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Drug-Resistant Malaria - libdoc.who.int - World Health Organization

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APPENDICES / 117<br />

Note: A fixed combination of sulfalene 500 mg and pyrimethamine 25<br />

mg is available under the trade name Metakelfin. Its cost,<br />

regimen, efficacy and tolerance may be similar to the combination<br />

of sulfadoxine plus pyrimethamine. It is available ~n tablets<br />

(500 mg + 25 mg) and suspension (200 mg + 10 mg per ml).<br />

1.5 Tetracycline<br />

4-dimethylamino-l,4,4a,S,Sa,6,11,12a-octahydro-3,6,lO,12,12a-pe<br />

ntahydroxy-6- methyl-l,ll-dioxo-2-naphthacenecarboxamide<br />

Trade names:<br />

HCl salts Achromycin, Agromicina, Ambramicina,<br />

Bristacycline, Cyclapar, Cyc lomycin , Hostacyclin,<br />

Omegamycin, Panmycin, Polycycline, Purocyclina, Robitet,<br />

Sanclomycin, Sumycin, Tetra-Bid, Tetrabon, Tetracap,<br />

Tetrachel, Tetracyn, Tetradecin, Tetralan, Tetram<br />

Formulations available -<br />

Tablets or capsules of 500 mg,<br />

250 mg, 100 mg; syrup of 125 mg/S ml<br />

Regimen:<br />

Adults 1-2 g per day in 4 equal doses for 7-10 days<br />

Children (over 8 years) -<br />

for 7-10 days<br />

25-50 mg/kg in 2-4 equal doses<br />

Tetracycline has been shown to have blood schizontocidal<br />

activity in man. Its activity against an established infection<br />

with P.falciparum is, however, too slow and should never be relied<br />

upon alone. For that reason, it is generally used in combination<br />

with conventional doses of quinine for at least the first three<br />

days of therapy. Because of the widespread use of tetracyclines<br />

for many various infections numerous side effects have been<br />

reported. When used in children less than 8 years old tetracyclines<br />

may cause permanent discoloration of teeth and hypoplasia<br />

of enamel. Impaired bone growth may a Iso occur in very young<br />

children. For these reasons tet racyc lines should not be used in<br />

young children or pregnant women. Gastron<strong>int</strong>estinal <strong>int</strong>olerance<br />

is not uncommon including nausea, vom1t1ng, abdominal pain and<br />

diarrhoea. Less conunonly oesophageal ulceration and pseudomembranous<br />

colitis have been reported. When used in high doses or in<br />

patients with impaired renal function, liver toxic ity may occur.<br />

Outdated tet racyc line should never be used because it is<br />

nephrotoxic.<br />

Infrequent reactions include fever, urticaria, pseudotumor<br />

cerebri, headache, impaired vision, vertigo, haemolytic anaemia,<br />

leukopenia and phototoxicity.

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