Warning over herbal medicine’s impact on contraceptive pill

One unintended pregnancy has been linked with the herb used for menstrual problems: TGA
Vitex agnus-castus

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.