Lacosamide Oral Solution
Lacosamide · Solution · Oral
Uses
Lacosamide oral solution is indicated for: Treatment of partial-onset seizures in patients 1 month of age and older ( 1.1 ) Adjunctive therapy in the treatment of primary generalized tonic-clonic seizures in patients 4 years of age and older ( 1.2 ) 1.1 Partial-Onset Seizures Lacosamide oral solution is indicated for the treatment of partial-onset seizures in patients 1 month of age and older. 1.2 Primary Generalized Tonic-Clonic Seizures Lacosamide oral solution is indicated as adjunctive therapy in the treatment of primary generalized tonic-clonic seizures in patients 4 years of age and older.
Dosage and administration
2. DOSAGE AND ADMINISTRATION Adults (17 years and older): Initial dosage for monotherapy for the treatment of partial-onset seizures is 100 mg twice daily ( 2.1 ) Initial dosage for adjunctive therapy for the treatment of partial-onset seizures or primary generalized tonic- clonic seizures is 50 mg twice daily ( 2.1 ) Maximum recommended dosage for monotherapy and adjunctive therapy is 200 mg twice daily ( 2.1 ) Pediatric Patients 1 month to less than 17 years: The recommended dosage is based on body weight and is administered orally twice daily ( 2.1 ) Increase dosage based on clinical response and tolerability, no more frequently than once per week ( 2.1 ) Dose adjustment is recommended for severe renal impairment ( 2. 4, 12.3 ) Dose adjustment is recommended for mild or moderate hepatic impairment; use in patients with severe hepatic impairment is not recommended ( 2. 5, 12.3 ) 2.1 Dosage Information The recommended dosage for monotherapy and adjunctive therapy for partial-onset seizures in patients 1 month of age and older and for adjunctive therapy for primary generalized tonic-clonic seizures in patients 4 years of age and older is included in Table 1. In pediatric patients, the recommended dosing regimen is dependent upon body weight. Dosage should be increased based on clinical response and tolerability, no more frequently than once per week. Titration increments should not exceed those shown in Table 1. Table 1: Recommended Dosages for Partial-Onset Seizures (Monotherapy or Adjunctive Therapy) in Patients 1 month and Older, and for Primary Generalized Tonic-Clonic Seizures (Adjunctive Therapy) in Patients 4 Years of Age and Older* Age and Body Weight Initial Dosage Titration Regimen Maintenance Dosage Adults (17 years and older) Monotherapy**: 100 mg twice daily (200 mg per day) Adjunctive Therapy: 50 mg twice daily (100 mg per day) Increase by 50 mg twice daily (100 mg per day) every week Monotherapy**: 150 mg to 200 mg twice daily (300 mg to 400 mg per day) Adjunctive Therapy: 100 mg to 200 mg twice daily (200 mg to 400 mg per day) Pediatric patients weighing at least 50 kg 50 mg twice daily (100 mg per day) Increase by 50 mg twice daily (100 mg per day) every week Monotherapy**: 150 mg to 200 mg twice daily (300 mg to 400 mg per day) Adjunctive Therapy: 100 mg to 200 mg twice daily (200 mg to 400 mg per day) Pediatric patients weighing 30 kg to less than 50 kg 1 mg/kg twice daily (2 mg/kg/day) Increase by 1 mg/kg twice daily (2 mg/kg/day) every week 2 mg/kg to 4 mg/kg twice daily (4 mg/kg/day to 8 mg/kg/day) Pediatric patients weighing 11 kg to less than 30 kg 1 mg/kg twice daily (2 mg/kg/day) Increase by 1 mg/kg twice daily (2 mg/kg/day) every week 3 mg/kg to 6 mg/kg twice daily (6 mg/kg/day to 12 mg/kg/day) Pediatric patients weighing 6 kg to less than 11 kg ± Pediatric patients weighing less than 6 kg ± Oral: 1 mg/kg twice daily (2 mg/kg/day) Oral: Increase by 1 mg/kg twice daily (2 mg/kg/day) every week Oral: 3.75 mg/kg to 7.5 mg/kg twice daily (7.5 mg/kg/day to 15 mg/kg/day) *When not specified, the dosage is the same for monotherapy for partial-onset seizures and adjunctive therapy for partial-onset seizures or primary generalized tonic-clonic seizures . **Monotherapy for partial-onset seizures only ± indicated only for partial-onset seizures In adjunctive clinical trials in adult patients with partial-onset seizures, a dosage higher than 200 mg twice daily (400 mg per day) was not more effective and was associated with a substantially higher rate of adverse reactions [ see Adverse Reactions ( 6.1 ) and Clinical Studies ( 14.2 ) ]. 2.2 Alternate Initial Dosage Information For monotherapy and adjunctive therapy for partial-onset seizures in patients 17 years of age and older and for adjunctive therapy for primary generalized tonic-clonic seizures in patients 17 years of age and older, an alternate initial dosing regimen for week 1 (e.g., including a loading dose and/or a higher initial dosage) may be administered in patients for whom achieving the recommended maintenance dosage in a shorter timeframe is clinically indicated (see Table 2). The alternate initial dosage regimen should be continued for one week. Lacosamide oral solution may then be titrated based on clinical response and tolerability, no more frequently than once per week, if needed. The loading dose should be administered with medical supervision because of the possibility of increased incidence of adverse reactions, including central nervous system (CNS) and cardiovascular adverse reactions [see Warnings and Precautions (5.2, 5.3), Adverse Reactions (6.1), and Clinical Pharmacology (12.3)] . Titration increments should not exceed those shown in Table 2. Table 2: Alternate Initial Dosing Regimen to Achieve the Maintenance Dosage in a Shorter Timeframe if Clinically Indicated* Age and Body Weight Alternate Initial Dosage Titration Regimen Maintenance Dosage Adults (17 years and older) Single loading dose: 200 mg 12 hours later initiate: 100 mg twice daily (200 mg per day) Increase by 50 mg twice daily (100 mg per day) at weekly intervals, if needed Monotherapy**: 150 mg to 200 mg twice daily (300 mg to 400 mg per day) Adjunctive Therapy: 100 mg to 200 mg twice daily (200 mg to 400 mg per day) * when not specified, the dosage is the same for monotherapy for partial-onset seizures and adjunctive therapy for partial-onset seizures or primary generalized tonic-clonic seizures. **Monotherapy for partial-onset seizures only Additional pediatric use information is approved for UCB, Inc.’s VIMPAT ® (lacosamide) oral solution. However, due to UCB, Inc.’s marketing exclusivity rights, this drug product is not labeled with that information.
Dosage forms and strengths
Lacosamide oral solution, USP
• 10 mg/mL: clear, colorless to yellow or yellow-brown, strawberry-flavored liquid 10 mg/mL oral solution (3)
Contraindications
None. None
Warnings and precautions
Monitor patients for suicidal behavior and ideation ( 5.1 ) Lacosamide oral solution may cause dizziness and ataxia ( 5.2 ) Cardiac Rhythm and Conduction Abnormalities: Obtaining ECG before beginning and after titration to steady-state maintenance is recommended in patients with underlying proarrhythmic conditions or on concomitant medications that affect cardiac conduction; closely monitor these patients ( 5.3 , 7.2 ) Lacosamide oral solution may cause syncope ( 5.4 ) Lacosamide oral solution should be gradually withdrawn to minimize the potential of increased seizure frequency ( 5.5 ) Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS)/ Multi-Organ Hypersensitivity: Discontinue if no alternate etiology ( 5.6 ) 5.1 Suicidal Behavior and Ideation Antiepileptic drugs (AEDs), including Lacosamide oral solution, increase the risk of suicidal thoughts or behavior in patients taking these drugs for any indication. Patients treated with any AED for any indication should be monitored for the emergence or worsening of depression, suicidal thoughts or behavior, and/or any unusual changes in mood or behavior. Pooled analyses of 199 placebo-controlled clinical trials (mono- and adjunctive therapy) of 11 different AEDs showed that patients randomized to one of the AEDs had approximately twice the risk (adjusted Relative Risk 1.8, 95% CI:1.2, 2.7) of suicidal thinking or behavior compared to patients randomized to placebo. In these trials, which had a median treatment duration of 12 weeks, the estimated incidence of suicidal behavior or ideation among 27,863 AED-treated patients was 0.43%, compared to 0.24% among 16,029 placebo-treated patients, representing an increase of approximately one case of suicidal thinking or behavior for every 530 patients treated. There were four suicides in drug-treated patients in the trials and none in placebo-treated patients, but the number of events is too small to allow any conclusion about drug effect on suicide. The increased risk of suicidal thoughts or behavior with AEDs was observed as early as one week after starting treatment with AEDs and persisted for the duration of treatment assessed. Because most trials included in the analysis did not extend beyond 24 weeks, the risk of suicidal thoughts or behavior beyond 24 weeks could not be assessed. The risk of suicidal thoughts or behavior was generally consistent among drugs in the data analyzed. The finding of increased risk with AEDs of varying mechanisms of action and across a range of indications suggests that the risk applies to all AEDs used for any indication. The risk did not vary substantially by age (5 to 100 years) in the clinical trials analyzed. Table 3 shows absolute and relative risk by indication for all evaluated AEDs. Table 3: Risk by Indication for Antiepileptic Drugs in the Pooled Analysis Indication Placebo Patients with Events Per 1000 Patients Drug Patients with Events Per 1000 Patients Relative Risk: Incidence of Events in Drug Patients/ Incidence in Placebo Patients Risk Difference: Additional Drug Patients with Events Per 1000 Patients Epilepsy 1.0 3.4 3.5 2.4 Psychiatric 5.7 8.5 1.5 2.9 Other 1.0 1.8 1.9 0.9 Total 2.4 4.3 1.8 1.9 The relative risk for suicidal thoughts or behavior was higher in clinical trials for epilepsy than in clinical trials for psychiatric or other conditions, but the absolute risk differences were similar. Anyone considering prescribing Lacosamide oral solution or any other AED must balance this risk with the risk of untreated illness. Epilepsy and many other illnesses for which antiepileptics are prescribed are themselves associated with morbidity and mortality and an increased risk of suicidal thoughts and behavior. Should suicidal thoughts and behavior emerge during treatment, the prescriber needs to consider whether the emergence of these symptoms in any given patient may be related to the illness being treated. 5.2 Dizziness and Ataxia Lacosamide oral solution may cause dizziness and ataxia in adult and pediatric patients. In adult patients with partial-onset seizures taking 1 to 3 concomitant AEDs, dizziness was experienced by 25% of patients randomized to the recommended doses (200 to 400 mg/day) of lacosamide (compared with 8% of placebo patients) and was the adverse reaction most frequently leading to discontinuation (3%). Ataxia was experienced by 6% of patients randomized to the recommended doses (200 to 400 mg/day) of lacosamide (compared to 2% of placebo patients). The onset of dizziness and ataxia was most commonly observed during titration. There was a substantial increase in these adverse reactions at doses higher than 400 mg/day [ see Adverse Reactions ( 6.1 ) ]. If a loading dose is clinically indicated, administer with medical supervision because of the possibility of increased incidence of adverse reactions, including CNS adverse reactions such as dizziness and ataxia. 5.3 Cardiac Rhythm and Conduction Abnormalities PR Interval Prolongation, Atrioventricular Block, and Ventricular Tachyarrhythmia Dose-dependent prolongations in PR interval with lacosamide have been observed in clinical studies in adult patients and in healthy volunteers [ see Clinical Pharmacology ( 12.2 ) ]. In adjunctive clinical trials in adult patients with partial-onset seizures, asymptomatic first-degree atrioventricular (AV) block was observed as an adverse reaction in 0.4% (4/944) of patients randomized to receive lacosamide and 0% (0/364) of patients randomized to receive placebo. One case of profound bradycardia was observed in a patient during a 15-minute infusion of 150 mg lacosamide . When lacosamide is given with other drugs that prolong the PR interval, further PR prolongation is possible. In the postmarketing setting, there have been reports of cardiac arrhythmias in patients treated with lacosamide , including bradycardia, AV block, and ventricular tachyarrhythmia, which have rarely resulted in asystole, cardiac arrest, and death.
Side effects
The following serious adverse reactions are described below and elsewhere in the labeling: Suicidal Behavior and Ideation [ see Warnings and Precautions ( 5.1 ) ] Dizziness and Ataxia [ see Warnings and Precautions ( 5.2 ) ] Cardiac Rhythm and Conduction Abnormalities [ see Warnings and Precautions ( 5.3 ) ] Syncope [ see Warnings and Precautions ( 5.4 ) ] Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS)/Multiorgan Hypersensitivity Reactions [ see Warnings and Precautions ( 5.6 ) ] Adjunctive therapy: Most common adverse reactions in adults (≥10% and greater than placebo) are diplopia, headache, dizziness, nausea, and somnolence ( 6.1 ) Monotherapy: Most common adverse reactions are similar to those seen in adjunctive therapy studies ( 6.1 ) Pediatric patients: Adverse reactions are similar to those seen in adult patients ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact AvkARE at 1-855-361-3993 or www.avkare.com or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. Lacosamide in Adults In the premarketing development of adjunctive therapy for partial-onset seizures, 1327 adult patients received lacosamide tablets in controlled and uncontrolled trials, of whom 1000 were treated for longer than 6 months, and 852 for longer than 12 months. The monotherapy development program for partial-onset seizures included 425 adult patients, 310 of whom were treated for longer than 6 months, and 254 for longer than 12 months. Partial-Onset Seizures Monotherapy Historical-Control Trial (Study 1) In the monotherapy trial for partial-onset seizures, 16% of patients randomized to receive lacosamide at the recommended doses of 300 and 400 mg/day discontinued from the trial as a result of an adverse reaction. The adverse reaction most commonly (≥1% on lacosamide ) leading to discontinuation was dizziness. Adverse reactions that occurred in this study were generally similar to those that occurred in adjunctive placebo-controlled studies. One adverse reaction, insomnia, occurred at a rate of ≥2% and was not reported at a similar rate in previous studies. This adverse reaction has also been observed in postmarketing experience [ see Adverse Reactions ( 6.2 ) ]. Because this study did not include a placebo control group, causality could not be established. Dizziness, headache, nausea, somnolence, and fatigue all occurred at lower incidences during the AED Withdrawal Phase and Monotherapy Phase, compared with the Titration Phase [ see Clinical Studies ( 14.1 ) ]. Adjunctive Therapy Controlled Trials (Studies 2, 3, and 4) In adjunctive therapy controlled clinical trials for partial-onset seizures, the rate of discontinuation as a result of an adverse reaction was 8% and 17% in patients randomized to receive lacosamide at the recommended doses of 200 and 400 mg/day, respectively, 29% at 600 mg/day (1.5 times greater than the maximum recommended dose), and 5% in patients randomized to receive placebo. The adverse reactions most commonly (>1% on lacosamide and greater than placebo) leading to discontinuation were dizziness, ataxia, vomiting, diplopia, nausea, vertigo, and blurred vision. Table 4 gives the incidence of adverse reactions that occurred in ≥2% of adult patients with partial-onset seizures in the lacosamide total group and for which the incidence was greater than placebo. Table 4: Adverse Reactions Incidence in Adjunctive Therapy Pooled, Placebo-Controlled Trials in Adult Patients with Partial-Onset Seizures (Studies 2, 3, and 4) Adverse Reaction Placebo N=364 % Lacosamide 200 mg/day N=270% Lacosamide 400 mg/day N=471% Lacosamide 600 mg/day* N=203% Lacosamide Total N=944% Ear and labyrinth disorder Vertigo 1 5 3 4 4 Eye disorders Diplopia 2 6 10 16 11 Blurred Vision 3 2 9 16 8 Gastrointestinal disorders Nausea 4 7 11 17 11 Vomiting 3 6 9 16 9 Diarrhea 3 3 5 4 4 General disorders and administration site conditions Fatigue 6 7 7 15 9 Gait disturbance <1 <1 2 4 2 Asthenia 1 2 2 4 2 Injury, poisoning and procedural complications Contusion 3 3 4 2 3 Skin laceration 2 2 3 3 3 Nervous system disorders Dizziness 8 16 30 53 31 Headache 9 11 14 12 13 Ataxia 2 4 7 15 8 Somnolence 5 5 8 8 7 Tremor 4 4 6 12 7 Nystagmus 4 2 5 10 5 Balance disorder 0 1 5 6 4 Memory impairment 2 1 2 6 2 Psychiatric disorders Depression 1 2 2 2 2 Skin and subcutaneous disorders Pruritus 1 3 2 3 2 *600 mg dose is 1.5 times greater than the maximum recommended dose. The overall adverse reaction rate was similar in male and female patients. Although there were few non- Caucasian patients, no differences in the incidences of adverse reactions compared to Caucasian patients were observed. Lacosamide in Pediatric Patients Safety of lacosamide was evaluated in clinical studies of pediatric patients 1 month to less than 17 years of age for the treatment of partial-onset seizures. Across studies in pediatric patients with partial-onset seizures, 847 patients 1 month to less than 17 years of age received lacosamide oral solution or tablet, of whom 596 received lacosamide for at least 1 year. Adverse reactions reported in clinical studies of pediatric patients 1 month to less than 17 years of age were similar to those seen in adult patients. Primary Generalized Tonic-Clonic Seizures in Patients (4 Years of Age and Older) Adjunctive Therapy Trial (Study 5) In the adjunctive therapy placebo-controlled trial for primary generalized tonic-clonic seizures, adverse reactions that occurred in the study were generally similar to those that occurred in partial-onset seizure placebo-controlled studies.
Drug interactions
7.1 Strong CYP3A4 or CYP2C9 Inhibitors Patients with renal or hepatic impairment who are taking strong inhibitors of CYP3A4 and CYP2C9 may have a significant increase in exposure to Lacosamide oral solution. Dose reduction may be necessary in these patients. 7.2 Concomitant Medications that Affect Cardiac Conduction Lacosamide oral solution should be used with caution in patients on concomitant medications that affect cardiac conduction (sodium channel blockers, beta-blockers, calcium channel blockers, potassium channel blockers) including those that prolong PR interval (including sodium channel blocking AEDs), because of a risk of AV block, bradycardia, or ventricular tachyarrhythmia. In such patients, obtaining an ECG before beginning Lacosamide oral solution, and after Lacosamide oral solution is titrated to steady-state, is recommended. In addition, these patients should be closely monitored if they are administered lacosamide through the intravenous route [ see Warnings and Precautions ( 5.3 ) ].
Use in specific populations
• Pregnancy: Based on animal data, may cause fetal harm ( 8.1 ) 8.1 Pregnancy Risk Summary Available data from the North American Antiepileptic Drug (NAAED) pregnancy registry, a prospective cohort study, case reports, and a case series with lacosamide use in pregnant women are insufficient to identify a drug associated risk of major birth defects, miscarriage or other adverse maternal or fetal outcomes. Lacosamide produced developmental toxicity (increased embryofetal and perinatal mortality, growth deficit) in rats following administration during pregnancy. Developmental neurotoxicity was observed in rats following administration during a period of postnatal development corresponding to the third trimester of human pregnancy. These effects were observed at doses associated with clinically relevant plasma exposures (see Data). The background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2 to 4% and 15 to 20%, respectively. Data Animal Data Oral administration of lacosamide to pregnant rats (20, 75, or 200 mg/kg/day) and rabbits (6.25, 12.5, or 25 mg/kg/day) during the period of organogenesis did not produce any effects on the incidences of fetal structural abnormalities. However, the maximum doses evaluated were limited by maternal toxicity in both species and embryofetal death in rats. These doses were associated with maternal plasma lacosamide exposures (AUC) approximately 2 and 1 times (rat and rabbit, respectively) that in humans at the maximum recommended human dose (MRHD) of 400 mg/day. In two studies in which lacosamide (25, 70, or 200 mg/kg/day and 50, 100, or 200 mg/kg/day) was orally administered to rats throughout pregnancy and lactation, increased perinatal mortality and decreased body weights in the offspring were observed at the highest dose tested. The no-effect dose for pre- and postnatal developmental toxicity in rats (70 mg/kg/day) was associated with a maternal plasma lacosamide AUC similar to that in humans at the MRHD. Oral administration of lacosamide (30, 90, or 180 mg/kg/day) to rats during the neonatal and juvenile periods of development resulted in decreased brain weights and long-term neurobehavioral changes (altered open field performance, deficits in learning and memory). The early postnatal period in rats is generally thought to correspond to late pregnancy in humans in terms of brain development. The no-effect dose for developmental neurotoxicity in rats was associated with a plasma lacosamide AUC less than that in humans at the MRHD. In Vitro Data Lacosamide has been shown in vitro to interfere with the activity of collapsin response mediator protein-2 (CRMP-2), a protein involved in neuronal differentiation and control of axonal outgrowth. Potential adverse effects on CNS development related to this activity cannot be ruled out. 8.2 Lactation Risk Summary Data from published literature indicate that lacosamide is present in human milk. There are reports of increased sleepiness in breastfed infants exposed to lacosamide ( see Clinical Considerations ). There is no information on the effects of lacosamide on milk production. The developmental and health benefits of breastfeeding should be considered along with the mother’s clinical need for Lacosamide oral solution and any potential adverse effects on the breastfed infant from Lacosamide oral solution or from the underlying maternal condition. Clinical Considerations Monitor infants exposed to lacosamide through breastmilk for excess sedation. 8.4 Pediatric Use Partial-Onset Seizures Safety and effectiveness of lacosamide for the treatment of partial-onset seizures have been established in pediatric patients 1 month to less than 17 years of age. Use of lacosamide in this age group is supported by evidence from adequate and well- controlled studies of lacosamide in adults with partial-onset seizures, pharmacokinetic data from adult and pediatric patients, and safety data in 847 pediatric patients 1 month to less than 17 years of age [ see Adverse Reactions( 6.1 ), Clinical Pharmacology ( 12.3 ), and Clinical Studies ( 14.1 , 14.2 ) ]. Safety and effectiveness in pediatric patients below 1 month of age have not been established. Primary Generalized Tonic-Clonic Seizures Safety and effectiveness of lacosamide as adjunctive therapy in the treatment of primary generalized tonic-clonic seizures in pediatric patients with idiopathic generalized epilepsy 4 years of age and older was established in a 24-week double-blind, randomized, placebo-controlled, parallel-group, multi-center study (Study 5), which included 37 pediatric patients 4 years to less than 17 years of age [see Adverse Reactions (6.1) and Clinical Studies (14.3)] . Safety and effectiveness in pediatric patients below the age of 4 years have not been established. Animal Data Lacosamide has been shown in vitro to interfere with the activity of collapsin response mediator protein-2 (CRMP-2), a protein involved in neuronal differentiation and control of axonal outgrowth. Potential related adverse effects on CNS development cannot be ruled out. Administration of lacosamide to rats during the neonatal and juvenile periods of postnatal development (approximately equivalent to neonatal through adolescent development in humans) resulted in decreased brain weights and long-term neurobehavioral changes (altered open field performance, deficits in learning and memory). The no-effect dose for developmental neurotoxicity in rats was associated with a plasma lacosamide exposure (AUC) less than that in humans at the maximum recommended human dose of 400 mg/day.
Pregnancy
8.1 Pregnancy Risk Summary Available data from the North American Antiepileptic Drug (NAAED) pregnancy registry, a prospective cohort study, case reports, and a case series with lacosamide use in pregnant women are insufficient to identify a drug associated risk of major birth defects, miscarriage or other adverse maternal or fetal outcomes. Lacosamide produced developmental toxicity (increased embryofetal and perinatal mortality, growth deficit) in rats following administration during pregnancy. Developmental neurotoxicity was observed in rats following administration during a period of postnatal development corresponding to the third trimester of human pregnancy. These effects were observed at doses associated with clinically relevant plasma exposures (see Data). The background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2 to 4% and 15 to 20%, respectively. Data Animal Data Oral administration of lacosamide to pregnant rats (20, 75, or 200 mg/kg/day) and rabbits (6.25, 12.5, or 25 mg/kg/day) during the period of organogenesis did not produce any effects on the incidences of fetal structural abnormalities. However, the maximum doses evaluated were limited by maternal toxicity in both species and embryofetal death in rats. These doses were associated with maternal plasma lacosamide exposures (AUC) approximately 2 and 1 times (rat and rabbit, respectively) that in humans at the maximum recommended human dose (MRHD) of 400 mg/day. In two studies in which lacosamide (25, 70, or 200 mg/kg/day and 50, 100, or 200 mg/kg/day) was orally administered to rats throughout pregnancy and lactation, increased perinatal mortality and decreased body weights in the offspring were observed at the highest dose tested. The no-effect dose for pre- and postnatal developmental toxicity in rats (70 mg/kg/day) was associated with a maternal plasma lacosamide AUC similar to that in humans at the MRHD. Oral administration of lacosamide (30, 90, or 180 mg/kg/day) to rats during the neonatal and juvenile periods of development resulted in decreased brain weights and long-term neurobehavioral changes (altered open field performance, deficits in learning and memory). The early postnatal period in rats is generally thought to correspond to late pregnancy in humans in terms of brain development. The no-effect dose for developmental neurotoxicity in rats was associated with a plasma lacosamide AUC less than that in humans at the MRHD. In Vitro Data Lacosamide has been shown in vitro to interfere with the activity of collapsin response mediator protein-2 (CRMP-2), a protein involved in neuronal differentiation and control of axonal outgrowth. Potential adverse effects on CNS development related to this activity cannot be ruled out.
Pediatric use
8.4 Pediatric Use Partial-Onset Seizures Safety and effectiveness of lacosamide for the treatment of partial-onset seizures have been established in pediatric patients 1 month to less than 17 years of age. Use of lacosamide in this age group is supported by evidence from adequate and well- controlled studies of lacosamide in adults with partial-onset seizures, pharmacokinetic data from adult and pediatric patients, and safety data in 847 pediatric patients 1 month to less than 17 years of age [ see Adverse Reactions( 6.1 ), Clinical Pharmacology ( 12.3 ), and Clinical Studies ( 14.1 , 14.2 ) ]. Safety and effectiveness in pediatric patients below 1 month of age have not been established. Primary Generalized Tonic-Clonic Seizures Safety and effectiveness of lacosamide as adjunctive therapy in the treatment of primary generalized tonic-clonic seizures in pediatric patients with idiopathic generalized epilepsy 4 years of age and older was established in a 24-week double-blind, randomized, placebo-controlled, parallel-group, multi-center study (Study 5), which included 37 pediatric patients 4 years to less than 17 years of age [see Adverse Reactions (6.1) and Clinical Studies (14.3)] . Safety and effectiveness in pediatric patients below the age of 4 years have not been established. Animal Data Lacosamide has been shown in vitro to interfere with the activity of collapsin response mediator protein-2 (CRMP-2), a protein involved in neuronal differentiation and control of axonal outgrowth. Potential related adverse effects on CNS development cannot be ruled out. Administration of lacosamide to rats during the neonatal and juvenile periods of postnatal development (approximately equivalent to neonatal through adolescent development in humans) resulted in decreased brain weights and long-term neurobehavioral changes (altered open field performance, deficits in learning and memory). The no-effect dose for developmental neurotoxicity in rats was associated with a plasma lacosamide exposure (AUC) less than that in humans at the maximum recommended human dose of 400 mg/day.
Geriatric use
8.5 Geriatric Use There were insufficient numbers of elderly patients enrolled in partial-onset seizure trials (n=18) to adequately determine whether they respond differently from younger patients. No Lacosamide oral solution dose adjustment based on age is necessary. In elderly patients, dose titration should be performed with caution, usually starting at the lower end of the dosing range, reflecting the greater frequency of decreased hepatic function, decreased renal function, increased cardiac conduction abnormalities, and polypharmacy [see Dosage and Administration ( 2.1 , 2.4 , 2.5 ) and Clinical Pharmacology ( 12.3 )].
Overdosage
Events reported after an intake of more than 800 mg (twice the maximum recommended daily dosage) of Lacosamide oral solution include dizziness, nausea, and seizures (generalized tonic-clonic seizures, status epilepticus). Cardiac conduction disorders, confusion, decreased level of consciousness, cardiogenic shock, cardiac arrest, and coma have also been observed. Fatalities have occurred following lacosamide overdoses of several grams. There is no specific antidote for overdose with Lacosamide oral solution. Standard decontamination procedures should be followed. General supportive care of the patient is indicated including monitoring of vital signs and observation of the clinical status of patient. A Certified Poison Control Center should be contacted for up to date information on the management of overdose with Lacosamide oral solution. Standard hemodialysis procedures result in significant clearance of Lacosamide oral solution (reduction of systemic exposure by 50% in 4 hours). Hemodialysis may be indicated based on the patient's clinical state or in patients with significant renal impairment.
Description
The chemical name of lacosamide, the single (R)-enantiomer, is (R)-2-acetamido-N-benzyl-3‑ methoxypropionamide (IUPAC). Lacosamide is a functionalized amino acid. Its molecular formula is C 13 H 18 N 2 O 3 and its molecular weight is 250.30. The chemical structure is: Lacosamide is a white to light yellow powder. It is freely soluble in methanol, soluble in anhydrous ethanol, sparingly soluble in water, and practically insoluble in heptane. lacostructure 11.3 Lacosamide Oral Solution, USP Lacosamide oral solution, USP contains 10 mg of lacosamide per mL. The inactive ingredients are acesulfame potassium, carboxymethylcellulose sodium, citric acid (anhydrous), glycerin, methylparaben, polyethylene glycol, purified water, sodium chloride, sorbitol solution and strawberry natural and artificial flavor.
Mechanism of action
12.1 Mechanism of Action The precise mechanism by which Lacosamide oral solution exerts its antiepileptic effects in humans remains to be fully elucidated. In vitro electrophysiological studies have shown that lacosamide selectively enhances slow inactivation of voltage-gated sodium channels, resulting in stabilization of hyperexcitable neuronal membranes and inhibition of repetitive neuronal firing.
How supplied
16.1 How Supplied Lacosamide Oral Solution, USP 10 mg/mL is a clear, colorless to yellow or yellow-brown, strawberry-flavored liquid, free from particulate matter. It is supplied in bottles as follows: 200 mL glass bottles NDC 73190-103-20 16.2 Storage and Handling Store at 20°C to 25°C (68°F to 77°F); excursions permitted between 15°C to 30°C (59°F to 86°F) [See USP Controlled Room Temperature]. Do not freeze Lacosamide oral solution. Discard any unused lacosamide oral solution remaining after six (6) months of first opening the bottle
Patient information
Advise the patient or caregiver to read the FDA-approved patient labeling (Medication Guide). The Medication Guide accompanies the product and can also be accessed by calling 1-855-361-3993. Suicidal Thinking and Behavior Patients, their caregivers, and families should be counseled that AEDs, including Lacosamide oral solution, may increase the risk of suicidal thoughts and behavior and should be advised of the need to be alert for the emergence or worsening of symptoms of depression, any unusual changes in mood or behavior, or the emergence of suicidal thoughts, behavior, or thoughts about self-harm. Behaviors of concern should be reported immediately to healthcare providers [ see Warnings and Precautions ( 5.1 ) ]. Dizziness and Ataxia Patients should be counseled that Lacosamide oral solution use may cause dizziness, double vision, abnormal coordination and balance, and somnolence. Patients taking Lacosamide oral solution should be advised not to drive, operate complex machinery, or engage in other hazardous activities until they have become accustomed to any such effects associated with Lacosamide oral solution [ see Warnings and Precautions ( 5.2 ) ]. Cardiac Rhythm and Conduction Abnormalities Patients should be counseled that Lacosamide oral solution is associated with electrocardiographic changes that may predispose to irregular heart beat and syncope. Cardiac arrest has been reported. This risk is increased in patients with underlying cardiovascular disease, with heart conduction problems, or who are taking other medications that affect the heart. Patients should be made aware of and report cardiac signs or symptoms to their healthcare provider right away. Patients who develop syncope should lay down with raised legs and contact their health care provider [ see Warnings and Precautions ( 5.3 ) ]. Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS)/Multi-Organ Hypersensitivity Patients should be aware that Lacosamide oral solution may cause serious hypersensitivity reactions affecting multiple organs such as the liver and kidney. Lacosamide oral solution should be discontinued if a serious hypersensitivity reaction is suspected. Patients should also be instructed to report promptly to their physicians any symptoms of liver toxicity (e.g., fatigue, jaundice, dark urine) [ see Warnings and Precautions ( 5.6 ) ]. Pregnancy Registry Advise patients to notify their healthcare provider if they become pregnant or intend to become pregnant during Lacosamide oral solution therapy. [ see Use in Specific Populations ( 8.1 ) ]. Lactation Advise breastfeeding women using Lacosamide oral solution to monitor infants for excess sleepiness and to seek medical care if they notice this sign [see Use in Specific Populations ( 8.2 )] . Manufactured for: AvKARE Pulaski, TN 38478 USA L85I-AVK R-2608
Label text from the FDA structured product label by AvKARE (revised Sep 9, 2026). Long sections are shortened; the complete label is on DailyMed.
Active ingredients
- Lacosamide in 8 products
Lacosamide Oral Solution NDC products (8)
| NDC | Strength & form | Labeler | Type |
|---|---|---|---|
| 82983-427 | Lacosamide 10 mg/mL Solution | Ajenat Pharmaceuticals LLC | ANDA · DEA CV |
| 67877-732 | Lacosamide 10 mg/mL Solution | Ascend Laboratories, LLC | ANDA · DEA CV |
| 73190-103 | Lacosamide 10 mg/mL Solution | AvKARE | ANDA · DEA CV |
| 68999-885 | Lacosamide 10 mg/mL Solution | Chartwell Governmental & Specialty RX, LLC. | ANDA · DEA CV |
| 62135-885 | Lacosamide 10 mg/mL Solution | Chartwell RX, LLC | ANDA · DEA CV |
| 71921-411 | Lacosamide 10 mg/mL Solution | Florida Pharmaceutical Products, LLC | ANDA · DEA CV |
| 81033-428 | Lacosamide 10 mg/mL Solution | Kesin Pharma Corporation | ANDA · DEA CV |
| 81033-427 | Lacosamide 10 mg/mL Solution | Kesin Pharmaceutical Corporation | ANDA · DEA CV |
Frequently asked questions
What is Lacosamide Oral Solution used for?
Lacosamide oral solution is indicated for: Treatment of partial-onset seizures in patients 1 month of age and older ( 1.1 ) Adjunctive therapy in the treatment of primary generalized tonic-clonic seizures in patients 4 years of age and older ( 1.2 ) 1.1 Partial-Onset Seizures Lacosamide oral solution is indicated for the treatment of partial-onset seizures in patients 1 month of age and older.…
What are the side effects of Lacosamide Oral Solution?
The following serious adverse reactions are described below and elsewhere in the labeling: Suicidal Behavior and Ideation [ see Warnings and Precautions ( 5.1 ) ] Dizziness and Ataxia [ see Warnings and Precautions ( 5.2 ) ] Cardiac Rhythm and Conduction Abnormalities [ see Warnings and Precautions ( 5.3 ) ] Syncope [ see Warnings and Precautions ( 5.4 ) ] Drug Reaction with Eosinophilia and… See the full label for the complete list.
Who makes Lacosamide Oral Solution?
Lacosamide Oral Solution is listed by 8 labelers in the FDA NDC directory, including Ajenat Pharmaceuticals LLC, Ascend Laboratories, LLC, AvKARE, Chartwell Governmental & Specialty RX, LLC..