A 37-year-old woman died in hospital less than two weeks after being charged with drink-driving.
Hayley Birkett-Stubbs died in the Norfolk and Norwich University Hospital on May 20 last year.
An inquest into her death opening in Norwich on Monday heard Ms Birkett-Stubbs had suffered a hypoxic brain injury due to cardiorespiratory depression and was taken to hospital.
Area coroner Yvonne Blake told the short hearing these conditions were linked to multiple drug toxicity, including opioids and cocaine.
The court also heard she was born in Norwich and lived in Woodlands Avenue, Framingham Earl.
Her death came less than two weeks after she was arrested in Great Yarmouth and charged with drink-driving in the North Quay area of the town.
The incident happened on Monday, May 8 and she was taken to Great Yarmouth police station for questioning - where she gave a breathalyser reading of 110 microgrammes of alcohol in 100ml of breath.
She had been due to attend Great Yarmouth Magistrates' Court on July 12.
Her inquest was adjourned until 11am on August 20.
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