27 October 2020 · Combined hormonal contraceptives (CHC) are a combination of an oestrogen and progestogen administered either orally, transdermally or vaginally (via a vaginal ring). The oestrogen component…
1 June 2020 · This updated Medicines Q&A evaluates the available evidence regarding an interaction between St John’s Wort and combined and progestogen only hormonal contraceptives. Summary The interaction…