Warning over herbal medicine's impact on contraceptive pill
One unintended pregnancy has been linked with the herb used for menstrual problems: TGA
6th May 2019
A herbal medicine usually taken by women for menstrual disorders may interact with the contraceptive pill and has been linked with at least one unintended pregnancy, the TGA has warned.

In a safety advisory, the regulator says it has received a report of an unintended pregnancy following concurrent use of Vitex agnus castus with norethisterone, a progesterone-only contraceptive pill.
One other similar case has been reported overseas with the herb — also known as Chaste Tree, Chasteberry and Monk’s Pepper — and even