Malason tablet is indicated for the treatment of all forms of malaria due to Plasmodium falciparum, Plasmodium vivax, Plasmodium malariae. The drug is also indicated for suppressive or prophylactic management, particularly in areas where resistance to chloroquine is known to exist.

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Dosage & Administration

Curative treatment of malaria with a single dose-
Adults: 2-3 tablets
Children under 4 years: ½ tablets
4-8 years: 1 tablet
9-14 years: 2 tablets
In severe cases, Sulphadoxine & Pyrimethamine can be beneficially combined with quinine.
Suppressive or prophylactic management-
The dose given below should be taken at one time:
For semi-immune subjects (Dose: once every four weeks)-
Adults: 2-3 tablets
Children under 4 years: ½ tablets
4-8 years: 1 tablet
9-14 years: 2 tablets
For non-immune subjects (Dose: Once every two weeks)-
Adults: 2 tablets
Children under 4 years: 1½ tablets
4-8 years: 1 tablet
9-14 years: 1½ tablets
For malaria prophylaxis: The first dose of Sulphadoxine & Pyrimethamine should be taken one or two days before departure for an endemic area in order to protect tolerance, administration should be continued in the above dosage during the stay and also for four weeks after return or as prescribed by the physician.

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Contraindications

Prophylactic (repeated) use of Pyrimethamine + Sulphadoxine is contraindicated in patients with severe renal insufficiency, marked liver parenchymal damage or blood dyscrasias. Treatment must be immediately discontinued upon the appearance of any mucocutaneous signs or symptoms such as pruritus, erythema, rash, orogenital lesions or pharyngitis.

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Side Effects & Adverse Reactions

Sulphadoxine & Pyrimethamine at the recommended dose is well tolerated. Main side effects are given below
Skin reactions
: Drug rash, pruritus and slight hair loss have been observed.
Gastro-intestinal reactions:
Feeling of fullness, nausea, rarely vomiting, stomatitis.
Haematological reactions
: In rare cases, leukopenia, thrombocytopenia, and megaloblastic anemia have been observed.
Other reactions
: Fatigue, headache, fever, polyneuritis may occasionally occur.

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Warnings & Precautions

Impaired renal or hepatic function, folate deficiency, severe allergy or bronchial asthma, G6PD deficiency, pregnancy. Take with plenty of water to prevent crystalluria. Avoid excessive exposure to sun. Discontinue at the first sign of rash. Discontinue if signs of folic acid deficiency develops. Regular CBC monitoring, LFT, analysis of urine for crystalluria when admin for > 3 mth. Take with food to minimise Gi effects (e.g. anorexia and vomiting).

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Pharmacology & Mechanism of Action

Sulphadoxine & Pyrimethamine is an antimalarial agent embodying the concept of synergism. Individually the components of this preparation exert inferior result with higher doses in comparison with that obtained with the combination. Moreover, this preparation is effective against strains that are resistant to other antimalarial agents and the risk of resistance development is minimum with this preparation. It is extremely long acting drug, attacks the different development stages of the parasite and attains effective concentration with a single dose. The protective effect of a single dose lasts for approximately four weeks and this preparation is compatible with other antimalarial drugs and with antibiotics. It does not influence the action of antidiabetic agents.

Medical Disclaimer: The clinical monographs, pricing, and formulations on OshudBD are compiled for reference and informational purposes only. Always seek the advice of a registered physician regarding any medical treatment.