A hospital doctor who killed herself after her NHS funding for ketamine to treat depression was stopped had resorted to buying medication on the dark web, an inquest has heard. Dr Suzanne Parker, 37, had a history of mental ill health that dated back to her early teens and had been diagnosed as bipolar. In 2022, she was referred by her psychiatrist to a ketamine scheme for those with ‘treatment-resistant depression’. In February 2022, Dr Parker began the ketamine treatment with Oxford Health NHS Foundation Trust after a referral. While studying medicine, she co-founded Headucate, a student society that raises awareness of mental health issues and runs workshops.