Levetiracetam

1 INDICATIONS AND USAGE Levetiracetam in Sodium Chloride Injection is an antiepileptic drug indicated for adult patients (16 years and older) when oral administration is temporarily not feasible. Levetiracetam in Sodium Chloride Injection is indicated for adjunct therapy in adults (≥16 years of age) with the following seizure types when oral administration is temporarily not feasible: Partial onset seizures ( 1.1 ) Myoclonic seizures in patients with juvenile myoclonic epilepsy ( 1.2 ) Primary generalized tonic-clonic seizures ( 1.3 ) 1.1 Partial-Onset Seizures Levetiracetam in Sodium Chloride Injection is indicated as adjunctive therapy in the treatment of partial-onset seizures in adults with epilepsy. 1.2 Myoclonic Seizures in Patients with Juvenile Myoclonic Epilepsy Levetiracetam in Sodium Chloride Injection is indicated as adjunctive therapy in the treatment of myoclonic seizures in adults with juvenile myoclonic epilepsy. 1.3 Primary Generalized Tonic-Clonic Seizures Levetiracetam in Sodium Chloride Injection is indicated as adjunctive therapy in the treatment of primary generalized tonic-clonic seizures in adults with idiopathic generalized epilepsy. 1.4 Limitations of Use Levetiracetam in Sodium Chloride Injection is an antiepileptic drug indicated for adult patients (16 years and older) when oral administration is temporarily not feasible.

6 ADVERSE REACTIONS The following serious adverse reactions are discussed in more details in other sections of labeling: Psychiatric Reactions [see Warnings and Precautions ( 5.1 )] Somnolence and Fatigue [see Warnings and Precautions ( 5.2 )] Anaphylaxis and Angioedema [see Warnings and Precautions ( 5.3 )] Serious Dermatological Reactions [see Warnings and Precautions ( 5.4 )] Coordination Difficulties [see Warnings and Precautions ( 5.5 )] Withdrawal Seizures [see Warnings and Precautions ( 5.6 )] Hematologic Abnormalities [see Warnings and Precautions ( 5.7 )] Seizure Control During Pregnancy [see Warnings and Precautions ( 5.8 )] Most common adverse reactions (incidence in levetiracetam-treated patients is ≥5% more than in placebo-treated patients) include: somnolence, asthenia, infection, and dizziness ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Dr. Reddy’s Laboratories Inc., at 1-888-375-3784 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. The adverse reactions that result from levetiracetam injection use include all of those reported for levetiracetam tablets and oral solution. Equivalent doses of intravenous (IV) levetiracetam and oral levetiracetam result in equivalent Cmax, Cmin, and total systemic exposure to levetiracetam when the IV levetiracetam is administered as a 15-minute infusion. Partial-Onset Seizures In controlled clinical studies using levetiracetam tablets in adults with partial-onset seizures [see Clinical Studies (14.1)], the most common adverse reactions in adult patients receiving levetiracetam in combination with other AEDs, for events with rates greater than placebo, were somnolence, asthenia, infection and dizziness. Of the most common adverse reactions in adults experiencing partial-onset seizures, asthenia, somnolence and dizziness occurred predominantly during the first 4 weeks of treatment with levetiracetam. Table 2 lists adverse reactions that occurred in at least 1% of adult epilepsy patients receiving levetiracetam tablets in placebo-controlled studies and were numerically more common than in patients treated with placebo. In these studies, either levetiracetam or placebo was added to concurrent AED therapy. Adverse reactions were usually mild to moderate in intensity. Table 2: Adverse Reactions* In Placebo-Controlled, Adjunctive Studies In Adults Experiencing Partial-Onset Seizures Body System/ Adverse Reaction Levetiracetam (N=769) % Placebo (N=439) % Body as a Whole Asthenia 15 9 Somnolence 15 8 Headache 14 8 Pain 7 6 Digestive System Anorexia 3 2 Nervous System Somnolence 15 8 Dizziness 9 4 Depression 4 2 Nervousness 4 2 Ataxia 3 1 Vertigo 3 1 Amnesia 2 1 Anxiety 2 1 Hostility 2 1 Paresthesia 2 1 Emotional Lability 2 0 Respiratory System Pharyngitis 6 4 Rhinitis 4 3 Cough Increased 2 1 Sinusitis 2 1 Special Senses Diplopia 2 1 * Adverse reactions occurred in at least 1% of levetiracetam-treated patients and occurred more frequently than placebo-treated patients In controlled adult clinical studies using levetiracetam tablets, 15% of patients receiving levetiracetam and 12% receiving placebo either discontinued or had a dose reduction as a result of an adverse reaction. Table 3 lists the most common (>1%) adverse reactions that resulted in discontinuation or dose reduction and that occurred more frequently in levetiracetam-treated patients than in placebo-treated patients. Table 3: Adverse Reactions that Resulted in Discontinuation or Dose Reduction in Placebo-Controlled Studies in Adults Experiencing Partial-Onset Seizures Adverse Reaction L e vetiracetam ( N=769) % P lacebo ( N=439) % Somnolence 4 2 Dizziness 1 0 Myoclonic Seizures Although the pattern of adverse reactions in this study seems somewhat different from that seen in patients with partial seizures, this is likely due to the much smaller number of patients in this study compared to partial seizure studies. The adverse reaction pattern for patients with JME is expected to be essentially the same as for patients with partial seizures. In the controlled clinical study using levetiracetam tablets in patients with myoclonic seizures, the most common adverse reactions in patients using levetiracetam in combination with other AEDs, for events with rates greater than placebo, were somnolence, neck pain, and pharyngitis. Table 4 lists adverse reactions that occurred in at least 5% of juvenile myoclonic epilepsy patients experiencing myoclonic seizures treated with levetiracetam tablets and were numerically more common than in patients treated with placebo. In this study, either levetiracetam or placebo was added to concurrent AED therapy. Adverse reactions were usually mild to moderate in intensity. Table 4: Adverse Reactions* in a Placebo-Controlled, Adjunctive Study in Patients 12 Years of Age and Older with Myoclonic Seizures Body System/ Adverse Reaction Levetiracetam (N=60) % Placebo (N=60) % Ear and labyrinth disorders Vertigo 5 3 Infections and infestations Pharyngitis 7 0 Influenza 5 2 Musculoskeletal and connective tissue disorders Neck pain 8 2 Nervous system disorders Somnolence 12 2 Psychiatric disorders Depression 5 2 * Adverse reactions occurred in at least 5% of levetiracetam-treated patients and occurred more frequently than placebo-treated patients In the placebo-controlled study using levetiracetam tablets in patients with JME, 8% of patients receiving levetiracetam and 2% receiving placebo either discontinued or had a dose reduction as a result of an adverse reaction. The adverse reactions that led to discontinuation or dose reduction and that occurred more frequently in levetiracetam-treated patients than in placebo-treated patients are presented in Table 5. Table 5: Adverse Reactions that Resulted in Discontinuation or Dose Reduction in Patients with Juvenile Myoclonic Epilepsy Adverse Reaction L e vetiracetam ( N=60) % P lacebo ( N=60) % Anxiety 3 2 Depressed mood 2 0 Depression 2 0 Diplopia 2 0 Hypersomnia 2 0 Insomnia 2 0 Irritability 2 0 Nervousness 2 0 Somnolence 2 0 Primary Generalized Tonic-Clonic Seizures Although the pattern of adverse reactions in this study seems somewhat different from that seen in patients with partial seizures, this is likely due to the much smaller number of patients in this study compared to partial seizure studies. The adverse reaction pattern for patients with primary generalized tonic-clonic (PGTC) seizures is expected to be essentially the same as for patients with partial seizures. In the controlled clinical study that included patients with PGTC seizures, the most common adverse reaction in patients receiving levetiracetam oral formulation in combination with other AEDs, for events with rates greater than placebo was nasopharyngitis. Table 6 lists adverse reactions that occurred in at least 5% of idiopathic generalized epilepsy patients experiencing PGTC seizures treated with levetiracetam and were numerically more common than in patients treated with placebo. In this study, either levetiracetam or placebo was added to concurrent AED therapy. Table 6: Adverse Reactions* in a Placebo-Controlled, Adjunctive Study in Patients with PGTC Seizures Body System/ Adverse Reaction Levetiracetam (N=79) % Placebo (N=84) % Gastrointestinal disorders Diarrhea 8 7 General disorders and administration site conditions Fatigue 10 8 Infections and infestations Nasopharyngitis 14 5 Psychiatric disorders Irritability 6 2 Mood swings 5 1 * Adverse reactions occurred in at least 5% of levetiracetam-treated patients and occurred more frequently than placebo-treated patients In the placebo-controlled study, 5% of patients receiving levetiracetam and 8% receiving placebo either discontinued or had a dose reduction during the treatment period as a result of an adverse reaction. This study was too small to adequately characterize the adverse reactions that could be expected to result in discontinuation of treatment in this population. It is expected that the adverse reactions that would lead to discontinuation in this population would be similar to those resulting in discontinuation in other epilepsy trials (see Tables 3 and 5). In addition, the following adverse reactions were seen in other controlled adult studies of levetiracetam: balance disorder, disturbance in attention, eczema, memory impairment, myalgia, and blurred vision. Comparison of Gender, Age and Race The overall adverse reaction profile of levetiracetam was similar between females and males. There are insufficient data to support a statement regarding the distribution of adverse reactions by age and race. 6.2 Postmarketing Experience The following adverse reactions have been identified during post-approval use of levetiracetam. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. In addition to the adverse reactions listed above [see Adverse Reactions ( 6.1 )] , the following adverse reactions have been reported in patients receiving marketed levetiracetam worldwide. The listing is alphabetized: abnormal liver function test, acute kidney injury, agranulocytosis, anaphylaxis, angioedema, choreoathetosis, drug reaction with eosinophilia and systemic symptoms (DRESS), dyskinesia, erythema multiforme, hepatic failure, hepatitis, hyponatremia, muscular weakness, pancreatitis, pancytopenia (with bone marrow suppression identified in some of these cases), panic attack, thrombocytopenia, weight loss, and worsening of seizures. Alopecia has been reported with levetiracetam use; recovery was observed in majority of cases where levetiracetam was discontinued.