate as advised by your doctor.
  • Maintain a healthy diet and monitor growth in children.

Dosing & Administration

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Adult Dosing

Standard Dose: 30 mg once daily, titrated to effect
Dose Range: 30 - 70 mg

Condition-Specific Dosing:

ADHD: Initial 30 mg once daily in the morning; may increase by 10-20 mg/day at weekly intervals to a maximum of 70 mg/day.
Binge Eating Disorder (BED): Initial 30 mg once daily in the morning; may increase by 20 mg/day at weekly intervals to a target dose of 50-70 mg/day. Maximum 70 mg/day.
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Pediatric Dosing

Neonatal: Not established
Infant: Not established
Child: 6-12 years (ADHD): Initial 30 mg once daily in the morning; may increase by 10-20 mg/day at weekly intervals to a maximum of 70 mg/day.
Adolescent: 13-17 years (ADHD): Initial 30 mg once daily in the morning; may increase by 10-20 mg/day at weekly intervals to a maximum of 70 mg/day.
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Dose Adjustments

Renal Impairment:

Mild: No dosage adjustment necessary (CrCl 60-89 mL/min).
Moderate: Consider reducing dose (CrCl 30-59 mL/min). Max 50 mg/day.
Severe: Reduce dose (CrCl < 30 mL/min). Max 30 mg/day.
Dialysis: End-stage renal disease (ESRD): Max 30 mg/day. Administer after dialysis.

Hepatic Impairment:

Mild: No specific adjustment recommended.
Moderate: No specific adjustment recommended.
Severe: No specific adjustment recommended. Use with caution due to potential for increased exposure to dextroamphetamine.

Pharmacology

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Mechanism of Action

Lisdexamfetamine is a prodrug that is converted to dextroamphetamine. Dextroamphetamine is a central nervous system (CNS) stimulant. It is thought to block the reuptake of norepinephrine and dopamine into the presynaptic neuron and increase the release of these monoamines into the extraneuronal space. The therapeutic effect in ADHD and BED is thought to be mediated through these actions.
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Pharmacokinetics

Absorption:

Bioavailability: Not directly measured for lisdexamfetamine, but dextroamphetamine bioavailability is high.
Tmax: Lisdexamfetamine: ~1 hour; Dextroamphetamine: ~3.5 hours (after oral administration of lisdexamfetamine)
FoodEffect: Food does not affect the extent of absorption (AUC) or Cmax of dextroamphetamine, but may prolong Tmax by approximately 1 hour.

Distribution:

Vd: Dextroamphetamine: 2.4 L/kg
ProteinBinding: Dextroamphetamine: 15-20%
CnssPenetration: Yes

Elimination:

HalfLife: Lisdexamfetamine: <1 hour; Dextroamphetamine: 10-13 hours (adults), 9-11 hours (children)
Clearance: Dextroamphetamine: Approximately 0.7 L/kg/hr
ExcretionRoute: Renal (primarily as dextroamphetamine and its metabolites)
Unchanged: Lisdexamfetamine: Negligible; Dextroamphetamine: Approximately 50% (dependent on urine pH)
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Pharmacodynamics

OnsetOfAction: Approximately 1-2 hours (for therapeutic effects of dextroamphetamine)
PeakEffect: Approximately 3.5 hours (for dextroamphetamine plasma concentrations)
DurationOfAction: Up to 14 hours

Safety & Warnings

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BLACK BOX WARNING

CNS stimulants, including lisdexamfetamine, have a high potential for abuse and dependence. Assess the risk of abuse prior to prescribing, and monitor for signs of abuse and dependence during therapy.
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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 medical attention immediately:

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 high blood pressure, including:
+ Severe headache
+ Dizziness
+ Passing out
+ Changes in eyesight
Fast or abnormal heartbeat
Trouble controlling body movements
Difficulty controlling sounds, such as humming, throat clearing, yelling, or making loud noises
Changes in skin color, including pale, blue, gray, purple, or red discoloration of hands, feet, or other areas
Numbness, pain, tingling, or cold feeling in hands or feet
Sores or wounds on fingers or toes
Muscle pain or weakness, dark urine, or trouble passing urine

If you have a history of heart problems or heart defects, inform your doctor, as sudden deaths have occurred in people with these conditions. Additionally, if a family member has an abnormal heartbeat or died suddenly, notify your doctor. Seek medical help immediately if you experience any signs of heart problems, such as:

Chest pain
Abnormal heartbeat
Shortness of breath
Severe dizziness or passing out

A potentially life-threatening condition called serotonin syndrome may occur if you take this medication with certain other drugs. Call your doctor right away if you experience:

Agitation
Changes in balance
Confusion
Hallucinations
Fever
Fast or abnormal heartbeat
Flushing
Muscle twitching or stiffness
Seizures
Shivering or shaking
Excessive sweating
Severe diarrhea
Upset stomach
Throwing up
Severe headache

Other Possible Side Effects

While many people may not experience side effects or only have minor ones, it's essential to be aware of the following potential side effects. If you're concerned about any of these symptoms or if they persist, contact your doctor:

Anxiety
Constipation
Diarrhea
Stomach pain
Upset stomach
Throwing up
Decreased appetite
Dry mouth
Feeling jittery
Weight loss
Trouble sleeping
Dizziness

This is not an exhaustive list of possible side effects. If you have questions or concerns, consult 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:

  • Chest pain, shortness of breath, or fainting (seek immediate medical attention)
  • New or worsening aggression, hostility, or agitation
  • New psychotic symptoms (e.g., hearing voices, believing things that are not true)
  • New manic symptoms (e.g., extreme energy, racing thoughts, unusual behavior)
  • Numbness, coolness, or pain in fingers or toes, or unexplained wounds on digits (Raynaud's phenomenon)
  • Blurred vision
  • Severe headache
  • Unexplained fever, muscle stiffness, or confusion (signs of serotonin syndrome)
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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 conditions and situations to ensure safe treatment:

Any allergies you have, including allergies to this medication, its components, or other substances, such as foods or drugs. Describe the allergic reaction and its symptoms.
A family history of or personal experience with:
+ Blood vessel disease
+ High blood pressure
+ Heart structure problems or other heart conditions
+ Tourette's syndrome or tics
Existing health conditions, including:
+ Glaucoma
+ Agitation
+ Anxiety
+ Overactive thyroid
Past health issues, such as:
+ Drug abuse
+ Stroke
Current medications, including:
+ Acetazolamide
+ Sodium bicarbonate
+ Certain antidepressants or Parkinson's disease medications taken within the last 14 days (e.g., isocarboxazid, phenelzine, tranylcypromine, selegiline, or rasagiline), as they may cause very high blood pressure
+ Linezolid or methylene blue
Breastfeeding status: Do not breastfeed while taking this medication.

This list is not exhaustive, and it is crucial to discuss all your medications (prescription, over-the-counter, natural products, and vitamins) and health conditions with your doctor and pharmacist to ensure safe treatment. Never start, stop, or change the dose of any medication without consulting your doctor.
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Precautions & Cautions

Important Warnings and Cautions

It is essential to inform all your healthcare providers, including doctors, nurses, pharmacists, and dentists, that you are taking this medication. This drug is not intended for weight loss, and if you have any questions or concerns, you should discuss them with your doctor.

Caution with Daily Activities
Until you know how this medication affects you, avoid driving and engaging in activities that require alertness and clear vision.

Tolerance and Dependence
Long-term or high-dose use of this medication can lead to tolerance, where the drug may not work as well, and you may need higher doses to achieve the same effect. If you experience a decrease in the medication's effectiveness, contact your doctor. Do not take more than the prescribed dose. Additionally, regular use of this medication can cause dependence, and stopping it abruptly may lead to withdrawal symptoms. Consult your doctor before reducing the dose or stopping the medication, and follow their instructions carefully.

Heart-Related Precautions
You may need to undergo heart tests before starting this medication. Your doctor will monitor your blood pressure and heart rate, and you should follow their instructions for checking these vital signs. This medication may cause high blood pressure, so it is crucial to monitor your blood pressure regularly.

Interactions with Other Medications and Lab Tests
Inform all your healthcare providers and lab personnel that you are taking this medication, as it may affect certain lab tests. Before using over-the-counter (OTC) products that may increase blood pressure, such as cough or cold medications, diet pills, stimulants, non-steroidal anti-inflammatory drugs (NSAIDs) like ibuprofen or naproxen, and some natural products or aids, consult your doctor.

Severe Skin Reaction
A severe skin reaction, known as Stevens-Johnson syndrome or toxic epidermal necrolysis, may occur. This condition can cause severe health problems, permanent damage, and even death. Seek immediate medical attention if you experience symptoms such as red, swollen, blistered, or peeling skin (with or without fever), red or irritated eyes, or sores in your mouth, throat, nose, or eyes.

Behavior and Mood Changes
This medication may cause new or worsening behavior and mood changes, including changes in thinking, anger, and hallucinations. If you or a family member have a history of mental or mood problems, such as depression or bipolar illness, or if a family member has committed suicide, inform your doctor. Contact your doctor immediately if you experience hallucinations, changes in behavior, or signs of mood changes, such as depression, thoughts of suicide, nervousness, emotional ups and downs, abnormal thinking, anxiety, or loss of interest in life.

Effects on Growth in Children and Teens
This medication may affect growth in children and teens. Regular growth checks may be necessary, and you should discuss this with your doctor. This medication is not approved for use in children under 6 years of age, as it may increase the risk of long-term weight loss in this age group.

Pregnancy and Breastfeeding
If you are pregnant or plan to become pregnant, inform your doctor. You will need to discuss the benefits and risks of using this medication during pregnancy.
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Overdose Information

Overdose Symptoms:

  • Restlessness
  • Tremor
  • Hyperreflexia
  • Rapid breathing
  • Confusion
  • Assaultiveness
  • Hallucinations
  • Panic states
  • Hyperpyrexia
  • Rhabdomyolysis
  • Hypertension or hypotension
  • Cardiac arrhythmias
  • Circulatory collapse
  • Nausea
  • Vomiting
  • Diarrhea
  • Abdominal cramps
  • Convulsions
  • Coma

What to Do:

Call 911 or Poison Control immediately (1-800-222-1222). Seek emergency medical attention. Management includes symptomatic and supportive measures, including gastric lavage, activated charcoal, and sedation for CNS overstimulation.

Drug Interactions

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Contraindicated Interactions

  • Monoamine Oxidase Inhibitors (MAOIs) or within 14 days of MAOI use (risk of hypertensive crisis)
  • Linezolid (MAOI activity)
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Major Interactions

  • Serotonergic drugs (e.g., SSRIs, SNRIs, TCAs, triptans, fentanyl, lithium, tramadol, St. John's Wort) - risk of serotonin syndrome
  • Antihypertensives (may counteract effects)
  • Alkalinizing agents (e.g., sodium bicarbonate, acetazolamide) - increase dextroamphetamine levels and prolong half-life
  • Acidifying agents (e.g., ascorbic acid, ammonium chloride) - decrease dextroamphetamine levels and shorten half-life
  • Antipsychotics (e.g., phenothiazines, haloperidol) - may antagonize stimulant effects
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Moderate Interactions

  • Tricyclic Antidepressants (TCAs) - increased cardiovascular effects
  • Proton Pump Inhibitors (PPIs) / H2 Blockers - minimal effect on absorption, but monitor for altered pH effects
  • Opioids (e.g., meperidine) - increased risk of serotonin syndrome
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Minor Interactions

  • Not available

Monitoring

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Baseline Monitoring

Blood Pressure (BP) and Heart Rate (HR)

Rationale: Stimulants can cause increases in BP and HR, which may be clinically significant.

Timing: Prior to initiation of therapy.

Electrocardiogram (ECG)

Rationale: Consider for patients with pre-existing cardiac conditions or family history of sudden cardiac death/arrhythmias.

Timing: Prior to initiation, if indicated.

Height and Weight

Rationale: Monitor for growth suppression in pediatric patients.

Timing: Prior to initiation.

Psychiatric History (including family history of bipolar disorder, tics, psychosis)

Rationale: Stimulants can exacerbate or unmask psychiatric symptoms.

Timing: Prior to initiation.

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Routine Monitoring

Blood Pressure (BP) and Heart Rate (HR)

Frequency: At each visit or at least every 3-6 months.

Target: Within normal limits for age/patient.

Action Threshold: Persistent elevation above normal range; consider dose reduction or discontinuation.

Height and Weight

Frequency: Every 3-6 months in pediatric patients.

Target: Normal growth trajectory.

Action Threshold: Significant deviation from expected growth curve; consider drug holiday or alternative therapy.

Psychiatric Symptoms (e.g., agitation, aggression, new-onset psychosis, mania, tics)

Frequency: At each visit.

Target: Absence of new or worsening symptoms.

Action Threshold: Emergence or worsening of symptoms; consider dose adjustment or discontinuation.

Abuse/Diversion Potential

Frequency: At each visit.

Target: No signs of abuse or diversion.

Action Threshold: Signs of abuse/diversion; implement appropriate management strategies.

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Symptom Monitoring

  • Chest pain
  • Shortness of breath
  • Syncope
  • Palpitations
  • New or worsening aggression
  • Hostility
  • Psychotic symptoms (e.g., hallucinations, delusions)
  • Manic symptoms (e.g., elevated mood, racing thoughts, decreased need for sleep)
  • Tics or Tourette's syndrome exacerbation
  • Peripheral vasculopathy (e.g., Raynaud's phenomenon)
  • Unexplained wounds on fingers or toes
  • Blurred vision
  • Severe headache

Special Patient Groups

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Pregnancy

Use during pregnancy should be considered only if the potential benefit justifies the potential risk to the fetus. There are no adequate and well-controlled studies in pregnant women. Amphetamines can cause fetal harm, including premature delivery and low birth weight. Neonates exposed to amphetamines during pregnancy may experience withdrawal symptoms.

Trimester-Specific Risks:

First Trimester: Potential for increased risk of congenital malformations, though data are conflicting.
Second Trimester: Risk of premature delivery and low birth weight.
Third Trimester: Risk of withdrawal symptoms in the neonate (e.g., agitation, irritability, poor feeding, tremor, hypertonia, somnolence).
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Lactation

Dextroamphetamine is excreted into human milk. Because of the potential for serious adverse reactions in breastfed infants (e.g., agitation, insomnia, anorexia, reduced weight gain), advise women not to breastfeed during treatment with lisdexamfetamine.

Infant Risk: High (agitation, insomnia, anorexia, reduced weight gain, potential for long-term neurodevelopmental effects).
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Pediatric Use

Approved for ADHD in children 6 years and older. Monitor growth (height and weight) carefully. Long-term safety and efficacy in children under 6 years have not been established.

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Geriatric Use

Clinical studies of lisdexamfetamine did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects. In general, dose selection for an elderly patient should be cautious, usually starting at the low end of the dosing range, reflecting the greater frequency of decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy.

Clinical Information

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Clinical Pearls

  • Lisdexamfetamine is a prodrug, meaning its effects are smoother and longer-lasting compared to immediate-release amphetamines, with less potential for 'drug liking' due to slower onset.
  • The chewable tablet can be chewed thoroughly and swallowed, or dispersed in water, orange juice, or yogurt and consumed immediately.
  • Patients should be advised to avoid taking the medication in the late afternoon or evening to prevent insomnia.
  • Careful cardiovascular assessment is crucial before initiating therapy, especially in patients with pre-existing cardiac conditions.
  • Monitor for signs of abuse and dependence, as lisdexamfetamine is a Schedule II controlled substance.
  • Growth suppression can occur in pediatric patients; regular monitoring of height and weight is essential.
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Alternative Therapies

  • Methylphenidate (e.g., Concerta, Ritalin, Focalin)
  • Amphetamine/Dextroamphetamine (e.g., Adderall, Mydayis)
  • Atomoxetine (Strattera)
  • Guanfacine extended-release (Intuniv)
  • Clonidine extended-release (Kapvay)
  • Bupropion (Wellbutrin - off-label for ADHD)
  • Cognitive Behavioral Therapy (CBT) for ADHD and BED
  • Other psychotherapies for BED (e.g., Interpersonal Therapy, Dialectical Behavior Therapy)
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Cost & Coverage

Average Cost: Varies widely, typically $300-$400+ per 30 tablets
Generic Available: Yes
Insurance Coverage: Tier 2 or 3 (Brand), Tier 1 or 2 (Generic)
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General Drug Facts

If your symptoms or health issues persist or worsen, it's essential to contact your doctor for further guidance. To ensure your safety, never share your medication with others or take someone else's medication.

This medication is accompanied by a Medication Guide, which is a valuable resource that provides important information about your treatment. Please read this guide carefully and review it again whenever you receive a refill of your medication. If you have any questions or concerns about your medication, don't hesitate to discuss them with your doctor, pharmacist, or other healthcare provider.

In the event of a suspected overdose, immediately contact your local poison control center or seek emergency medical attention. When reporting the incident, be prepared to provide details about the medication taken, the amount consumed, and the time it occurred. This information will help healthcare professionals provide you with the most effective treatment.