Loperamide bloody diarrhea. In 1990, all formulations for children of the antidiarrheal loperamide were banned in Pakistan. Loperamide is not recommended in the UK for use during pregnancy or by nursing mothers. In the US, loperamide is classified by the FDA as pregnancy category C. Studies in rat models have shown no teratogenicity, but sufficient studies in humans have not been conducted. One controlled, prospective study of 89 women exposed to loperamide during their first trimester of pregnancy showed no increased risk of malformations. This, however, was only one study with a small sample size. Loperamide can be present in breast
Number needed to treat Number needed to treat The number needed to treat (NNT) is an epidemiological measure used in communicating the effectiveness of a health-care intervention, typically a treatment with medication. The NNT is the average number of patients who need to be treated to prevent one additional bad outcome (e.g. the number of patients that need to be treated for one of them to benefit compared with a control in a clinical trial). It is defined as the inverse of the absolute risk reduction, and computed as formula_1, where formula_2 is the incidence in the treated (exposed) group, and formula_3 is the