This could be a problem for people with kidney disorders.
The cause was complications from a kidney disorder, his family said.
Kenny, 15, spent eight years in and out of the hospital with a kidney disorder.
It was Mourning's most effective effort since coming back from a kidney disorder.
However, people with kidney disorders are advised not to take the supplements.
At the end of 1996, he was diagnosed with a rare and serious kidney disorder, which saw him take time off from the sport.
He had been repeatedly hospitalized in recent years for kidney disorders and died of a heart attack, local press reports said.
His ideas proved very useful in the diagnosis of kidney disorders.
Kaujeua died on 27 May 2010, after suffering from a kidney disorder for six months.
It was developed in the 17th century by a Dutch doctor seeking a cure for kidney disorders.