Abstract: A composition for intrauterine lavage comprising phenolic compounds encapsulated within a potentiated nanolipidic process is disclosed. The encapsulated nanolipidic preparation is preferably provided as a concentrated solution. Said concentrated solution is mixed with a sterile diluent suitable for the intrauterine environment, and said diluted nanolipidic preparation is used to lavage the uterus of a mammal in need of treatment of one or more conditions of the uterus and/or to maintain general uterine health. Preferably, the encapsulated phenolic compounds are extracted from Origanum vulgare.