Marathon runner supplement death: company response

The company behind a supplement which a coroner ruled may have contributed to the death of a marathon runner has defended its product. Claire Squires collapsed a mile from the line, apparently after taking Jack 3D, which contains an ingredient similar to an amphetamine. It's since been banned.

"USPlabs sympathises with the family of Ms Squires for their tragic loss. We continue to stand by the safety of the dietary ingredient 1, 3 DMAA.

"The ingredient has been the subject of seven clinical trials supporting its safety when used as directed. These studies place 1,3 DMAA among the most studied dietary ingredients on the market."

– USPlabs spokesman