This is a great question. In order to help slow heavy bleeding during peri-menopause, the tea can be drank for a few days to a week leading up to the bleed. If you aren’t sure when bleeding will begin, it can still be effective within a day or two, to slow bleeding, you could just increase the dose by one or two cups.
I hope this brings great support. Lady’s Mantle sure is magic. 🙂