Product image of Lariam (Mefloquine Hydrochloride) supplied by GNH India

Lariam

Active Ingredient:
Mefloquine Hydrochloride
Origin:
EU

Lariam (Mefloquine Hydrochloride)

Mefloquine, the active ingredient in Lariam, is a quinoline antimalarial presented as an oral tablet for oral use. It treats and prevents malaria in travelers and residents of endemic areas.

GNH India supplies Lariam as a licensed, GDP-compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Manufacturer / TM Owner

Cheplapharm Arzneimittel Gmbh

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Indications & Clinical Uses

Lariam is a quinoline antimalarial used to prevent and treat malaria infections.

  • Prevention of malaria: provides prophylaxis for travelers to endemic regions.
  • Treatment of acute malaria: clears Plasmodium infection in patients with uncomplicated disease.
  • Uncomplicated Plasmodium falciparum malaria: effective as a therapeutic option when resistance to other agents is a concern.

How It Works

  • Mefloquine interferes with the parasite's heme detoxification pathway and disrupts membrane function, leading to accumulation of toxic heme and loss of parasite viability. By targeting these biochemical processes, the drug induces death of intra‑erythrocytic malaria parasites.

Side Effects

Mefloquine may cause a range of adverse reactions, from mild to severe.

Common Side Effects

  • Nausea: occasional upset stomach.
  • Vomiting: may occur after dosing.
  • Abdominal pain: mild discomfort in the stomach area.
  • Dizziness: transient light‑headedness.
  • Insomnia: difficulty sleeping.
  • Visual disturbances: blurred vision or altered perception.

Serious or Rare Side Effects

  • Neuropsychiatric reactions: anxiety, depression, or psychosis.
  • Severe anxiety or panic attacks.
  • Seizures: rare convulsive events.
  • Cardiac arrhythmias: QT prolongation risk.
  • Severe skin reactions: Stevens‑Johnson syndrome or toxic epidermal necrolysis.
  • Hepatotoxicity: rare liver enzyme elevations.

Precautions & Warnings

Before prescribing Lariam, clinicians should evaluate patient history and monitor for specific risks.

  • Medical history review: assess prior neuropsychiatric conditions.
  • Pregnancy considerations: avoid unless benefits outweigh potential risks.
  • Drug interactions: review concomitant medications for possible interactions.
  • Renal/hepatic function: adjust use if organ impairment is present.
  • Adherence: ensure patient completes the full prescribed course.
  • Store at ambient temperature: keep in the original container, protect from moisture.

Avoid Interactions

Mefloquine can interact with several medicines, requiring careful management.

Major Interactions (Avoid)

  • Antacids: may reduce absorption of mefloquine.
  • QT‑prolonging agents: increase risk of cardiac arrhythmia.
  • Strong CYP450 inhibitors: raise mefloquine plasma levels.

Moderate Interactions (Monitor Closely)

  • Warfarin: may enhance anticoagulant effect.
  • Carbamazepine: may reduce mefloquine efficacy.
  • Rifampicin: may lower plasma concentrations of mefloquine.

Frequently Asked Questions

Lariam, containing the active ingredient mefloquine, is used for the prevention of malaria in travelers to endemic regions and for the treatment of acute, uncomplicated malaria caused by Plasmodium species.

Mefloquine interferes with the malaria parasite’s ability to detoxify heme and disrupts its cell membrane function, leading to accumulation of toxic substances inside the parasite and ultimately causing parasite death.

The specific dose and regimen of Lariam are determined by the prescribing healthcare professional based on the indication, patient weight, age, and regional resistance patterns. Patients should follow the prescriber’s instructions exactly.

Safety of mefloquine in pregnancy and lactation has not been fully established. It should only be used when the potential benefits justify the potential risks, and the decision must be made by a qualified healthcare provider.

To order Lariam, submit an enquiry on the product page at gnhindia.com, specifying the required quantity. GNH India works with hospitals, pharmacies and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details and any necessary import documentation.

Lariam (mefloquine) is a quinoline antimalarial offering weekly prophylaxis and single‑dose treatment, whereas alternatives such as atovaquone‑proguanil or doxycycline require daily dosing. Choice depends on resistance patterns, patient tolerance, and specific travel or treatment needs.

Lariam should be stored at ambient temperature, below 25 °C, in its original packaging to protect it from moisture and light. Keep the product out of reach of children and do not use if the packaging is damaged.

Lariam is taken orally, usually with a full glass of water. For prophylaxis, it is started one to two weeks before travel, taken weekly during exposure, and continued for four weeks after leaving the endemic area. For treatment, the regimen is prescribed by a clinician.

Serious risks include neuropsychiatric effects such as severe anxiety, depression, psychosis, seizures, and rare cardiac arrhythmias. Patients should seek immediate medical attention if they experience mood changes, hallucinations, or heart rhythm disturbances.

Lariam is contraindicated in individuals with a history of severe neuropsychiatric disorders, known hypersensitivity to mefloquine or related compounds, and in patients with significant cardiac conduction abnormalities. Pregnant women should only use it when clearly indicated by a healthcare professional.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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