📋 Clinical Overview

A fixed-dose combination (FDC) antimalarial medication for the treatment of uncomplicated Plasmodium falciparum malaria. It combines a rapid-acting artemisinin derivative (Artesunate) with a long-acting schizonticide (Mefloquine) to ensure rapid parasite clearance and prevent recrudescence, in line with WHO recommendations for Artemisinin-based Combination Therapy (ACT).

💊 Dosage & Administration

Adult: 4 mg/kg Artesunate (approx. 200mg for 50kg adult) and 8 mg/kg Mefloquine (approx. 400mg for 50kg adult) once daily for 3 days. Typically administered as: Day 1: 2 tablets (Artesunate 100mg + Mefloquine 200mg each), Day 2: 2 tablets, Day 3: 2 tablets. Total: 6 tablets over 3 days.

Note: Take after food to improve tolerance and absorption, especially of Mefloquine. Swallow tablet whole with a full glass of water. Do not crush or chew. If vomiting occurs within 30-60 minutes of dose, a repeat dose should be given.

⚠️ Contraindications

Hypersensitivity to artemisinins, mefloquine, or related compounds (quinolines)
History of severe neuropsychiatric disorders (e.g., psychosis, generalized anxiety disorder, depression with suicidal ideation, convulsive disorders)
Concurrent use with drugs that prolong QT interval or cause bradycardia (e.g., antiarrhythmics, tricyclic antidepressants)
First trimester of pregnancy (relative, see special populations)

🔬 Mechanism of Action

Synergistic combination targeting different stages of the malaria parasite's erythrocytic cycle. Artesunate provides rapid initial reduction of parasite biomass by generating free radicals, while Mefloquine eliminates residual parasites and provides prolonged schizonticidal activity.

🤕 Side Effects

Nausea, vomiting, diarrhea
Dizziness, vertigo
Headache
Loss of appetite
Abdominal pain
Pruritus

🤰 Special Populations

Pregnancy: Category C (US FDA). Use only if the potential benefit justifies the potential risk to the fetus. Avoid in first trimester unless absolutely necessary. Artemisinins are embryotoxic in animal studies. Mefloquine can be used for treatment in second and third trimesters. For pregnant women with uncomplicated P. falciparum, WHO recommends ACTs (including Artesunate-Mefloquine) as first-line in second/third trimester. Consult specialist.

Driving: Patients must NOT drive or operate heavy machinery during treatment and for at least 3 weeks after the last dose due to risk of dizziness, vertigo, and neuropsychiatric disturbances caused by Mefloquine.

🔄 Drug Interactions

Halofantrine, Quinidine, Quinine	Increased risk of QT prolongation and fatal cardiac arrhythmias. CONTRAINDICATED.	High
Chloroquine	Increased risk of convulsions and psychosis. CONTRAINDICATED.	High
Anticonvulsants (e.g., Valproate, Carbamazepine, Phenytoin)	Mefloquine may lower seizure threshold; anticonvulsant efficacy may be reduced.	Moderate
Beta-blockers, Calcium channel blockers	Additive bradycardia.	Moderate
Ketoconazole, Itraconazole	May increase Mefloquine plasma levels via CYP3A4 inhibition.	Moderate
Rifampicin, Efavirenz, St. John's Wort	May decrease Mefloquine plasma levels via CYP3A4 induction, leading to treatment failure.	Moderate
Anticoagulants (Warfarin)	Mefloquine may potentiate anticoagulant effect; monitor INR.	Moderate
Typhoid Vaccine (Live oral Ty21a)	Mefloquine may inhibit antibody response. Administer vaccine at least 3 days after last dose.	Low

🔁 Alternatives to Mefliam Plus

Same composition (Artesunate (100mg) + Mefloquine (200mg)), different brands:

Mefloquine-AS Artemef Falcigo MQ