brivaracetam

RECENT MAJOR CHANGES Warnings and Precautions ( 5.5 ) 8/2025

1 INDICATIONS AND USAGE Brivaracetam oral solution is indicated for the treatment of partial-onset seizures in patients 1 month of age and older. Brivaracetam oral solution is indicated for the treatment of partial-onset seizures in patients 1 month of age and older. ( 1 )

2 DOSAGE AND ADMINISTRATION Adults (16 Years and Older): The recommended starting dosage for monotherapy or adjunctive therapy is 50 mg twice daily (100 mg per day). Based on individual patient tolerability and therapeutic response, the dosage may be adjusted down to 25 mg twice daily (50 mg per day) or up to 100 mg twice daily (200 mg per day). ( 2.1 ) Pediatric Patients (1 Month to less than 16 Years): The recommended dosage is based on body weight and is administered orally twice daily ( 2.1 ) Injection: for intravenous use only when oral administration is temporarily not feasible; dosing is the same as oral regimen. ( 2.1 , 2.3 ) Hepatic Impairment: Dose adjustment is recommended for all stages of hepatic impairment. ( 2.5 ) 2.1 Dosage Information Monotherapy or Adjunctive Therapy The recommended dosage for patients 1 month of age and older is included in Table 1. In pediatric patients weighing less than 50 kg, the recommended dosing regimen is dependent upon body weight. When initiating treatment, gradual dose escalation is not required. Dosage should be adjusted based on clinical response and tolerability. Table 1: Recommended Dosage for Patients 1 Month of Age and Older Age and Body Weight Initial Dosage Minimum and Maximum Maintenance Dosage Adults (16 years and older) 50 mg twice daily (100 mg per day) 25 mg to 100 mg twice daily (50 mg to 200 mg per day) Pediatric patients weighing 50 kg or more 25 mg to 50 mg twice daily (50 mg to 100 mg per day) 25 mg to 100 mg twice daily (50 mg to 200 mg per day) Pediatric patients weighing 20 kg to less than 50 kg 0.5 mg/kg to 1 mg/kg twice daily (1 mg/kg to 2 mg/kg per day) 0.5 mg/kg to 2 mg/kg twice daily (1 mg/kg to 4 mg/kg per day) Pediatric patients weighing 11 kg to less than 20 kg 0.5 mg/kg to 1.25 mg/kg twice daily (1 mg/kg to 2.5 mg/kg per day) 0.5 mg/kg to 2.5 mg/kg twice daily (1 mg/kg to 5 mg/kg per day) Pediatric patients weighing less than 11 kg 0.75 mg/kg to 1.5 mg/kg twice daily (1.5 mg/kg to 3 mg/kg per day) 0.75 mg/kg to 3 mg/kg twice daily (1.5 mg/kg to 6 mg/kg per day) 2.2 Administration Instructions for Brivaracetam Oral Solution Brivaracetam oral solution can be initiated with oral administration. Brivaracetam oral solution may be taken with or without food. Brivaracetam Oral Solution A calibrated measuring device is recommended to measure and deliver the prescribed dose accurately. A household teaspoon or tablespoon is not an adequate measuring device. When using brivaracetam oral solution oral solution, no dilution is necessary. Brivaracetam oral solution may also be administered using a nasogastric tube or gastrostomy tube. Discard any unused brivaracetam oral solution oral solution remaining after 5 months of first opening the bottle. 2.4 Discontinuation of Brivaracetam Oral Solution Avoid abrupt withdrawal from brivaracetam oral oslution in order to minimize the risk of increased seizure frequency and status epilepticus [see Warnings and Precautions (5.6) and Clinical Studies (14) ]. 2.5 Patients with Hepatic Impairment The recommended dosage for patients with hepatic impairment is included in Table 2 [see Use in Specific Populations (8.7) and Clinical Pharmacology (12.3) ] . Table 2: Recommended Dosage for Patients with Hepatic Impairment Age and Body Weight Initial Dosage Maximum Maintenance Dosage Adults (16 years and older) 25 mg twice daily (50 mg per day) 75 mg twice daily (150 mg per day) Pediatric patients weighing 50 kg or more Pediatric patients weighing 20 kg to less than 50 kg 0.5 mg/kg twice daily (1 mg/kg per day) 1.5 mg/kg twice daily (3 mg/kg per day) Pediatric patients weighing 11 kg to less than 20 kg 0.5 mg/kg twice daily (1 mg/kg per day) 2 mg/kg twice daily (4 mg/kg per day) Pediatric patients weighing less than 11 kg 0.75 mg/kg twice daily (1.5 mg/kg per day) 2.25 mg/kg twice daily (4.5 mg/kg per day) 2.6 Co-administration with Rifampin Increase the brivaracetam oral solution dosage in patients on concomitant rifampin by up to 100 …

3 DOSAGE FORMS AND STRENGTHS Brivaracetam oral solution, 10 mg/mL is a slightly viscous, clear, colorless to yellowish, raspberry-flavored liquid. Oral solution: 10 mg/mL ( 3 )

4 CONTRAINDICATIONS Hypersensitivity to brivaracetam or any of the inactive ingredients in brivaracetam oral solution (bronchospasm and angioedema have occurred) [see Warnings and Precautions (5.4) ] . Hypersensitivity to brivaracetam or any of the inactive ingredients in brivaracetam oral solution. ( 4 )

6 ADVERSE REACTIONS The following serious adverse reactions are described elsewhere in labeling: Suicidal Behavior and Ideation [see Warnings and Precautions (5.1) ] Neurological Adverse Reactions [see Warnings and Precautions (5.2) ] Psychiatric Adverse Reactions [see Warnings and Precautions (5.3) ] Hypersensitivity: Bronchospasm and Angioedema [see Warnings and Precautions (5.4) ] Serious Dermatologic Reactions [see Warnings and Precautions (5.5) ] Withdrawal of Antiepileptic Drugs [see Warnings and Precautions (5.6) ] Adults: Most common adverse reactions (at least 5% for brivaracetam oral solution and at least 2% more frequently than placebo) are somnolence/sedation, dizziness, fatigue, and nausea/vomiting. ( 6.1 ) Pediatric Patients: Most common adverse reactions are similar to those seen in adult patients. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Zhejiang Poly Pharm.Co., Ltd., at 1-888-998-3988 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. In all controlled and uncontrolled trials performed in adult epilepsy patients, brivaracetam was administered as adjunctive therapy to 2437 patients. Of these patients, 1929 were treated for at least 6 months, 1500 for at least 12 months, 1056 for at least 24 months, and 758 for at least 36 months. A total of 1558 patients (1099 patients treated with brivaracetam and 459 patients treated with placebo) constituted the safety population in the pooled analysis of Phase 3 placebo-controlled studies in patients with partial-onset seizures (Studies 1, 2, and 3) [see Clinical Studies (14) ] . The adverse reactions presented in Table 4 are based on this safety population; the median length of treatment in these studies was 12 weeks. Of the patients in those studies, approximately 51% were male, 74% were Caucasian, and the mean age was 38 years. In the Phase 3 controlled epilepsy studies, adverse events occurred in 68% of patients treated with brivaracetam and 62% treated with placebo. The most common adverse reactions occurring at a frequency of at least 5% in patients treated with brivaracetam doses of at least 50 mg/day and greater than placebo were somnolence and sedation (16%), dizziness (12%), fatigue (9%), and nausea and vomiting symptoms (5%). The discontinuation rates due to adverse events were 5%, 8%, and 7% for patients randomized to receive brivaracetam at the recommended doses of 50 mg, 100 mg, and 200 mg/day, respectively, compared to 4% in patients randomized to receive placebo. Table 4 lists adverse reactions for brivaracetam that occurred at least 2% more frequently for brivaracetam doses of at least 50 mg/day than placebo. Table 4: Adverse Reactions in Pooled Placebo-Controlled Adjunctive Therapy Studies in Adult Patients with Partial-Onset Seizures (Brivaracetam 50 mg/day, 100 mg/day, and 200 mg/day) Adverse Reactions Brivaracetam (N=803) % Placebo (N=459) % Gastrointestinal disorders Nausea/vomiting symptoms 5 3 Constipation 2 0 Nervous system disorders Somnolence and sedation 16 8 Dizziness 12 7 Fatigue 9 4 Cerebellar coordination and balance disturbances Cerebellar coordination and balance disturbances includes ataxia, balance disorder, coordination abnormal, and nystagmus. 3 1 Psychiatric disorders Irritability 3 1 There was no apparent dose-dependent increase in adverse reactions listed in Table 4 with the exception of somnolence and sedation. Pediatric Patients Safety of brivaracetam was evaluated in two open-label, safety and pharmacokinetic trials in pediatric patients 2 months to less than 16 years of age. Across studies of pediatric patients with partial onset seizures, 186 patients received brivaracetam oral solution or tablet, of whom 123 received brivara …

7 DRUG INTERACTIONS Rifampin: Because of decreased concentrations, increasing brivaracetam oral solution dosage in patients on concomitant rifampin is recommended. ( 2.6 , 7.1 ) Carbamazepine: Because of increased exposure to carbamazepine metabolite, if tolerability issues arise, consider reducing carbamazepine dosage in patients on concomitant brivaracetam oral solution. ( 7.2 ) Phenytoin: Because phenytoin concentrations can increase, phenytoin levels should be monitored in patients on concomitant brivaracetam oral solution. ( 7.3 ) Levetiracetam:B rivaracetam oral solution had no added therapeutic benefit when co-administered with levetiracetam. ( 7.4 ) 7.1 Rifampin Co-administration with rifampin decreases brivatacetum plasma concentrations likely because of CYP2C19 induction [see Clinical Pharmacology (12.3) ] . Prescribers should increase the brivatacetum dose by up to 100% (i.e., double the dosage) in patients while receiving concomitant treatment with rifampin [see Dosage and Administration (2.6) ] . 7.2 Carbamazepine Co-administration with carbamazepine may increase exposure to carbamazepine-epoxide, the active metabolite of carbamazepine. Though available data did not reveal any safety concerns, if tolerability issues arise when co-administered, carbamazepine dose reduction should be considered [see Clinical Pharmacology (12.3) ] . 7.3 Phenytoin Because brivatacetum can increase plasma concentrations of phenytoin, phenytoin levels should be monitored in patients when concomitant brivatacetum is added to or discontinued from ongoing phenytoin therapy [see Clinical Pharmacology (12.3) ] . 7.4 Levetiracetam Brivatacetum provided no added therapeutic benefit to levetiracetam when the two drugs were co-administered [see Clinical Studies (14) ].

8 USE IN SPECIFIC POPULATIONS Pregnancy: Based on animal data, may cause fetal harm. (8.1) 8.1 Pregnancy Pregnancy Exposure Registry There is a pregnancy exposure registry that monitors pregnancy outcomes in women exposed to antiepileptic drugs (AEDs), such as brivaracetam, during pregnancy. Encourage patients who are taking brivaracetam during pregnancy to enroll in the North American Antiepileptic Drug (NAAED) Pregnancy Registry by calling the toll free number 1-888-233-2334 or visiting http://www.aedpregnancyregistry.org/. Risk Summary Available data from the North American Antiepileptic Drug (NAAED) pregnancy registry, a prospective cohort study, case reports, and a case series are insufficient to identify a risk of major birth defects, miscarriage or other maternal or fetal outcomes associated with brivaracetam use during pregnancy. In animal studies, brivaracetam produced evidence of developmental toxicity (increased embryofetal mortality and decreased fetal body weights in rabbits; decreased growth, delayed sexual maturation, and long-term neurobehavioral changes in rat offspring) at maternal plasma exposures greater than clinical 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 2-4% and 15-20%, respectively. Data Animal Data Oral administration of brivaracetam (0, 150, 300, or 600 mg/kg/day) to pregnant rats during the period of organogenesis did not produce any significant maternal or embryofetal toxicity. The highest dose tested was associated with maternal plasma exposures (AUC) approximately 30 times exposures in humans at the maximum recommended dose (MRD) of 200 mg/day. Oral administration of brivaracetam (0, 30, 60, 120, or 240 mg/kg/day) to pregnant rabbits during the period of organogenesis resulted in embryofetal mortality and decreased fetal body weights at the highest dose tested, which was also maternally toxic. The highest no-effect dose (120 mg/kg/day) was associated with maternal plasma exposures approximately 4 times human exposures at the MRD. When brivaracetam (0, 150, 300, or 600 mg/kg/day) was orally administered to rats throughout pregnancy and lactation, decreased growth, delayed sexual maturation (female), and long-term neurobehavioral changes were observed in the offspring at the highest dose. The highest no-effect dose (300 mg/kg/day) was associated with maternal plasma exposures approximately 7 times human exposures at the MRD. Brivaracetam was shown to readily cross the placenta in pregnant rats after a single oral (5 mg/kg) dose of 14 C-brivaracetam. From 1 hour post dose, radioactivity levels in fetuses, amniotic fluid, and placenta were similar to those measured in maternal blood. 8.2 Lactation Risk Summary Data from published literature indicate that brivaracetam is present in human milk. There is insufficient information on the effects of brivaracetam on the breastfed infant or on milk production. The developmental and health benefits of breastfeeding should be considered along with the mother’s clinical need for brivaracetam and any potential adverse effects on the breastfed infant from brivaracetam or from the underlying maternal condition. 8.4 Pediatric Use Safety and effectiveness of brivaracetam oral solution have been established in pediatric patients 1 month to less than 16 years of age. Use of brivaracetam in these age groups is supported by evidence from adequate and well-controlled studies of brivaracetam in adults with partial-onset seizures, pharmacokinetic data from adult and pediatric patients, and safety data in pediatric patients 2 months to less than 16 years of age [see Dosage and Administration (2.1) , Warnings and Precautions (5.3) , Adverse Reactions (6.1) , Clinical …

12.1 Mechanism of Action The precise mechanism by which brivatacetum exerts its anticonvulsant activity is not known. Brivaracetam displays a high and selective affinity for synaptic vesicle protein 2A (SV2A) in the brain, which may contribute to the anticonvulsant effect.

11 DESCRIPTION The chemical name of brivaracetam is (2S)-2-[(4R)-2-oxo-4-propyltetrahydro-1H-pyrrol-1-yl] butanamide. Its molecular formula is C 11 H 20 N 2 O 2 and its molecular weight is 212.29. The chemical structure is: Brivaracetam is a white to off-white crystalline powder. It is freely soluble in water, in ethanol, in methanol, in glacial acetic acid, in acetonitrile and in acetone. It is soluble in toluene. Oral Solution Brivaracetam oral solution contains 10 mg of brivaracetam per mL. The inactive ingredients are sodium citrate (trisodium citrate dihydrate), anhydrous citric acid, methylparaben, sodium carboxymethylcellulose, sucralose, non-crystallizing sorbitol solution, anhydrous glycerol, raspberry flavor, and purified water. Raspberry flavor also contains maltodextrin, propylene glycol and modified waxy maize starch. Image

10 OVERDOSAGE There is limited clinical experience with brivaracetam overdose in humans. Somnolence and dizziness were reported in a patient taking a single dose of 1400 mg (14 times the highest recommended single dose) of brivaracetam. The following adverse reactions were reported with brivaracetam overdose: vertigo, balance disorder, fatigue, nausea, diplopia, anxiety, and bradycardia. In general, the adverse reactions associated with brivaracetam overdose were consistent with the known adverse reactions. There is no specific antidote for overdose with brivaracetam. In the event of overdose, standard medical practice for the management of any overdose should be used. An adequate airway, oxygenation, and ventilation should be ensured; monitoring of cardiac rate and rhythm and vital signs is recommended. A certified poison control center should be contacted for updated information on the management of overdose with brivaracetam. There are no data on the removal of brivaracetam using hemodialysis, but because less than 10% of brivaracetam is excreted in urine, hemodialysis is not expected to enhance brivaracetam clearance.

16 HOW SUPPLIED/STORAGE AND HANDLING 16.1 How Supplied Brivaracetam Oral Solution 10 mg/mL is a slightly viscous, clear, colorless to yellowish, raspberry-flavored liquid. It is supplied in amber glass bottles: 300 mL bottles NDC 70748-411-01 16.2 Storage and Handling Store at 25°C (77°F); excursions permitted between 15°C to 30°C (59°F to 86°F). See USP Controlled Room Temperature. Do not freeze brivaracetam oral solution. Discard any unused brivaracetam oral solution remaining after 5 months of first opening the bottle.

16.1 How Supplied Brivaracetam Oral Solution 10 mg/mL is a slightly viscous, clear, colorless to yellowish, raspberry-flavored liquid. It is supplied in amber glass bottles: 300 mL bottles NDC 70748-411-01