A teenager who died after taking too many painkillers had been prescribed the pills despite two recent overdoses on the same medication, an inquest has heard. Ellie Knight, 19, was given a month’s supply of anti-inflammatory drug Nefopam to manage back pain by a GP who later conceded with hindsight that he “should have given her less”. The animal lover overdosed on the pills a fortnight after receiving her prescription and suffered a cardiac arrest and severe brain damage. She was rushed to Margate’s QEQM Hospital but tragically died three weeks later on January 9 this year. Her family have no…