BBC News
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image captionSouthern Health said it had improved protection for babies at Melbury Lodge
A baby ingested an opiate painkiller while under its mother's care in a psychiatric unit, a report has said.
The baby suffered two "life-threatening episodes" at Melbury Lodge, Winchester, in January 2017, Hampshire Safeguarding Children Board (HSCB) said.
The mother was arrested but not charged due to a lack of evidence, the report added.
Southern Health NHS Foundation Trust said it had improved safeguards as a result of the incidents.
The pair were sent to live at the Hampshire facility in December 2016, while subject to an interim care order to Surrey County Council.