Abstract
This review focuses on plant species traditionally used in Rio Grande do Sul, Santa Catarina and Paraná states (southern Brazil) for the relief of digestive disorders. Fifty ethnobotanical studies were compiled, resulting in 384 species mentioned, of which those cited in common to every state were selected. The search retrieved 63 native species used to alleviate gastrointestinal disorders, distributed in 21 botanical families, mainly Asteraceae, Lamiaceae and Myrtaceae. The most cited species include Achyrocline satureioides(82%), Eugenia uniflora(70%), Baccharis crispa(46%), Psidium cattleyanum(36%), Solanum paniculatum(36%) and Monteverdia ilicifolia(34%). Scientific studies have corroborated their popular use for the relief the gastrointestinal disorders, but most of them are preclinical and mainly exploratory. In conclusion, the folk use of medicinal species with therapeutic purposes is widespread in southern Brazil, but further studies are needed to guarantee their efficacy and safety.
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