levetiracetam 100 mg/mL Injection, Solution, Concentrate
🆔 Identity & classification
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🏷️ RxNorm drug class
This medicine belongs to the Other antiepileptics class.
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🏭 Manufacturer & labeler
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🩺 Clinical
- Levetiracetam is an anti-seizure medicine. Depending on the product and your age, it can be used to treat partial-onset seizures (seizures starting in one part of the brain), myocl...
- What is levetiracetam actually used for?
- It can, especially when you first start taking it. Drowsiness, fatigue, and dizziness are among the most common side effects and tend to be most noticeable in the first few weeks....
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Supplement & herbal interactions
Some supplements/herbs that may interact with Levetiracetam — tap one for details:
Levetiracetam may be associated with lower levels of 1 nutrient — worth a chat with your pharmacist, not a cause for alarm.
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🧪 Inactive Ingredients / Excipients
Inactive ingredients, also called excipients, are components of the drug product other than the active ingredient. They may include fillers, dyes, coatings, preservatives, flavors, or other formulation ingredients.
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UNII Q40Q9N063P
Acetic acid is a weak organic acid commonly used in medicines as a buffer and pH adjuster. It helps maintain the proper acidity level to ensure the drug remains stable and effective in its formulation.
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UNII 4550K0SC9B
Sodium acetate is a salt derived from acetic acid. It acts as a buffer to help maintain the medicine's pH stability and may serve as a preservative or solubilizer in liquid formulations.
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UNII 451W47IQ8X
Sodium chloride is common table salt. It's used in medicines as a buffer to maintain proper pH, as a filler to add bulk, or to adjust the osmotic balance in liquid formulations.
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UNII 059QF0KO0R
Water is a liquid solvent that dissolves and mixes ingredients together in liquid medicines, syrups, and injections. It helps distribute the active drug evenly throughout the product.
4 inactive ingredients listed in the exact product block matched to this NDC.
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ingredient classCode="IACT" elements from the exact product block matched by this NDC. Label-section narrative from DailyMed / the openFDA label index is shown separately when available.Inactive ingredient FAQ
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💲 Pricing
A drug doesn't have one price. Each row is a different public payment system, and none is what you'd pay at the counter — that depends on your insurance. The ⓘ on each row explains what it measures.
| Price system | Per mL | Per package |
|---|---|---|
| Retail pharmacies payNADAC · weekly | Not in the retail survey — common for institutional, discontinued, or low-volume packs. | |
| Medicaid paysCMS SDUD · 12 mo | $2.37 | $118.49 / 50 ml |
| Medicare drug plans payPart D · quarterly | No Part D plan price is available for this NDC in our data. | |
| Medicare Part B allowsASP · J1953 | $0.032 / J1953 unit | — |
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🧾 Billing & reimbursement
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🔁 Therapeutic equivalents
| Product | Labeler | Pack | NADAC/unit | TE | Status | Price vs. this |
|---|---|---|---|---|---|---|
| Levetiracetam 100 mg/mL 00143-9574-10 | Hikma | 10 vials | — | AP | FDA listed | — |
| Levetiracetam 100 mg/mL 00143-9673-10 | Hikma | 10 vials | — | AP | FDA listed | — |
| Levetiracetam 100 mg/mL 00409-1886-02 | Hospira, | 25 vials | — | AP | FDA listed | — |
| Levetiracetam 100 mg/mL 00409-2011-25 | Hospira, | 25 vials | — | AP | FDA listed | — |
| Levetiracetam 500 mg/5mL 25021-0780-05 | Sagent | 10 vials | — | AP | Discontinued | — |
| Levetiracetam 100 mg/mL 42571-0331-92 | Micro | 10 vials | — | AP | FDA listed | — |
| Levetiracetam 500 mg/5mL 43547-0454-10 | Solco | 10 vials | — | AP | FDA listed | — |
| Keppra 100 mg/mL 50474-0002-63 | UCB, | 10 vials | — | AP | FDA listed | — |
| Levetiracetam 100 mg/mL 51224-0013-10 | TAGI | 10 vials | — | AP | Discontinued | — |
| Levetiracetam 500 mg/5mL 55150-0177-05 | Eugia | 10 vials | — | AP | FDA listed | — |
| Levetiracetam 500 mg/5mL 58657-0860-01 | Method | 1 vial | — | AP | FDA listed | — |
| Levetiracetam 100 mg/mL 63323-0400-05 | Fresenius | 10 vials | — | AP | FDA listed | — |
| levetiracetam 100 mg/mLthis 67457-0790-05 | Mylan | 10 vials | — | AP | FDA listed | — |
| Levetiracetam 100 mg/mL 68094-0313-10 | Precision | 10 vials | — | AP | FDA listed | — |
| Levetiracetam 500 mg/5mL 72162-2638-02 | Bryant | 10 vials | — | AP | FDA listed | — |
| Levetiracetam 500 mg/5mL 72205-0120-07 | Novadoz | 10 vials | — | AP | FDA listed | — |
| Levetiracetam 100 mg/mL 72485-0106-10 | Armas | 10 vials | — | AP | FDA listed | — |
| Levetiracetam 100 mg/mL 72572-0360-25 | Civica, | 25 vials | — | AP | FDA listed | — |
| Levetiracetam 500 mg/5mL 85957-0037-02 | Aryeh | 10 vials | — | AP | FDA listed | — |
| Levetiracetam 100 mg/mL 36000-0265-05 | Baxter | 5 vials | — | AP | FDA listed | — |
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⏳ Availability & generic status
This product is an FDA-approved generic. Other versions of the same drug are listed under Therapeutic equivalents, least expensive first.
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🗺️ Medicaid utilization & spend
📊 Medicare Part D spend CMS · PART D · 2026 (Q1)
🔬 Reported adverse events (FAERS)
Top reported reactions
Reporter sex
Serious outcomes
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📦 Packaging — all sizes for this product
| Package NDC | Description | Marketing start | Status |
|---|---|---|---|
| 67457-0790-05 You're viewing this | 10 VIAL, SINGLE-DOSE in 1 CARTON (67457-790-05) / 5 mL in 1 VIAL, SINGLE-DOSE (67457-790-00) | 2017-07-24 | Active |
🧭 About this NDC listing & data coverage
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| NDC identity (package / product / labeler codes) | ✓ Available |
| Labeler | ✓ Available |
| Product & package description | ✓ Available |
| Marketing category & status | ✓ Available |
| Active ingredient / dosage form / route | ✓ Available |
| FDA label (SPL via DailyMed) | ✓ Available |
| Package photos | — Not published for this NDC No photo available yet for this listing. |
| Inactive ingredients (structured) | ✓ Available |
| NADAC pharmacy acquisition price (CMS) | — Not published for this NDC CMS publishes NADAC only for NDCs reported in its retail-pharmacy survey. |
| Orange Book / therapeutic-equivalence data | ✓ Available |
| HCPCS J-code billing crosswalk | ✓ Available |
| Medicaid utilization (CMS SDUD) | ✓ Available |
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📄 Full prescribing information FDA SPL
🎯 Indications and Usage ▾
1 INDICATIONS AND USAGE • Levetiracetam injection is indicated for the treatment of partial-onset seizures in patients 1 month of age and older ( 1.1 ) • Levetiracetam injection is indicated for adjunctive therapy for the treatment of: o Myoclonic seizures in patients 12 years of age and older with juvenile myoclonic epilepsy ( 1.2 ) o Primary generalized tonic-clonic seizures in patients 6 years of age and older with idiopathic generalized epilepsy ( 1.3 ) • Levetiracetam injection is for intravenous use only as an alternative for patients when oral administration is temporarily not feasible ( 1.4 )
1.1Partial-Onset Seizures Levetiracetam injection is indicated for the treatment of partial-onset seizures in patients 1 month of age and older.
1.2Myoclonic Seizures in Patients with Juvenile Myoclonic Epilepsy Levetiracetam injection is indicated as adjunctive therapy for the treatment of myoclonic seizures in patients 12 years of age and older with juvenile myoclonic epilepsy.
1.3Primary Generalized Tonic-Clonic Seizures Levetiracetam injection is indicated as adjunctive therapy for the treatment of primary generalized tonic-clonic seizures in patients 6 years of age and older with idiopathic generalized epilepsy.
1.4Limitations of Use Levetiracetam injection is for intravenous use only as an alternative for patients when oral administration is temporarily not feasible.
⏱️ Dosage and Administration ▾
2 DOSAGE AND ADMINISTRATION Levetiracetam injection is for intravenous use only ( 2.1 ) Partial-Onset Seizures (monotherapy or adjunctive therapy) • 1 Month to < 6 Months: 7 mg/kg twice daily; increase by 7 mg/kg twice daily every 2 weeks to recommended dose of 21 mg/kg twice daily ( 2.1 ) • 6 Months to < 4 Years: 10 mg/kg twice daily; increase by 10 mg/kg twice daily every 2 weeks to recommended dose of 25 mg/kg twice daily ( 2.1 ) • 4 Years to < 16 Years: 10 mg/kg twice daily; increase by 10 mg/kg twice daily every 2 weeks to recommended dose of 30 mg/kg twice daily ( 2.1 ) • Adults 16 Years and Older: 500 mg twice daily; increase by 500 mg twice daily every 2 weeks to a recommended dose of 1500 mg twice daily ( 2.1 ) Myoclonic Seizures in Adults and Pediatric Patients 12 Years and Older • 500 mg twice daily; increase by 500 mg twice daily every 2 weeks to recommended dose of 1500 mg twice daily ( 2.2 ) Primary Generalized Tonic-Clonic Seizures • 6 Years to < 16 Years: 10 mg/kg twice daily; increase by 10 mg/kg twice daily every 2 weeks to recommended dose of 30 mg/kg twice daily ( 2.3 ) • Adults 16 Years and Older: 500 mg twice daily; increase by 500 mg twice daily every 2 weeks to recommended dose of 1500 mg twice daily ( 2.3 ) Switching From or To Oral Levetiracetam When switching from or to oral levetiracetam, the total daily dosage/frequency of levetiracetam injection should be equivalent to those of oral levetiracetam ( 2.4 , 2.5 ) See full prescribing information for preparation and administration instructions ( 2.6 ) and dosage adjustment in adults with renal impairment ( 2.7 )
2.1Dosing for Partial-Onset Seizures The recommended dosing for monotherapy and adjunctive therapy is the same as outlined below. There is no clinical study experience with administration of intravenous levetiracetam for a period longer than 4 days. Adults 16 Years of Age and Older Initiate treatment with a daily dose of 1000 mg/day, given as twice-daily dosing (500 mg twice daily).
Additional dosing increments may be given (1000 mg/day additional every 2 weeks) to a maximum recommended daily dose of 3000 mg. There is no evidence that doses greater than 3000 mg/day confer additional benefit. Pediatric Patients 1 Month to < 6 Months Initiate treatment with a daily dose of 14 mg/kg in 2 divided doses (7 mg/kg twice daily).
Increase the daily dose every 2 weeks by increments of 14 mg/kg to the recommended daily dose of 42 mg/kg (21 mg/kg twice daily). In the clinical trial, the mean daily dose was 35 mg/kg in this age group. 6 Months to < 4 Years Initiate treatment with a daily dose of 20 mg/kg in 2 divided doses (10 mg/kg twice daily).
Increase the daily dose in 2 weeks by an increment of 20 mg/kg to the recommended daily dose of 50 mg/kg (25 mg/kg twice daily). If a patient cannot tolerate a daily dose of 50 mg/kg, the daily dose may be reduced. In the clinical trial, the mean daily dose was 47 mg/kg in this age group.
4 Years to < 16 Years Initiate treatment with a daily dose of 20 mg/kg in 2 divided doses (10 mg/kg twice daily). Increase the daily dose every 2 weeks by increments of 20 mg/kg to the recommended daily dose of 60 mg/kg (30 mg/kg twice daily). If a patient cannot tolerate a daily dose of 60 mg/kg, the daily dose may be reduced.
In the clinical trial, the mean daily dose was 44 mg/kg. The maximum daily dose was 3000 mg/day.
2.2Dosing for Myoclonic Seizures in Patients with Juvenile Myoclonic Epilepsy Initiate treatment with a dose of 1000 mg/day, given as twice-daily dosing (500 mg twice daily). Increase the dosage by 1000 mg/day every 2 weeks to the recommended daily dose of 3000 mg. The effectiveness of doses lower than 3000 mg/day has not been studied.
2.3Dosing for Primary Generalized Tonic-Clonic Seizures Adults 16 Years of Age and Older Initiate treatment with a dose of 1000 mg/day, given as twice-daily dosing (500 mg twice daily). Increase dosage by 1000 mg/day every 2 weeks to the recommended daily dose of 3000 mg. The…
💊 Dosage Forms and Strengths ▾
3 DOSAGE FORMS AND STRENGTHS One vial of levetiracetam injection, USP contains 500 mg levetiracetam, USP (500 mg/5 mL) as a clear, colorless solution. Injection: 500 mg/5 mL single-dose vial ( 3 )
⛔ Contraindications ▾
4 CONTRAINDICATIONS Levetiracetam injection is contraindicated in patients with a hypersensitivity to levetiracetam. Reactions have included anaphylaxis and angioedema [see Warnings and Precautions (5.3) ]. Known hypersensitivity to levetiracetam; angioedema and anaphylaxis have occurred ( 4 , 5.3 )
⚠️ Warnings and Cautions ▾
5 WARNINGS AND PRECAUTIONS • Behavioral abnormalities including psychotic symptoms, suicidal ideation, irritability, and aggressive behavior have been observed; monitor patients for psychiatric signs and symptoms ( 5.1 ) • Monitor for somnolence and fatigue; advise patients not to drive or operate machinery until they have sufficient experience on levetiracetam ( 5.2 ) • Serious Dermatological Reactions: Discontinue levetiracetam at the first sign of rash unless clearly not drug related ( 5.4 ) • Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS)/Multiorgan Hypersensitivity: Discontinue if no alternative etiology ( 5.5 ) • Coordination Difficulties: Monitor for ataxia, abnormal gait, and incoordination.
( 5.6 ) • Withdrawal Seizures: Levetiracetam must be gradually withdrawn ( 5.7 )
5.1Behavioral Abnormalities and Psychotic Symptoms Levetiracetam may cause behavioral abnormalities and psychotic symptoms. Patients treated with levetiracetam should be monitored for psychiatric signs and symptoms. Behavioral abnormalities In clinical studies using an oral formulation of levetiracetam, 13% of adult levetiracetam-treated patients and 38% of pediatric levetiracetam-treated patients (4 to 16 years of age), compared to 6% and 19% of adult and pediatric placebo-treated patients, experienced non-psychotic behavioral symptoms (reported as aggression, agitation, anger, anxiety, apathy, depersonalization, depression, emotional lability, hostility, hyperkinesias, irritability, nervousness, neurosis, and personality disorder).
A randomized, double-blind, placebo-controlled study was performed to assess the neurocognitive and behavioral effects of an oral formulation of levetiracetam as adjunctive therapy in pediatric patients (4 to 16 years of age). The results from an exploratory analysis indicated a worsening in levetiracetam-treated patients on aggressive behavior (one of eight behavior dimensions), as measured in a standardized and systematic way using a validated instrument, the Achenbach Child Behavior Checklist (CBCL/6-18). In clinical studies in pediatric patients 1 month to < 4 years of age, irritability was reported in 12% of the levetiracetam-treated patients compared to 0% of placebo-treated patients.
In clinical studies, 1.7% of adult levetiracetam-treated patients discontinued treatment due to behavioral adverse reactions, compared to 0.2% of placebo-treated patients. The treatment dose was reduced in 0.8% of adult levetiracetam-treated patients and in 0.5% of placebo-treated patients. Overall, 11% of levetiracetam-treated pediatric patients experienced behavioral symptoms associated with discontinuation or dose reduction, compared to 6% of placebo-treated patients.
Psychotic symptoms In clinical studies using an oral formulation of levetiracetam, 1% of levetiracetam-treated adult patients, 2% of levetiracetam-treated pediatric patients 4 to 16 years of age, and 17% of levetiracetam-treated pediatric patients 1 month to <4 years of age experienced psychotic symptoms, compared to 0.2%, 2%, and 5% in the corresponding age groups treated with placebo. In a controlled study that assessed the neurocognitive and behavioral effects of an oral formulation of levetiracetam in pediatric patients 4 to 16 years of age, 1.6% of levetiracetam-treated patients experienced paranoia, compared to 0% of placebo-treated patients.
In the same study, 3.1% of levetiracetam-treated patients experienced confusional state, compared to 0% of placebo-treated patients [see Use in Specific Populations (8.4 )]. In clinical studies, two (0.3%) levetiracetam-treated adult patients were hospitalized, and their treatment was discontinued due to psychosis. Both events, reported as psychosis, developed within the first week of treatment and resolved within 1 to 2 weeks following treatment discontinuation.
There was no difference between drug- and placebo-treated patients in the incidence of the pediatric patients who discontinued treatment due to psych…
🤒 Adverse Reactions ▾
6 ADVERSE REACTIONS The following adverse reactions are discussed in more details in other sections of labeling: • Behavioral Abnormalities and Psychotic Symptoms [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) ] • Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS)/Multiorgan Hypersensitivity [see Warnings and Precautions (5.5) ] • Coordination Difficulties [see Warnings and Precautions (5.6) ] • Hematologic Abnormalities [see Warnings and Precautions (5.8) ] • Increase in Blood Pressure [see Warnings and Precautions (5.9) ] Most common adverse reactions (incidence ≥ 5% more than placebo) include: • Adults: somnolence, asthenia, infection, and dizziness ( 6.1 ) • Pediatric patients: fatigue, aggression, nasal congestion, decreased appetite, and irritability ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Mylan at 1-877-446-3679 (1-877-4-INFO-RX) or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.
6.1Clinical 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 C max , C min , and total systemic exposure to levetiracetam when the IV levetiracetam is administered as a 15-minute infusion.
Partial-Onset Seizures Adults 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 3 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. Table 3: Adverse Reactions Adverse reactions occurred in at least 1% of levetiracetam-treated patients and occurred more frequently than placebo-treated patients in Pooled Placebo-Controlled, Adjunctive Studies in Adults Experiencing Partial-Onset Seizures Levetiracetam (N=769) % Placebo (N=439) % Asthenia 15 9 Somnolence 15 8 Headache 14 13 Infection 13 8 Dizziness 9 4 Pain 7 6 Pharyngitis 6 4 Depression 4 2 Nervousness 4 2 Rhinitis 4 3 Anorexia 3 2 Ataxia 3 1 Vertigo 3 1 Amnesia 2 1 Anxiety 2 1 Cough Increased 2 1 Diplopia 2 1 Emotional Lability 2 0 Hostility 2 1 Paresthesia 2 1 Sinusitis 2 1 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 4 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 4: Adverse Reactions that Resulted in Discontinuation or Dose Reduction in Pooled Placebo-Controlled Studies in Adults Experiencing Partial-Onset Seizures Adverse Reaction Levetiracetam (N=769) % Placebo (N=439) % Somnolence 4 2 Dizziness 1 0 Pediatric Patients 4 Years to <16 Years The adverse reaction data presented bel…
🔄 Drug Interactions ▾
Drug Interactions In vitro data on metabolic interactions indicate that levetiracetam is unlikely to produce, or be subject to, pharmacokinetic interactions. Levetiracetam and its major metabolite, at concentrations well above C max levels achieved within the therapeutic dose range, are neither inhibitors of, nor high affinity substrates for, human liver cytochrome P450 isoforms, epoxide hydrolase or UDP-glucuronidation enzymes. In addition, levetiracetam does not affect the in vitro glucuronidation of valproic acid.
Potential pharmacokinetic interactions of or with levetiracetam were assessed in clinical pharmacokinetic studies (phenytoin, valproate, warfarin, digoxin, oral contraceptive, probenecid) and through pharmacokinetic screening in the placebo-controlled clinical studies in epilepsy patients. Phenytoin Levetiracetam (3000 mg daily) had no effect on the pharmacokinetic disposition of phenytoin in patients with refractory epilepsy. Pharmacokinetics of levetiracetam were also not affected by phenytoin.
Valproate Levetiracetam (1500 mg twice daily) did not alter the pharmacokinetics of valproate in healthy volunteers. Valproate 500 mg twice daily did not modify the rate or extent of levetiracetam absorption or its plasma clearance or urinary excretion. There also was no effect on exposure to and the excretion of the primary metabolite, ucb L057.
Other Antiepileptic Drugs Potential drug interactions between levetiracetam and other AEDs (carbamazepine, gabapentin, lamotrigine, phenobarbital, phenytoin, primidone and valproate) were also assessed by evaluating the serum concentrations of levetiracetam and these AEDs during placebo-controlled clinical studies. These data indicate that levetiracetam does not influence the plasma concentration of other AEDs and that these AEDs do not influence the pharmacokinetics of levetiracetam. Effect of AEDs in Pediatric Patients There was about a 22% increase of apparent total body clearance of levetiracetam when it was co-administered with enzyme-inducing AEDs.
Dose adjustment is not recommended. Levetiracetam had no effect on plasma concentrations of carbamazepine, valproate, topiramate, or lamotrigine. Oral Contraceptives Levetiracetam (500 mg twice daily) did not influence the pharmacokinetics of an oral contraceptive containing 0.03 mg ethinyl estradiol and 0.15 mg levonorgestrel, or of the luteinizing hormone and progesterone levels, indicating that impairment of contraceptive efficacy is unlikely.
Coadministration of this oral contraceptive did not influence the pharmacokinetics of levetiracetam. Digoxin Levetiracetam (1000 mg twice daily) did not influence the pharmacokinetics and pharmacodynamics (ECG) of digoxin given as a 0.25 mg dose every day. Coadministration of digoxin did not influence the pharmacokinetics of levetiracetam.
Warfarin Levetiracetam (1000 mg twice daily) did not influence the pharmacokinetics of R and S warfarin. Prothrombin time was not affected by levetiracetam. Coadministration of warfarin did not affect the pharmacokinetics of levetiracetam.
Probenecid Probenecid, a renal tubular secretion blocking agent, administered at a dose of 500 mg four times a day, did not change the pharmacokinetics of levetiracetam 1000 mg twice daily. C ss max of the metabolite, ucb L057, was approximately doubled in the presence of probenecid while the fraction of drug excreted unchanged in the urine remained the same. Renal clearance of ucb L057 in the presence of probenecid decreased 60%, probably related to competitive inhibition of tubular secretion of ucb L057.
The effect of levetiracetam on probenecid was not studied.
👥 Use in Specific Populations ▾
8 USE IN SPECIFIC POPULATIONS • Pregnancy: Plasma levels of levetiracetam may be decreased; monitor closely during pregnancy. Based on animal data, may cause fetal harm ( 5.10 , 8.1 )
8.1Pregnancy Pregnancy Exposure Registry There is a pregnancy exposure registry that monitors pregnancy outcomes in women exposed to antiepileptic drugs (AEDs), including levetiracetam, during pregnancy. Encourage women who are taking levetiracetam during pregnancy to enroll in the North American Antiepileptic Drug (NAAED) pregnancy registry by calling 1-888-233-2334 or visiting http://www.aedpregnancyregistry.org/ . Risk Summary Prolonged experience with levetiracetam in pregnant women has not identified a drug-associated risk of major birth defects or miscarriage, based on published literature, which includes data from pregnancy registries, and reflects experience over two decades [see Human Data ] .
In animal studies, levetiracetam produced developmental toxicity (increased embryofetal and offspring mortality, increased incidences of fetal structural abnormalities, decreased embryofetal and offspring growth, neurobehavioral alterations in offspring) at doses similar to human therapeutic doses [see Animal Data ] . 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. The background risk of major birth defects and miscarriage for the indicated population is unknown.
Clinical Considerations Levetiracetam blood levels may decrease during pregnancy [see Warnings and Precautions (5.10) ] . Physiological changes during pregnancy may affect levetiracetam concentration. Decrease in levetiracetam plasma concentrations has been observed during pregnancy.
This decrease is more pronounced during the third trimester. Dose adjustments may be necessary to maintain clinical response. Data Human Data While available studies cannot definitively establish the absence of risk, data from the published literature and pregnancy registries have not established an association with levetiracetam use during pregnancy and major birth defects or miscarriage.
Animal Data When levetiracetam (0, 400, 1200, or 3600 mg/kg/day) was administered orally to pregnant rats during the period of organogenesis, reduced fetal weights and increased incidence of fetal skeletal variations were observed at the highest dose tested. There was no evidence of maternal toxicity. The no-effect dose for adverse effects on embryofetal developmental in rats (1200 mg/kg/day) is approximately 4 times the maximum recommended human dose (MRHD) of 3000 mg on a body surface area (mg/m 2 ) basis.
Oral administration of levetiracetam (0, 200, 600, or 1800 mg/kg/day) to pregnant rabbits during the period of organogenesis resulted in increased embryofetal mortality and incidence of fetal skeletal variations at the mid and high dose and decreased fetal weights and increased incidence of fetal malformations at the high dose, which was associated with maternal toxicity. The no-effect dose for adverse effects on embryofetal development in rabbits (200 mg/kg/day) is approximately equivalent to the MRHD on a mg/m 2 basis.
Oral administration of levetiracetam (0, 70, 350, or 1800 mg/kg/day) to female rats throughout pregnancy and lactation led to an increased incidence of fetal skeletal variations, reduced fetal body weight, and decreased growth in offspring at the mid and high doses and increased pup mortality and neurobehavioral alterations in offspring at the highest dose tested. There was no evidence of maternal toxicity. The no-effect dose for adverse effects on pre- and postnatal development in rats (70 mg/kg/day) is less than the MRHD on a mg/m 2 basis.
Oral administration of levetiracetam to rats during the latter part of gestation and throughout lactation produced no adverse developmental or maternal effects at doses of up to 1800 mg/kg/day (6 times the MRHD on a mg/m 2 basis).
8.2 Lac…
🤰 Pregnancy ▾
8.1Pregnancy Pregnancy Exposure Registry There is a pregnancy exposure registry that monitors pregnancy outcomes in women exposed to antiepileptic drugs (AEDs), including levetiracetam, during pregnancy. Encourage women who are taking levetiracetam during pregnancy to enroll in the North American Antiepileptic Drug (NAAED) pregnancy registry by calling 1-888-233-2334 or visiting http://www.aedpregnancyregistry.org/ . Risk Summary Prolonged experience with levetiracetam in pregnant women has not identified a drug-associated risk of major birth defects or miscarriage, based on published literature, which includes data from pregnancy registries, and reflects experience over two decades [see Human Data ] .
In animal studies, levetiracetam produced developmental toxicity (increased embryofetal and offspring mortality, increased incidences of fetal structural abnormalities, decreased embryofetal and offspring growth, neurobehavioral alterations in offspring) at doses similar to human therapeutic doses [see Animal Data ] . 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. The background risk of major birth defects and miscarriage for the indicated population is unknown.
Clinical Considerations Levetiracetam blood levels may decrease during pregnancy [see Warnings and Precautions (5.10) ] . Physiological changes during pregnancy may affect levetiracetam concentration. Decrease in levetiracetam plasma concentrations has been observed during pregnancy.
This decrease is more pronounced during the third trimester. Dose adjustments may be necessary to maintain clinical response. Data Human Data While available studies cannot definitively establish the absence of risk, data from the published literature and pregnancy registries have not established an association with levetiracetam use during pregnancy and major birth defects or miscarriage.
Animal Data When levetiracetam (0, 400, 1200, or 3600 mg/kg/day) was administered orally to pregnant rats during the period of organogenesis, reduced fetal weights and increased incidence of fetal skeletal variations were observed at the highest dose tested. There was no evidence of maternal toxicity. The no-effect dose for adverse effects on embryofetal developmental in rats (1200 mg/kg/day) is approximately 4 times the maximum recommended human dose (MRHD) of 3000 mg on a body surface area (mg/m 2 ) basis.
Oral administration of levetiracetam (0, 200, 600, or 1800 mg/kg/day) to pregnant rabbits during the period of organogenesis resulted in increased embryofetal mortality and incidence of fetal skeletal variations at the mid and high dose and decreased fetal weights and increased incidence of fetal malformations at the high dose, which was associated with maternal toxicity. The no-effect dose for adverse effects on embryofetal development in rabbits (200 mg/kg/day) is approximately equivalent to the MRHD on a mg/m 2 basis.
Oral administration of levetiracetam (0, 70, 350, or 1800 mg/kg/day) to female rats throughout pregnancy and lactation led to an increased incidence of fetal skeletal variations, reduced fetal body weight, and decreased growth in offspring at the mid and high doses and increased pup mortality and neurobehavioral alterations in offspring at the highest dose tested. There was no evidence of maternal toxicity. The no-effect dose for adverse effects on pre- and postnatal development in rats (70 mg/kg/day) is less than the MRHD on a mg/m 2 basis.
Oral administration of levetiracetam to rats during the latter part of gestation and throughout lactation produced no adverse developmental or maternal effects at doses of up to 1800 mg/kg/day (6 times the MRHD on a mg/m 2 basis).
Pregnancy Levetiracetam levels may decrease during pregnancy [see Warnings and Precautions (5.10 ) and Use in Specific Populations (8.1) ].
🧒 Pediatric Use ▾
8.4Pediatric Use The safety and effectiveness of levetiracetam for the treatment of partial-onset seizures in patients 1 month to 16 years of age have been established [see Clinical Pharmacology (12.3) and Clinical Studies (14.1) ] . The dosing recommendation in these pediatric patients varies according to age group and is weight-based [see Dosage and Administration (2.6) ]. The safety and effectiveness of levetiracetam as adjunctive therapy for the treatment of myoclonic seizures in adolescents 12 years of age and older with juvenile myoclonic epilepsy have been established [see Clinical Studies (14.2) ].
The safety and effectiveness of levetiracetam as adjunctive therapy for the treatment of primary generalized tonic-clonic seizures in pediatric patients 6 years of age and older with idiopathic generalized epilepsy have been established [see Clinical Studies (14.3) ]. Safety and effectiveness for the treatment of partial-onset seizures in pediatric patients below the age of 1 month; adjunctive therapy for the treatment of myoclonic seizures in pediatric patients below the age of 12 years; and adjunctive therapy for the treatment of primary generalized tonic-clonic seizures in pediatric patients below the age of 6 years have not been established.
A 3-month, randomized, double-blind, placebo-controlled study was performed to assess the neurocognitive and behavioral effects of levetiracetam as adjunctive therapy in 98 (levetiracetam N=64, placebo N=34) pediatric patients, ages 4 years to 16 years, with partial seizures that were inadequately controlled. The target dose was 60 mg/kg/day. Neurocognitive effects were measured by the Leiter-R Attention and Memory (AM) Battery, which measures various aspects of a child’s memory and attention.
Although no substantive differences were observed between the placebo and drug treated groups in the median change from baseline in this battery, the study was not adequate to assess formal statistical non-inferiority of the drug and placebo. The Achenbach Child Behavior Checklist (CBCL/6-18), a standardized validated tool used to assess a child’s competencies and behavioral/emotional problems, was also assessed in this study. An analysis of the CBCL/6-18 indicated, on average, a worsening in levetiracetam-treated patients in aggressive behavior, one of the eight syndrome scores [see Warnings and Precautions (5.1) ].
Juvenile Animal Toxicity Data Studies of levetiracetam in juvenile rats (dosed on postnatal days 4 through 52) and dogs (dosed from postnatal weeks 3 through 7) at doses of up to 1800 mg/kg/day (approximately 7 and 24 times, respectively, the maximum recommended pediatric dose of 60 mg/kg/day on a mg/m 2 basis) did not demonstrate adverse effects on postnatal development.
🧓 Geriatric Use ▾
8.5Geriatric Use There were 347 subjects in clinical studies of levetiracetam that were 65 years old and over. No overall differences in safety were observed between these subjects and younger subjects. There were insufficient numbers of elderly subjects in controlled trials of epilepsy to adequately assess the effectiveness of levetiracetam in these patients.
Levetiracetam is known to be substantially excreted by the kidney, and the risk of adverse reactions to this drug may be greater in patients with impaired renal function. Because elderly patients are more likely to have decreased renal function, care should be taken in dose selection, and it may be useful to monitor renal function [see Clinical Pharmacology (12.3 )].
🆘 Overdosage ▾
10 OVERDOSAGE
10.1Signs, Symptoms and Laboratory Findings of Acute Overdosage in Humans The highest known dose of oral levetiracetam received in the clinical development program was 6000 mg/day. Other than drowsiness, there were no adverse reactions in the few known cases of overdose in clinical trials. Cases of somnolence, agitation, aggression, depressed level of consciousness, respiratory depression, and coma were observed with levetiracetam overdoses in postmarketing use.
10.2Management of Overdose There is no specific antidote for overdose with levetiracetam. If indicated, elimination of unabsorbed drug should be attempted by emesis or gastric lavage; usual precautions should be observed to maintain airway. General supportive care of the patient is indicated including monitoring of vital signs and observation of the patient’s clinical status.
A Certified Poison Control Center should be contacted for up to date information on the management of overdose with levetiracetam.
10.3Hemodialysis Standard hemodialysis procedures result in significant clearance of levetiracetam (approximately 50% in 4 hours) and should be considered in cases of overdose. Although hemodialysis has not been performed in the few known cases of overdose, it may be indicated by the patient's clinical state or in patients with significant renal impairment.
🧬 Clinical Pharmacology ▾
12 CLINICAL PHARMACOLOGY
12.1Mechanism of Action The precise mechanism(s) by which levetiracetam exerts its antiepileptic effect is unknown. A saturable and stereoselective neuronal binding site in rat brain tissue has been described for levetiracetam. Experimental data indicate that this binding site is the synaptic vesicle protein SV2A, thought to be involved in the regulation of vesicle exocytosis.
Although the molecular significance of levetiracetam binding to synaptic vesicle protein SV2A is not understood, levetiracetam and related analogs showed a rank order of affinity for SV2A which correlated with the potency of their antiseizure activity in audiogenic seizure-prone mice. These findings suggest that the interaction of levetiracetam with the SV2A protein may contribute to the antiepileptic mechanism of action of the drug.
12.2Pharmacodynamics Effects on QTc Interval The effect of levetiracetam on QTc prolongation was evaluated in a randomized, double-blind, positive-controlled (moxifloxacin 400 mg) and placebo-controlled crossover study of levetiracetam (1000 mg or 5000 mg) in 52 healthy subjects. The upper bound of the 90% confidence interval for the largest placebo-adjusted, baseline-corrected QTc was below 10 milliseconds. Therefore, there was no evidence of significant QTc prolongation in this study.
12.3Pharmacokinetics Equivalent doses of intravenous (IV) levetiracetam and oral levetiracetam result in equivalent C max , C min , and total systemic exposure to levetiracetam when the IV levetiracetam is administered as a 15-minute infusion. Overview Levetiracetam is rapidly and almost completely absorbed after oral administration. Levetiracetam injection and tablets are bioequivalent.
The pharmacokinetics of levetiracetam are linear and time-invariant, with low intra- and inter-subject variability. Levetiracetam is not significantly protein-bound (<10% bound) and its volume of distribution is close to the volume of intracellular and extracellular water. Sixty-six percent (66%) of the dose is renally excreted unchanged.
The major metabolic pathway of levetiracetam (24% of dose) is an enzymatic hydrolysis of the acetamide group. It is not liver cytochrome P450 dependent. The metabolites have no known pharmacological activity and are renally excreted.
Plasma half-life of levetiracetam across studies is approximately 6 to 8 hours. It is increased in the elderly (primarily due to impaired renal clearance) and in subjects with renal impairment. The pharmacokinetics of levetiracetam are similar when used as monotherapy or as adjunctive therapy for the treatment of partial-onset seizures.
Distribution The equivalence of levetiracetam injection and the oral formulation was demonstrated in a bioavailability study of 17 healthy volunteers. In this study, levetiracetam 1500 mg was diluted in 100 mL 0.9% sterile saline solution and was infused over 15 minutes. The selected infusion rate provided plasma concentrations of levetiracetam at the end of the infusion period similar to those achieved at T max after an equivalent oral dose.
It is demonstrated that levetiracetam 1500 mg intravenous infusion is equivalent to levetiracetam 3 x 500 mg oral tablets. The time independent pharmacokinetic profile of levetiracetam was demonstrated following 1500 mg intravenous infusion for 4 days with BID dosing. The AUC (0-12) at steady-state was equivalent to AUC inf following an equivalent single dose.
Levetiracetam and its major metabolite are less than 10% bound to plasma proteins; clinically significant interactions with other drugs through competition for protein binding sites are therefore unlikely. Metabolism Levetiracetam is not extensively metabolized in humans. The major metabolic pathway is the enzymatic hydrolysis of the acetamide group, which produces the carboxylic acid metabolite, ucb L057 (24% of dose) and is not dependent on any liver cytochrome P450 isoenzymes.
The major metabolite is inactive in animal seizure models. Two…
🧬 Mechanism of Action ▾
12.1Mechanism of Action The precise mechanism(s) by which levetiracetam exerts its antiepileptic effect is unknown. A saturable and stereoselective neuronal binding site in rat brain tissue has been described for levetiracetam. Experimental data indicate that this binding site is the synaptic vesicle protein SV2A, thought to be involved in the regulation of vesicle exocytosis.
Although the molecular significance of levetiracetam binding to synaptic vesicle protein SV2A is not understood, levetiracetam and related analogs showed a rank order of affinity for SV2A which correlated with the potency of their antiseizure activity in audiogenic seizure-prone mice. These findings suggest that the interaction of levetiracetam with the SV2A protein may contribute to the antiepileptic mechanism of action of the drug.
📦 How Supplied / Storage and Handling ▾
16 HOW SUPPLIED/STORAGE AND HANDLING
16.1How Supplied Levetiracetam injection, USP 500 mg/5 mL is a clear, colorless, sterile solution. It is supplied in single-dose 5 mL vials, available in cartons of 10 vials (NDC 67457-790-05).
16.2Storage Store at 20° to 25°C (68° to 77°F); excursions permitted between 15° to 30°C (59° to 86°F) [see USP Controlled Room Temperature].
📋 Description ▾
11 DESCRIPTION Levetiracetam injection, USP is an antiepileptic drug available as a clear, colorless, sterile solution (100 mg/mL) for intravenous administration. The chemical name of levetiracetam, a single enantiomer, is (-)-(S)-α-ethyl-2-oxo-1-pyrrolidine acetamide, its molecular formula is C 8 H 14 N 2 O 2 and its molecular weight is 170.21. Levetiracetam is chemically unrelated to existing antiepileptic drugs (AEDs).
It has the following structural formula: Levetiracetam, USP is a white to almost white powder. It is very soluble in water, soluble in acetonitrile and practically insoluble in hexane. Levetiracetam injection, USP contains 100 mg of levetiracetam, USP per mL.
It is supplied in single-dose 5 mL vials containing 500 mg levetiracetam, USP, water for injection, 45 mg sodium chloride, and buffered at approximately pH 5.5 with glacial acetic acid and 8.2 mg sodium acetate trihydrate. Levetiracetam injection, USP must be diluted prior to intravenous infusion [see Dosage and Administration (2.6) ]. Levetiracetam Structural Formula
💬 Information for Patients ▾
17 PATIENT COUNSELING INFORMATION Psychiatric Reactions and Changes in Behavior Advise patients and their caregivers that levetiracetam may cause changes in behavior (e.g., aggression, agitation, anger, anxiety, apathy, depression, hostility, and irritability) and psychotic symptoms [see Warnings and Precautions (5.1) ]. Effects on Driving or Operating Machinery Inform patients that levetiracetam may cause dizziness and somnolence. Inform patients not to drive or operate machinery until they have gained sufficient experience on levetiracetam to gauge whether it adversely affects their ability to drive or operate machinery [see Warnings and Precautions (5.2) ].
Anaphylaxis and Angioedema Advise patients to discontinue levetiracetam and seek medical care if they develop signs and symptoms of anaphylaxis or angioedema [see Warnings and Precautions (5.3) ]. Dermatological Adverse Reactions Advise patients that serious dermatological adverse reactions have occurred in patients treated with levetiracetam and instruct them to call their physician immediately if a rash develops [see Warnings and Precautions (5.4) ]. DRESS/Multiorgan Hypersensitivity Instruct patients and caregivers that a fever or rash associated with signs of other organ system involvement (e.g., lymphadenopathy, hepatic dysfunction) may be drug-related and should be reported to their healthcare provider immediately.
Levetiracetam should be discontinued immediately if a serious hypersensitivity reaction is suspected [see Warnings and Precautions (5.5) ] . Withdrawal of Levetiracetam Advise patients and caregivers not to discontinue use of levetiracetam without consulting with their healthcare provider. Levetiracetam should normally be gradually withdrawn to reduce the potential of increased seizure frequency and status epilepticus [see Warnings and Precautions (5.7) ].
Pregnancy Advise patients to notify their healthcare provider if they become pregnant or intend to become pregnant during levetiracetam therapy. Encourage patients to enroll in the North American Antiepileptic Drug (NAAED) pregnancy registry if they become pregnant [see Use in Specific Populations (8.1) ]. Manufactured for: Mylan Institutional LLC Morgantown, WV 26505 U.S.A.
Manufactured by: Mylan Laboratories Limited Bangalore - 560076, India MAY 2024