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1 May 2026Potentially dangerous, obsolete, or ineffective

Mefloquine Oral: Dosing and Precautions

Mefloquine guidance for malaria treatment with artesunate, with neuropsychiatric and cardiac precautions.

Also searched as

Mefloquine oralMQ oral
Prescription under medical supervision

Source reviewed

source date listed on the source page

Guide category

Potentially dangerous, obsolete, or ineffective

Safety boundary

Prescription medicine information for clinician-guided use.

Kenza Health Hub presents this medicine page as structured health education. Check dose, route, interactions, pregnancy or breast-feeding considerations, and local protocol with a qualified clinician or pharmacist. Read our medical editorial policy.

This guide page is for structured reference only and does not replace a clinician, pharmacist, or emergency review. Dose choice, route choice, interactions, and safety decisions still need professional judgment.

Use restrictions

Do not administer the combination artesunate-mefloquine as separate tablets. Use co-formulated tablets.

Therapeutic action

Antimalarial.

Indications

  • Treatment of uncomplicated falciparum malaria.
  • Treatment of uncomplicated malaria due to other Plasmodium species, when chloroquine cannot be used.
  • Completion treatment following parenteral therapy for severe malaria.

Forms and strengths

250 mg scored tablet.

Dosage and duration

Child 6 months and over (5 kg and over) and adult: 8 mg/kg once daily for 3 days, in combination with artesunate.

Contra-indications, adverse effects, precautions

  • Do not administer to patients with neuropsychiatric disorders or history thereof, seizures, hypersensitivity to mefloquine or quinine, or mefloquine treatment in the previous 4 weeks.
  • For completion treatment following parenteral therapy for severe malaria: do not administer if the patient developed neurological signs during the acute phase.
  • May cause gastrointestinal disturbances, dizziness, headache, sleeping disorders, and more rarely neuropsychiatric reactions, heart rhythm disorders, hypo- or hypertension, and skin allergies.
  • If the patient vomits less than 30 minutes after administration, repeat the full dose. If the patient vomits within 30 to 60 minutes, re-administer half the dose.
  • Do not combine with anti-epileptics, co-artemether, or chloroquine.
  • Do not administer simultaneously with quinine. If mefloquine is used after quinine IV, administer mefloquine 12 hours after the last dose of quinine.
  • Administer with caution to patients taking antiarrhythmics, beta-blockers, calcium-channel blockers, or digitalis.
  • Pregnancy: no contra-indication.
  • Breast-feeding: no contra-indication.

Source

MSF Essential drugs practical guidelines (January 2026)

This page combines source-derived medicine reference sections with Kenza editorial context, while leaving out the Storage and Remarks sections from the source batch.

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