ZINNIA Inner Cleanse is a product made from plant extracts, and it does not have any negative effects on the menstrual cycle. However, some women may experience abdominal discomfort during their period, and when starting to take ZINNIA Inner Cleanse, may potentially cause stronger intestinal movements. If you don’t mind the possibility of increased intestinal activity, you can continue taking ZINNIA Inner Cleanse as usual during your menstrual period.