A pathologist at the Claire Squires inquest has told the coroner she died from acute heart failure complicated by the presence of the performance enhancing supplement DMAA.
The coroner at Southwark has also been told that DMAA is now a banned drug in this country since August 2012 .
Claire died in April 2012 just a mile from the finishing line of the London marathon.
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Duller conditions moving back towards the coast through the morning, leaving a mainly dry day with warm sunny spells.
Showery outbreaks of rain will become more widespread through Thursday with heavy and locally thundery downpours possible.
Pollen: West Midlands Update