Shane Warne has been criticised for giving "vague, unsatisfactory and inconsistent" evidence to the Australian Cricket Board's anti-doping tribunal.
Shane Warne has been banned from playing cricket for one year
The announcement follows the leg-spinner's one year ban for failing a drugs test.
The official findings of the three-man panel, published on Wednesday, describe Warne's decision to take a fluid tablet as "a reckless act totally disregarding the possible consequences".
The panel outlined that they dismissed Warne's 'exceptional circumstances' defence because of their "grave concerns" over the integrity of his evidence.
Warne was criticised for the "extreme vagueness" of his evidence regarding use of diuretics prior to his failed test on 22 January.
The findings also outlined how the panel felt Warne had not been "entirely truthful" when questioned about his knowledge of the ACB anti-doping policy.
Warne denied ever having read the ACB literature, learning from the official team sessions or previous cases such as that of Victoria team-mate Graeme Rummans.
The committee does not accept he was entirely truthful in his responses
ACB anti-doping tribunal findings
The findings concluded: "Much of Warne's evidence on these issues was unsatisfactory and the committee does not accept he was entirely truthful in his responses to questions about his knowledge of the ACB anti-doping policy.
"Coupled with that is his vague, unsatisfactory and inconsistent evidence about the extent of using a Moduretic.
"The committee is of the view that the evidence does not establish a reasonable belief such as would found a defence of exceptional circumstances.
"The use of the diuretic by Warne was a reckless act totally disregarding the possible consequences.
"He knew he was taking a chemical substance which would have some effect on his body but he made no enquiry when such enquiries were reasonably available as to whether it was a banned substance."