Infectious Disease Book



Aka: Mefloquine, Lariam
  1. Indications
    1. Prophylaxis or Treatment of Malaria
    2. Preferred agent in Chloroquine resistance areas
  2. Contraindications
    1. History of Epilepsy (Seizure Disorder)
    2. History of psychiatric disorder
    3. Concomitant Beta Blocker use
    4. First Trimester Pregnancy
      1. May be used in second or third trimester pregnancy
    5. Children under age 3 months
  3. Pharmacokinetics
    1. Half-life: 33 days
    2. Steady state reached
      1. Weekly dose: 7 weeks
      2. Loading dose: 4 days
  4. Adverse Effects
    1. Vestibular toxicity
      1. Risk of longterm Vertigo and Tinnitus
    2. Arrhythmia in patients with cardiac conduction defect
      1. QT Prolongation
      2. Bradycardia
    3. Neuropsychological effects (uncommon 1:200 to 1:500, but is a FDA black box warning)
      1. Insomnia
      2. Nightmares
      3. Anxiety
      4. Irritability
      5. Major Depression
        1. Possible increased Suicidality
      6. Psychosis (paranoia, Hallucinations) or Seizures (rare)
        1. Prophylaxis Incidence: <1:10,000
        2. Treatment Incidence: 1:100 to 1:1500
    4. Pregnancy
      1. No significant adverse fetal affects in studies
  5. Directions
    1. Take with food and full glass of water
  6. Dosing: Prophylaxis
    1. Protocol
      1. Start dosing 1 week before exposure
      2. Complete dosing 4 weeks after exposure
    2. Adult
      1. Mefloquine 228 mg base (250mg salt) PO once weekly
    3. Child
      1. Weight <15 kg
        1. Dose: 4.6 mg/kg base (5 mg/kg salt) PO once weekly
      2. Weight 15-19 kg
        1. Mefloquine 1/4 tablet PO once per week
      3. Weight: 20-30 kg
        1. Mefloquine 1/2 tablet PO once per week
      4. Weight: 31-45 kg
        1. Mefloquine 3/4 tablet PO once per week
      5. Weight: >45 kg
        1. Mefloquine 1 tablet PO once per week
  7. Dosing: Treatment
    1. Adult: 1250 mg for 1 dose
    2. Child: 15 mg/kg for 1 dose
  8. References
    1. (2013) Presc Lett 20(9)
    2. Boudreau (1993) Trop Med Parasitol 44(3):257-65 [PubMed]
    3. Vanhauwere (1998) Am J Trop Med Hyg 58:17-21 [PubMed]
    4. Weimeke (1991) Am J Trop Med Hyg 45:86-9 [PubMed]
Medication Costs
mefloquine (on 5/17/2017 at Medicaid.Gov Pharmacy Drug pricing)
MEFLOQUINE HCL 250 MG TABLET Generic $4.87 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.

Mefloquine (C0025153)

Definition (NCI) A quinolinemethanol derivative with antimalarial, anti-inflammatory, and potential chemosensitization and radiosensitization activities. Although the exact mechanism remains to be elucidated, mefloquine, a weak base, preferentially accumulates in lysosomes and disrupts lysosomal function and integrity, thereby leading to host cell death. Similar to chloroquine, the chemosensitizing and radiosensitizing activities of this agent may be related to its inhibition of autophagocytosis, a cellular mechanism involving lysosomal degradation that minimizes the production of reactive oxygen species (ROS) related to tumor reoxygenation and tumor exposure to chemotherapeutic agents and radiation. Compared to chloroquine, mefloquine has better blood-brain-barrier (BBB) penetration.
Definition (MSH) A phospholipid-interacting antimalarial drug (ANTIMALARIALS). It is very effective against PLASMODIUM FALCIPARUM with very few side effects.
Concepts Pharmacologic Substance (T121) , Organic Chemical (T109)
MSH D015767
SnomedCT 387505001, 87567009
LNC LP21305-5, MTHU013611
English Mefloquine, Mephloquine, 4-Quinolinemethanol, alpha-2-piperidinyl-2,8-bis(trifluoromethyl)-, (R*,S*)-(+-)-, mefloquine (medication), Mefloquine [Chemical/Ingredient], mephloquine, mefloquine, MEFLOQUINE, Mefloquine product, Mefloquine (product), Mefloquine (substance)
Swedish Meflokin
Czech meflochin
Finnish Meflokiini
Japanese メフロキン
Polish Meflochina
Spanish mefloquina (producto), mefloquina (sustancia), mefloquina, Mefloquina
French Méfloquine
German Mefloquin
Italian Meflochina
Portuguese Mefloquina
Derived from the NIH UMLS (Unified Medical Language System)

Lariam (C0699989)

Concepts Pharmacologic Substance (T121) , Organic Chemical (T109)
MSH D015767
English lariam, Lariam, Hoffmann La Roche Brand of Mefloquine Hydrochloride, Hoffmann-La Roche Brand of Mefloquine Hydrochloride, Roche Brand of Mefloquine Hydrochloride
Derived from the NIH UMLS (Unified Medical Language System)

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