A Hinchinbrook man allegedly carrying 201 MDMA capsules in a clear package in his underwear was one of six people charged with drug supply following a proactive operation at Transmission Music Festival.
The 18-year-old was charged with supplying a prohibited drug (indictable to commercial quantity) and possessing a prohibited drug.
He was granted strict conditional bail and is due to appear at Burwood court on March 16.
The arrest was part of a high-visibility police operation at Transmission Music Festival, which was held at Sydney Showground, Sydney Olympic Park.
The operation involved officers from South West Metropolitan Region, as well as the Police Transport Command and the Dog Unit.
During the police operation, 32 people were processed for drug possession, including nine Drug Criminal Infringement Notices (CINs) issued, two people were charged with fail to quit, and 45 people were ejected from the venue with two of those later charged with excluded person re-enter.
Six people, who were allegedly found with a total of 1878 MDMA capsules, were charged with drug supply.
Despite the actions of a small number of attendees, officers noted the 12,000-strong crowd was generally well-behaved.