Survey of plants popularly used for pain relief in Rio Grande do Sul, southern Brazil

Ethnobotanical data can be an important tool in the search for new drugs. The Brazilian Health Surveillance Agency accepts the registration of herbal medicines based on ethnopharmacological and ethnobotanical studies. With the purpose of increasing the knowledge of potentially useful plants for the treatment of painful conditions, we analyzed the ethnobotanical studies carried out in Rio Grande do Sul state (RS-Southern Brazil); we had access to nineteen studies.To our knowledge, this is the first compilation of ethnobotanical studies that focus on pain relief carried out in RS. The species na...