FDA has not yet classified the drug into a specified pregnancy category.
Mode of Action
Secnidazole is active against E histolytica, G lamblia, T vaginalis, Clostridium spp, B fragilis, Gardnerella spp. The drug enters the microorganisms by diffusion and is reduced intracellularly by low oxidation-reduction potential ferredoxin which then result in DNA damage.
Interaction
Concurrent disulfiram admin may cause psychotic reactions. Disulfiram-like reactions with alcohol. Cimetidine may prolong half-life.
Potentially Fatal: May potentiate anticoagulant effect of warfarin and increase risk of haemorrhage.
Pregnancy Category Note
Pregnancy
Data with secnidazole use in pregnant women are insufficient to inform a drug-associated risk of adverse developmental outcomes
In animal reproduction studies, there were no adverse developmental outcomes when secnidazole was administered orally to pregnant rats and rabbits during organogenesis at doses up to 4 times the clinical dose
Lactation
There is no information on the presence of secnidazole in human milk, the effects on the breastfed child, or the effects on milk production
Other nitroimidazole derivatives are present in human milk Because of the potential for serious adverse reactions, including tumorigenicity, advise patients that breastfeeding is not recommended during treatment with secnidazole and for 96 hr after administration of secnidazole
Adult Dose
Oral
Trichomoniasis; Amoebiasis; Giardiasis
Adult: 2 g as a single dose.
Severe invasive amoebiasis
Adult: 1.5 g daily as single or in divided doses for 5 days.
Child Dose
Oral
Trichomoniasis; Amoebiasis; Giardiasis
Child: 30 mg/kg as a single dose.
Severe invasive amoebiasis
Child: 30 mg/kg daily for 5 days.
Renal Dose
N/A
Administration
N/A
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