Amy Winehouse's body contained no "illegal substances" at the time of her death, according to toxicology results released by her family.
The singer's relatives have revealed that she had alcohol in her system, but they don't know yet to what extent this played a part in her death on 23rd July.
The inquest into the death of 27-year-old Winehouse, who had a much-publicised longstanding battle with drugs and alcohol, will be heard at the end of October.
Meanwhile, Winehouse's father Mitch has revealed that plans to launch a foundation in his daughter's name have had to be delayed because the charity name has already been registered by someone else.
He said: "The plan is to help all children - not just rehabilitation, not just substance abuse. It's to help all children in need."
Winehouse's father had told friends and family at the singer's funeral service that she had been her happiest "for years" in her final days.
The singer won widespread acclaim with her 2003 debut album Frank, which saw her nominated for the Mercury prize.
But it was 2006's Back to Black which brought her worldwide stardom, and won her five Grammy Awards in the US.