Levetiracetam - Side Effects levetiracetam

Side Effects for LEVETIRACETAM (tablet, film coated) are also known as adverse reactions. Below is a summary of known side effects for Levetiracetam. If you experience side effects when taking Levetiracetam, be sure to tell your doctor.

Adverse Reactions

The following adverse reactions are discussed in more details in other sections of labeling:

Most common adverse reactions (incidence ≥ 5% more than placebo) include:

  • Adult patients: 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.

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.

partial-onset seizures
adults

In controlled clinical studies in adults with partial-onset seizures [see Clinical Studies (14.1)], the most common adverse reactions in patients receiving levetiracetam tablets 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 tablets.

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 tablets or placebo was added to concurrent AED therapy.

Table 3: Adverse Reactions in Pooled Placebo-Controlled, Adjunctive Studies in Adults Experiencing Partial-Onset Seizures

Levetiracetam Tablets
(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, 15% of patients receiving levetiracetam tablets 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 tablets-treated patients than in placebo-treated patients.

Table 4: Adverse Reactions that Resulted in Discontinuation or Dose Reduction in Placebo-Controlled Studies in Adult Patients Experiencing Partial-Onset Seizures

Adverse
Reaction

Levetiracetam Tablets
(N = 769)
%

Placebo
(N = 439)
%

Somnolence

4

2

Dizziness

1

0

pediatric patients 4 years to < 16 years

The adverse reaction data presented below was obtained from a pooled analysis of two controlled pediatric clinical studies in pediatric patients 4 to 16 years of age with partial-onset seizures. The most common adverse reactions in pediatric patients receiving levetiracetam tablets in combination with other AEDs, for events with rates greater than placebo, were fatigue, aggression, nasal congestion, decreased appetite, and irritability.

Table 5 lists adverse reactions from the pooled pediatric controlled studies (4 to 16 years of age) that occurred in at least 2% of pediatric levetiracetam tablets-treated patients and were numerically more common than in pediatric patients treated with placebo. In these studies, either levetiracetam tablets or placebo was added to concurrent AED therapy.

Table 5: Adverse Reactions in Pooled Placebo-Controlled, Adjunctive Studies in Pediatric Patients Ages 4 to 16 Years Experiencing Partial-Onset Seizures

Levetiracetam Tablets
(N = 165)
%

Placebo
(N = 131)
%

Headache

19

15

Nasopharyngitis

15

12

Vomiting

15

12

Somnolence

13

9

Fatigue

11

5

Aggression

10

5

Cough

9

5

Nasal Congestion

9

2

Upper Abdominal Pain

9

8

Decreased Appetite

8

2

Abnormal Behavior

7

4

Dizziness

7

5

Irritability

7

1

Pharyngolaryngeal Pain

7

4

Diarrhea

6

2

Lethargy

6

5

Insomnia

5

3

Agitation

4

1

Anorexia

4

3

Head Injury

4

0

Altered Mood

3

1

Constipation

3

1

Contusion

3

1

Depression

3

1

Fall

3

2

Influenza

3

1

Affect Lability

2

1

Anxiety

2

1

Arthralgia

2

0

Confusional State

2

0

Conjunctivitis

2

0

Ear Pain

2

1

Gastroenteritis

2

0

Joint Sprain

2

1

Mood Swings

2

1

Neck Pain

2

1

Rhinitis

2

0

Sedation

2

1

In the controlled pooled pediatric clinical studies in patients 4-16 years of age, 7% of patients receiving levetiracetam tablets and 9% receiving placebo discontinued as a result of an adverse reaction.

pediatric patients 1 month to < 4 years

In the 7-day, controlled pediatric clinical study in children 1 month to less than 4 years of age with partial-onset seizures, the most common adverse reactions in patients receiving levetiracetam tablets in combination with other AEDs, for events with rates greater than placebo, were somnolence and irritability. Because of the shorter exposure period, incidences of adverse reactions are expected to be lower than in other pediatric studies in older patients. Therefore, other controlled pediatric data, presented above, should also be considered to apply to this age group.

Table 6 lists adverse reactions that occurred in at least 5% of pediatric epilepsy patients (ages 1 month to < 4 years) treated with levetiracetam tablets in the placebo-controlled study and were numerically more common than in patients treated with placebo. In this study, either levetiracetam tablets or placebo was added to concurrent AED therapy.

Table 6: Adverse Reactions in a Placebo-Controlled, Adjunctive Study in Pediatric Patients Ages 1 Month to < 4 Years Experiencing Partial-Onset Seizures

Levetiracetam Tablets
(N = 60)
%

Placebo
(N = 56)
%

Somnolence

13

2

Irritability

12

0

In the 7-day controlled pediatric clinical study in patients 1 month to < 4 years of age, 3% of patients receiving levetiracetam tablets and 2% receiving placebo either discontinued or had a dose reduction as a result of an adverse reaction. There was no adverse reaction that resulted in discontinuation for more than one patient.

myoclonic seizures

Although the pattern of adverse reactions in this study seems somewhat different from that seen in patients with partial-onset 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 in patients 12 years of age and older with myoclonic seizures [see Clinical Studies (14.2)], the most common adverse reactions in patients receiving levetiracetam tablets in combination with other AEDs, for events with rates greater than placebo, were somnolence, neck pain, and pharyngitis.

Table 7 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 tablets or placebo was added to concurrent AED therapy.

Table 7: Adverse Reactions in a Placebo-Controlled, Adjunctive Study in Patients 12 Years of Age and Older with Myoclonic Seizures

Levetiracetam Tablets
(N = 60)
%

Placebo
(N = 60)
%

Somnolence

12

2

Neck pain

8

2

Pharyngitis

7

0

Depression

5

2

Influenza

5

2

Vertigo

5

3

In the placebo-controlled study, 8% of patients receiving levetiracetam tablets 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 tablets-treated patients than in placebo-treated patients are presented in Table 8.

Table 8: Adverse Reactions that Resulted in Discontinuation or Dose Reduction in a Placebo-Controlled Study in Patients with Juvenile Myoclonic Epilepsy

Adverse Reaction

Levetiracetam Tablets
(N = 60)
%

Placebo
(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-onset 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 4 years of age and older with PGTC seizures [see Clinical Studies (14.3)], the most common adverse reaction in patients receiving levetiracetam tablets in combination with other AEDs, for events with rates greater than placebo, was nasopharyngitis.

Table 9 lists adverse reactions that occurred in at least 5% of idiopathic generalized epilepsy patients experiencing PGTC seizures treated with levetiracetam tablets and were numerically more common than in patients treated with placebo. In this study, either levetiracetam tablets or placebo was added to concurrent AED therapy.

Table 9: Adverse Reactions in a Placebo-Controlled, Adjunctive Study in Patients 4 Years of Age and Older with PGTC Seizures

Levetiracetam Tablets
(N = 79)
%

Placebo
(N = 84)
%

Nasopharyngitis

14

5

Fatigue

10

8

Diarrhea

8

7

Irritability

6

2

Mood swings

5

1

In the placebo-controlled study, 5% of patients receiving levetiracetam tablets 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 4 and 8).

In addition, the following adverse reactions were seen in other controlled adult studies of levetiracetam tablets: balance disorder, disturbance in attention, eczema, memory impairment, myalgia, and blurred vision.

comparison of gender, age & race

The overall adverse reaction profile of levetiracetam tablets was similar between females and males. There are insufficient data to support a statement regarding the distribution of adverse reactions by age and race.

postmarketing experience

The following adverse reactions have been identified during postapproval use of levetiracetam tablets. 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.

The following adverse reactions have been reported in patients receiving marketed levetiracetam tablets worldwide. The listing is alphabetized: abnormal liver function test, acute kidney injury, anaphylaxis, angioedema, agranulocytosis, 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, and weight loss. Alopecia has been reported with levetiracetam tablets use; recovery was observed in majority of cases where levetiracetam tablets were discontinued.

This drug label information is as submitted to the Food and Drug Administration (FDA) and is intended for informational purposes only. If you think you may have a medical emergency, immediately call your doctor or dial 911. You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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