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This page presents data from the FDA Adverse Event Reporting System (FAERS) and the FDA-approved drug label. A report submitted to FAERS does not prove a drug caused the reported event. Always consult a healthcare provider about medications.

Lamotrigine

anti-epileptic agent
Last updated: June 21, 2026
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Lamotrigine is a medication, a anti-epileptic agent. According to the FDA-approved label, Lamotrigine orally disintegrating tablets are indicated for: Epilepsy—adjunctive therapy in patients aged 2 years and older : partial-onset seizures. primary generalized tonic-clonic (PGTC) seizures. generalized seizures of Lennox-Gastaut syndrome. FAERS contains 129,124 submissions naming this drug from 2002 through 2026; the top three reactions cited are drug ineffective, rash, and seizure.

Most-Reported Reactions

Counts of the reactions most often cited in FAERS submissions that named Lamotrigine. Inclusion here does not establish causation - submitters describe what was observed, not what was confirmed. One submission can list several reactions, so the totals exceed the report count.

DRUG INEFFECTIVE 10,084 (7.8%) RASH 8,488 (6.6%) SEIZURE 6,692 (5.2%) NAUSEA 6,281 (4.9%) FATIGUE 6,038 (4.7%) OFF LABEL USE 6,014 (4.7%) DIZZINESS 5,886 (4.6%) HEADACHE 5,668 (4.4%) DEPRESSION 5,065 (3.9%) VOMITING 4,662 (3.6%) SOMNOLENCE 4,420 (3.4%) PYREXIA 4,404 (3.4%) ANXIETY 4,377 (3.4%) DRUG INTERACTION 4,365 (3.4%) TOXICITY TO VARIOUS AGENTS 4,190 (3.2%)

Patient Demographics

Patient sex and age across the FAERS submissions that named Lamotrigine. Percentages here are computed only from submissions where these fields were filled in - many leave them blank.

By Sex

Female Male Unknown

By Age Group

0-17 18-44 45-64 65+

Severity Outcomes

Severity flags recorded across the 129,124 FAERS submissions that named Lamotrigine. Each bar shows the count of those reports carrying that flag. A single case can carry more than one (a hospitalization that became life-threatening, for example), so these bars are independent rates - they don't sum to 100%. Inclusion of a case under any flag does not establish that the drug caused the outcome.

DEATH 11,032 (8.5%) HOSPITALIZATION 39,350 (30.5%) LIFE-THREATENING 8,255 (6.4%) DISABLING 5,280 (4.1%)

Submissions Per Quarter

Quarterly count of FAERS submissions that named Lamotrigine. Ups and downs on this chart can track prescribing volume, news cycles, or shifts in how reports get filed, rather than the drug becoming safer or more dangerous.

2002 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

From the FDA-Approved Label

Excerpts from the official FDA-approved prescribing information for Lamotrigine. This is the authoritative source on indications, warnings, and known adverse reactions.

Indications

1 INDICATIONS AND USAGE Lamotrigine orally disintegrating tablets are indicated for: Epilepsy—adjunctive therapy in patients aged 2 years and older : partial-onset seizures. primary generalized tonic-clonic (PGTC) seizures. generalized seizures of Lennox-Gastaut syndrome. ( 1.1 ) Epilepsy—monotherapy in patients aged 16 years and older : Conversion to monotherapy in patients with partial-onset seizures who are receiving treatment with carbamazepine, phenytoin, phenobarbital, primidone, or valproate as the single antiepileptic drug. ( 1.1 ) Bipolar disorder : Maintenance treatment of bipolar I disorder to delay the time to occurrence of mood episodes in patients treated for acute mood episodes with standard therapy. ( 1.2 ) Limitations of Use: Treatment of acute manic or mixed episodes is not recommended. Effectiveness of lamotrigine in the acute treatment of mood episodes has not been established. 1.1 Epilepsy Adjunctive Therapy Lamotrigine orally disintegrating tablets are indicated as adjunctive therapy for the following seizure types in patients aged 2 years and older: partial-onset seizures. primary generalized tonic-clonic (PGTC) seizures. (continues in label)

Adverse Reactions (from label)

6 ADVERSE REACTIONS The following serious adverse reactions are described in more detail in the Warnings and Precautions section of the labeling: Serious Skin Rashes [see Warnings and Precautions (5.1) ] Hemophagocytic Lymphohistiocytosis [see Warnings and Precautions (5.2) ] Multiorgan Hypersensitivity Reactions and Organ Failure [see Warnings and Precautions (5.3) ] Cardiac Rhythm and Conduction Abnormalities [see Warnings and Precautions (5.4) ] Blood Dyscrasias [see Warnings and Precautions (5.5) ] Suicidal Behavior and Ideation [see Warnings and Precautions (5.6) ] Aseptic Meningitis [see Warnings and Precautions (5.7) ] Withdrawal Seizures [see Warnings and Precautions (5.10) ] Status Epilepticus [see Warnings and Precautions (5.11) ] Epilepsy : Most common adverse reactions (incidence ≥10%) in adults were dizziness, headache, diplopia, ataxia, nausea, blurred vision, somnolence, rhinitis, pharyngitis, and rash. Additional adverse reactions (incidence ≥10%) reported in children included vomiting, infection, fever, accidental injury, diarrhea, abdominal pain, and tremor. ( 6.1 ) Bipolar disorder : Most common adverse reactions (incidence >5%) in adults were nausea, insomnia, s...

FDA label effective date: 2026-04-22

Disclaimer

AdverseEvent.ai is not affiliated with the FDA. Adverse-event counts come from the FDA Adverse Event Reporting System (FAERS). Drug labels come from the FDA drug label dataset. A report submitted to FAERS does not prove a drug caused the reported event — always consult a healthcare provider about medications. This site is for informational purposes only and is not medical advice.