It was from a court hearing last November, that Wicks pleaded guilty to three separate counts of supplying drugs.
Wicks suspension comes under the NRL’s Anti-Doping Policy, which along with the World Anti-Doping Authority, carry a 4-year ban for trafficking.
The ban only begins however on the 19th of September, of this year, which is the last date of his country rugby league teams game.
“The case is a reminder to all players of the dangers of any association with illegal substances,” NRL chief executive David Gallop said in a statement.
Wicks awaits sentencing for the charges.