A 26-year-old London woman, Emily Butler, experienced a severe health crisis after being prescribed progesterone pills for irregular periods. Three days into the medication, she developed intense abdominal pain and nausea, leading to hospitalization. Doctors initially suspected other conditions but discovered dangerously low sodium levels and fluid accumulation. Further investigation led to a diagnosis of acute intermittent porphyria, a rare genetic blood disorder, triggered by the medication. Treatment with artificial heme began in the ICU.