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Lamictal (Lamotrigine) - Summary



LAMICTAL® can cause serious rashes requiring hospitalization and discontinuation of treatment. The incidence of these rashes, which have included Stevens-Johnson syndrome, is approximately 0.8% (8 per 1,000) in pediatric patients (2 to 16 years of age) receiving LAMICTAL as adjunctive therapy for epilepsy and 0.3% (3 per 1,000) in adults on adjunctive therapy for epilepsy. In clinical trials of bipolar and other mood disorders, the rate of serious rash was 0.08% (0.8 per 1,000) in adult patients receiving LAMICTAL as initial monotherapy and 0.13% (1.3 per 1,000) in adult patients receiving LAMICTAL as adjunctive therapy. In a prospectively followed cohort of 1,983 pediatric patients (2 to 16 years of age) with epilepsy taking adjunctive LAMICTAL, there was 1 rash-related death. In worldwide postmarketing experience, rare cases of toxic epidermal necrolysis and/or rash-related death have been reported in adult and pediatric patients, but their numbers are too few to permit a precise estimate of the rate.

Other than age, there are as yet no factors identified that are known to predict the risk of occurrence or the severity of rash caused by LAMICTAL. There are suggestions, yet to be proven, that the risk of rash may also be increased by (1) coadministration of LAMICTAL with valproate (includes valproic acid and divalproex sodium), (2) exceeding the recommended initial dose of LAMICTAL, or (3) exceeding the recommended dose escalation for LAMICTAL. However, cases have occurred in the absence of these factors.

Nearly all cases of life-threatening rashes caused by LAMICTAL have occurred within 2 to 8 weeks of treatment initiation. However, isolated cases have occurred after prolonged treatment (e.g., 6 months). Accordingly, duration of therapy cannot be relied upon as means to predict the potential risk heralded by the first appearance of a rash.

Although benign rashes are also caused by LAMICTAL, it is not possible to predict reliably which rashes will prove to be serious or life threatening. Accordingly, LAMICTAL should ordinarily be discontinued at the first sign of rash, unless the rash is clearly not drug related. Discontinuation of treatment may not prevent a rash from becoming life threatening or permanently disabling or disfiguring [see Warnings and Precautions].



LAMICTAL (lamotrigine), an AED of the phenyltriazine class, is chemically unrelated to existing AEDs.


Adjunctive Therapy: LAMICTAL is indicated as adjunctive therapy for the following seizure types in patients ≥2 years of age:

  • partial seizures
  • primary generalized tonic-clonic seizures
  • generalized seizures of Lennox-Gastaut syndrome

Monotherapy: LAMICTAL is indicated for conversion to monotherapy in adults (≥16 years of age) with partial seizures who are receiving treatment with carbamazepine, phenytoin, phenobarbital, primidone, or valproate as the single antiepileptic drug (AED).

Safety and effectiveness of LAMICTAL have not been established (1) as initial monotherapy; (2) for conversion to monotherapy from AEDs other than carbamazepine, phenytoin, phenobarbital, primidone, or valproate; or (3) for simultaneous conversion to monotherapy from 2 or more concomitant AEDs.

Bipolar Disorder

LAMICTAL is indicated for the maintenance treatment of Bipolar I Disorder to delay the time to occurrence of mood episodes (depression, mania, hypomania, mixed episodes) in adults (≥18 years of age) treated for acute mood episodes with standard therapy. The effectiveness of LAMICTAL in the acute treatment of mood episodes has not been established.

The effectiveness of LAMICTAL as maintenance treatment was established in 2 placebo-controlled trials in patients with Bipolar I Disorder as defined by DSM-IV [see Clinical Studies]. The physician who elects to prescribe LAMICTAL for periods extending beyond 16 weeks should periodically re-evaluate the long-term usefulness of the drug for the individual patient.

See all Lamictal indications & dosage >>


Published Studies Related to Lamictal (Lamotrigine)

Lamotrigine in psychiatric disorders. [2013]
CONCLUSIONS: Lamotrigine is recommended in bipolar maintenance when depression is

A factor analytic study in bipolar depression, and response to lamotrigine. [2013]
sample... CONCLUSION: This study has identified 7 factors of the HDRS in a large sample of

Analysis of three lamotrigine extended-release clinical trials: comparison of pragmatic ITT and LOCF methodologies. [2012]
Early withdrawal of patients from a clinical trial can compromise the robustness of the data by introducing bias into the analysis. This is most commonly addressed by using the "intent to treat" (ITT) population and "last observation carried forward" (LOCF) methodology, where a patient's last assessment is carried forward.

Longitudinal changes in magnetisation transfer ratio in secondary progressive multiple sclerosis: data from a randomised placebo controlled trial of lamotrigine. [2012]
Sodium blockade with lamotrigine is neuroprotective in animal models of central nervous system demyelination. This study evaluated the effect of lamotrigine on magnetisation transfer ratio (MTR), a putative magnetic resonance imaging measure of intact brain tissue, in a group of subjects with secondary progressive multiple sclerosis (MS)...

Efficacy and safety of pregabalin versus lamotrigine in patients with newly diagnosed partial seizures: a phase 3, double-blind, randomised, parallel-group trial. [2011.10]
BACKGROUND: Efficacious and safe monotherapy options are needed for adult patients with newly diagnosed epilepsy. As an adjunctive treatment for partial seizures, pregabalin compares favourably with lamotrigine and is an effective, approved treatment. We studied the efficacy and safety of pregabalin as monotherapy, using a design that complied with European regulatory requirements and International League Against Epilepsy guidelines... INTERPRETATION: Pregabalin has similar tolerability but seems to have inferior efficacy to lamotrigine for the treatment of newly diagnosed partial seizures in adults. Inferior efficacy of pregabalin might have been attributable to limitations in the study design, as treatment doses might have not been optimised adequately or early enough. FUNDING: Pfizer Inc. Copyright (c) 2011 Elsevier Ltd. All rights reserved.

more studies >>

Clinical Trials Related to Lamictal (Lamotrigine)

Study Evaluating LAMICTAL Extended-Release Therapy Added To Current Seizure Treatments In Patients With Primary Generalized Tonic-Clonic Seizures (PGTC) Seizures [Completed]
This study is being conducted to compare the efficacy and safety of LAMICTAL (lamotrigine) extended-release with placebo in the treatment of Primary Generalized Tonic-Clonic (PGTC) seizures. LAMICTAL extended-release is an investigational drug. Placebo tablets look like LAMICTAL extended-release tablets but do not contain active medication. In this study, LAMICTAL extended-release or placebo tablets will be added to current seizure treatments.

Study Evaluating LAMICTAL Extended-Release Therapy Added To Current Seizure Treatments In Patients With Partial Seizures [Completed]
This study is being conducted to compare the efficacy and safety of LAMICTAL (lamotrigine) extended-release with placebo in the treatment of partial seizures. LAMICTAL extended-release is an investigational drug. Placebo tablets look like LAMICTAL extended-release tablets but do not contain active medication. In this study, LAMICTAL extended-release or placebo tablets will be added to current seizure treatments.

Lamictal TM, Haloperidol Decanoate in Schizophrenia [Terminated]
The purpose of this study is to determine the effect of lamotrigine augmentation of Haloperidol decanoate in the treatment of Resistant Schizophrenia predominantly by verbal resistant hallucinosis: A randomized, double-blind, placebo-controlled, study. Nadir A. Aliyev & Zafar N. Aliyev Central Mental Clinic for Outpatients of Baku city of Azerbaijan Republic Abstract: OBJECTIVE: The current paper reports on a double-blind, randomized study of the role of lamotrigine as an augmentation agent to haloperidol decanoate in the treatment of out patient's schizophrenia with verbal resistant hallucinosis.

Lamotrigine Alone Compared to Lamotrigine Plus Antidepressant for the Treatment of Bipolar II Depression [Completed]
Depression is a medical condition characterized by feeling sad even when good things happen, having low energy and motivation, and sometimes even experiencing suicidal thoughts. Bipolar II Disorder is an illness in which periods of depression alternate with periods of abnormally elevated mood, energy and activity, referred to as hypomania. After Major Depressive Disorder, Bipolar II Disorder is the most common cause of depression. Unfortunately, antidepressant medications, used alone, do not work as well in treating Bipolar depression as they do in treating other kinds of depression. Lamotrigine is a medication which studies show is effective in treating Bipolar depression. The investigators will determine if lamotrigine works best to treat Bipolar II depression if it is used alone, or if it is taken with an antidepressant. In the first part of our investigation, people with Bipolar II depression who have not responded to an antidepressant will either add lamotrigine to their antidepressant, or will stop the antidepressant and take lamotrigine alone. They will see the study doctor for 6 visits over 8 weeks, and will answer questions about their depressive symptoms and their overall health. The purpose of this study phase is to determine which treatment works best to treat active Bipolar depression. In the second part of the study, people who have responded to their assigned treatment may continue to receive it for another 44 weeks. They will see the study doctor monthly, and will answer similar questions about their health. Participants will also receive a physical examination and get a blood test three times during the study. The purpose of the second phase is to ascertain which treatment is best at preventing relapses of depression. The investigators hypothesize that people who take Lamotrigine plus an antidepressant will recover from their depression more completely, have a longer period of wellness, and have better quality of life compared to those taking Lamotrigine alone.

Efficacy and Safety Study of Lamotrigine to Treat Trigeminal Neuralgia [Completed]
The purpose of this study was to determine the efficacy and safety of lamotrigine in patients with trigeminal neuralgia (TGN).

more trials >>

Reports of Suspected Lamictal (Lamotrigine) Side Effects

Rash (423)Pyrexia (329)Stevens-Johnson Syndrome (197)Erythema (163)Drug Eruption (155)Convulsion (153)Alanine Aminotransferase Increased (141)Drug Rash With Eosinophilia and Systemic Symptoms (139)C-Reactive Protein Increased (121)Aspartate Aminotransferase Increased (117)more >>


Based on a total of 40 ratings/reviews, Lamictal has an overall score of 7.72. The effectiveness score is 8.35 and the side effect score is 7.85. The scores are on ten point scale: 10 - best, 1 - worst. Below are selected reviews: the highest, the median and the lowest rated.

Lamictal review by 46 year old male patient

Overall rating:  
Effectiveness:   Highly Effective
Side effects:   No Side Effects
Treatment Info
Condition / reason:   bipolar depression
Dosage & duration:   100MG taken 3/day for the period of 4 years
Other conditions:   Allergies; back pain
Other drugs taken:   Effexor; Allegra; Ketoprofen; Viagra
Reported Results
Benefits:   The combination of Lamictal and Effexor eliminated severe mood swings betweens hypomania and depression, and made my depression manageable.
Side effects:   Possibly minor sexual side effects: more difficult to reach organism.
Comments:   Morning: 1 capsule (150MG) Effexor XR; 1 tablet 100MG Lamictal. Evening: 2 tablets 100MG Lamictal.


Lamictal review by 28 year old female patient

Overall rating:  
Effectiveness:   Considerably Effective
Side effects:   Mild Side Effects
Treatment Info
Condition / reason:   Bipolar
Dosage & duration:   200 MG taken once daily for the period of 8 months
Other conditions:   N/A
Other drugs taken:   Effexor 300 MGs
Reported Results
Benefits:   I was hospitalized in January for suicidal thoughts/attempts. At the time, I had been diagnosed with clinical depression and prescriped antidepressants only. They would induce mania and I was totally out of control, so much so that I pretty much lost all of my friends and went through a divorce. At the hospital, I was diagnosed as bipolar and since taking Lamotrogine with Effexor, I've had no thoughts of suicide or cutting, which I used to do often.
Side effects:   Some dizziness and vertigo.
Comments:   Started out with 50 MGs and went up to 200 MGs slowly. I haven't had any severe side effects, just the same I had with antidepressants.


Lamictal review by 39 year old female patient

Overall rating:  
Effectiveness:   Moderately Effective
Side effects:   Extremely Severe Side Effects
Treatment Info
Condition / reason:   Bipolar II
Dosage & duration:   100mg taken qd for the period of 22 months
Other conditions:   N/A
Other drugs taken:   Wellbutrin
Reported Results
Benefits:   The drug stabilized my rapid cycling. It facilitated my reducing alcohol consumption to decrease my hypomanic symptoms.
Side effects:   I had severe suicidal thoughts, severe depression and feelings of isolation, and absolutely no motivation for life. FDA has issued statement that patients are twice as likely to experience suicidal thoughts/ideation on this drug than on placebo. Unfortunately, I was on this drug for 15 months before this information was released and an additional 7 months before I read about it. My psychiatrist (outside the U.S.) was not notified about this potential side effect. I feel like I lost almost two years of my life.
Comments:   QD A.M.: 150 mg Wellbutrin QD A.M.: 100 mg Lamictal

See all Lamictal reviews / ratings >>

Page last updated: 2014-12-01

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