Mum, 33, Dies From Accidental Overdose After Being Prescribed Up to 18 Medications in Heartbreaking Medical Case

A 33-year-old mother has died after an accidental medication overdose involving a combination of up to 18 prescription drugs, an inquest in the UK has heard. Carrie-Anne Sladden, from Sheerness, Kent, suffered cardiac arrest on March 30, 2025, after experiencing worsening breathing difficulties. Her death has raised serious questions about how her medications were managed and whether earlier medical intervention could have helped save her life.

Carrie-Anne had a complex medical history, including chronic pain, respiratory disease, mental health difficulties and Addison’s disease. She had been prescribed approximately 17 or 18 medications, including powerful painkillers, antidepressants, diazepam and pregabalin. A previous doctor had reportedly expressed concern about the number of drugs she was taking, particularly the combined risks of sedation and breathing problems. However, the inquest heard there was no coordinated plan to reduce her medication burden.

In March 2025, Carrie-Anne was prescribed citalopram as a replacement for the antidepressant trazodone. Her family questioned whether she had been clearly instructed to stop taking the previous medication before starting the new one. The doctor involved acknowledged that his medical notes could have been more detailed. The coroner also found the records inadequate, although he could not establish exactly what instructions Carrie-Anne had received.

The mother began feeling breathless shortly before her death, and her family contacted NHS 111 and emergency services several times as her condition deteriorated. Paramedics attended on March 29, but she was not taken to hospital. The following day, another telephone assessment advised her to continue taking antibiotics for a suspected chest infection. Later that afternoon, Carrie-Anne suffered cardiac arrest. Her sister performed CPR until emergency crews arrived, but she was pronounced dead at 5:50 p.m.

Toxicology results revealed fatal concentrations of two antidepressants capable of triggering serotonin syndrome, a potentially life-threatening reaction caused by excessive serotonin activity. Medical experts explained that the condition had caused severe lung injury, fluid accumulation and ultimately acute respiratory failure. Coroner Ian Potter concluded that serotonin syndrome and the combined toxic effects of multiple substances contributed to her death. He also determined that the overdose was not intentional and that Carrie-Anne had been overprescribed medication.

The coroner identified a missed opportunity for a further face-to-face medical assessment, but said he could not determine whether an assessment or hospital admission would have changed the outcome. Carrie-Anne’s family said they intend to pursue further complaints following the inquest. Her daughter, Olivia-Jo, paid an emotional tribute, saying her mother was not simply another patient or a name on a medical record, but a person who deserved to be heard and properly cared for. The family hopes the case will lead to greater attention to medication safety and the needs of vulnerable patients.