AKT-3944

A 26-year-old woman presents at the clinic for a medication review. She was started on contraception by a colleague six months ago but is now experiencing irregular bleeding and weight gain. She is unsure if the contraceptive is causing her symptoms. The patient has a history of epilepsy and takes carbamazepine. She is a social smoker and has no family history.

During the examination, her body mass index is 28 kg/m², indicating a weight gain of 4 kg. Her blood pressure is 108/78 mmHg. What type of contraceptive is most likely to have been prescribed to her?