Emergency services were called to Seaside Rec on Saturday afternoon following reports that a woman had collapsed outside the toilets after apparently taking drugs.
They received the call at 4pm from members of the public that a group of people were taking drugs inside the toilet block close to Firle Road.
A 31-year-old woman collapsed outside the toilet block and police and an ambulance was called. A passing fire engine also stopped to see if crews could help.
Police say friends of the woman had been giving her CPR.
A police spokesperson said the woman is believed to have been taking drugs and collapsed.
The woman was taken to Eastbourne DGH.
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