Neurology Book

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Lamotrigine

Aka: Lamotrigine, Lamictal
  1. Indications
    1. Simple Partial Seizures
    2. Complex Partial Seizures
    3. Generalized Tonic Clonic Seizures
  2. Adverse Effects: Dose related
    1. Dizziness
    2. Incoordination
    3. Tremor
    4. Ataxia
    5. Diplopia
    6. Headache
    7. Insomnia
    8. Somnolence
    9. Blurred vision
    10. Nausea or Vomiting
  3. Adverse Effects: Other
    1. Serious skin rash (Incidence 0.08% in adults)
      1. Stevens Johnson Syndrome
      2. Toxic Epidermal Necrolysis
    2. Aplastic Anemia
    3. Thrombocytopenia
    4. Neutropenia
    5. Pancytopenia
    6. Aseptic Meningitis
  4. Drug Interactions
    1. Valproic Acid
    2. Carbamazepine
    3. Phenytoin
    4. Phenobarbital
    5. Primidone
    6. Rifampin
    7. Oral Contraceptives
  5. Dosing: Adults
    1. Initial: 25 mg every other day for 2 weeks
    2. Next: 25 mg orally daily for 2 weeks
    3. Target dose: 50-100 mg orally twice daily
    4. Maximum dose: 400 mg/day
    5. Precautions
      1. Slow titration over 6 weeks or more reduces the risk of Stevens-Johnson Syndrome
      2. Dosing adjustments are needed when used with agents listed under Drug Interactions
  6. Monitoring
    1. Obtain labs monthly for the first 2 months and then every 3 to 12 months
    2. Complete Blood Count
    3. Liver Function Test
Medication Costs
lamotrigine (on 5/17/2017 at Medicaid.Gov Pharmacy Drug pricing)
LAMOTRIGINE 100 MG TABLET Generic $0.06 each
LAMOTRIGINE 150 MG TABLET Generic $0.08 each
LAMOTRIGINE 200 MG TABLET Generic $0.08 each
LAMOTRIGINE 25 MG DISPER TAB Generic $0.23 each
LAMOTRIGINE 25 MG TABLET Generic $0.06 each
LAMOTRIGINE 5 MG DISPER TABLET Generic $0.20 each
LAMOTRIGINE ER 100 MG TABLET Generic $5.40 each
LAMOTRIGINE ER 200 MG TABLET Generic $4.92 each
LAMOTRIGINE ER 25 MG TABLET Generic $2.42 each
LAMOTRIGINE ER 250 MG TABLET Generic $12.02 each
LAMOTRIGINE ER 300 MG TABLET Generic $8.44 each
LAMOTRIGINE ER 50 MG TABLET Generic $5.63 each
LAMOTRIGINE ODT 100 MG TABLET Generic $7.18 each
LAMOTRIGINE ODT 200 MG TABLET Generic $8.21 each
LAMOTRIGINE ODT 25 MG TABLET Generic $5.35 each
LAMOTRIGINE ODT 50 MG TABLET Generic $6.06 each
lamictal (on 4/24/2017 at Medicaid.Gov Pharmacy Drug pricing)
LAMICTAL 100 MG TABLET Generic $0.06 each
LAMICTAL 150 MG TABLET Generic $0.08 each
LAMICTAL 200 MG TABLET Generic $0.08 each
LAMICTAL 25 MG TABLET Generic $0.06 each
LAMICTAL ODT 100 MG TABLET Generic $7.18 each
LAMICTAL ODT 200 MG TABLET Generic $8.21 each
LAMICTAL ODT 50 MG TABLET Generic $6.06 each
LAMICTAL XR 100 MG TABLET Generic $5.40 each
LAMICTAL XR 200 MG TABLET Generic $4.92 each
LAMICTAL XR 300 MG TABLET Generic $8.44 each
LAMICTAL XR 50 MG TABLET Generic $5.63 each
FPNotebook does not benefit financially from showing this medication data or their pharmacy links. This information is provided only to help medical providers and their patients see relative costs. Insurance plans negotiate lower medication prices with suppliers. Prices shown here are out of pocket, non-negotiated rates. See Needy Meds for financial assistance information.

lamotrigine (C0064636)

Definition (NCI) A synthetic phenyltriazine with antiepileptic and analgesic properties. Lamotrigine enhances the action of gamma-aminobutyric acid, an inhibitory neurotransmitter, which may result in a reduction of pain-related transmission of signals along nerve fibers. This agent may also inhibit voltage-gated sodium channels, suppress glutamate release, and inhibit serotonin reuptake. (NCI04)
Definition (NCI_NCI-GLOSS) A drug that is used to help control some types of seizures. It is being studied in the prevention of peripheral neuropathy caused by some chemotherapy drugs. It belongs to the family of drugs called anticonvulsants.
Definition (PDQ) A synthetic phenyltriazine with antiepileptic and analgesic properties. Lamotrigine enhances the action of gamma-aminobutyric acid, an inhibitory neurotransmitter, which may result in a reduction of pain-related transmission of signals along nerve fibers. This agent may also inhibit voltage-gated sodium channels, suppress glutamate release, and inhibit serotonin reuptake. Check for "http://www.cancer.gov/Search/ClinicalTrialsLink.aspx?id=328241&idtype=1" active clinical trials or "http://www.cancer.gov/Search/ClinicalTrialsLink.aspx?id=328241&idtype=1&closed=1" closed clinical trials using this agent. ("http://nciterms.nci.nih.gov:80/NCIBrowser/ConceptReport.jsp?dictionary=NCI_Thesaurus&code=C38703" NCI Thesaurus)
Concepts Pharmacologic Substance (T121) , Organic Chemical (T109)
MSH C047781
SnomedCT 387562000, 96195007
LNC LP17251-7, MTHU012305
English 3,5-diamino-6-(2,3-dichlorophenyl)-as-triazine, lamotrigine (medication), LAMOTRIGINE, lamotrigine [Chemical/Ingredient], lamoTRIgine, LamoTRIgine, 3,5-diamino-6-(2,3-dichlorophenyl)-1,2,4-triazine, lamotrigine, Lamotrigine, Lamotrigine (product), Lamotrigine (substance)
Spanish lamotrigina (producto), lamotrigina (sustancia), lamotrigina
Sources
Derived from the NIH UMLS (Unified Medical Language System)


Lamictal (C0678180)

Definition (CHV) brand name of lamotrigine
Definition (CHV) brand name of lamotrigine
Concepts Pharmacologic Substance (T121) , Organic Chemical (T109)
MSH C047781
English lamotrigine (Lamictal), lamictal, lamictal [brand name], LaMICtal, Lamiktal, Desitin Brand of Lamotrigine, Glaxo Wellcome Brand of Lamotrigine, GlaxoSmithKline Brand of Lamotrigine, Lamictal
Sources
Derived from the NIH UMLS (Unified Medical Language System)


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