Shaun Lane has escaped suspension but will be $17,500 poorer after Parramatta fined the forward over a leaked Mad Monday photo.
The Eels on Saturday confirmed they and the NRL had finalised their investigation into the matter, with Lane accepting the punishment.
Lane has been in the headlines all week after an image emerged of him holding a plastic with a white substance, believed to be taken last year while he was at Manly.
"Shaun has accepted responsibility and demonstrated genuine remorse for his actions," the Eels said.
"The club is working closely with him to ensure he has a clear understanding of the club's professional standards.
"The club will continue to provide Shaun its full support."
Lane's photo had prompted debate over the future of Mad Mondays, after a drama-ridden end to last season for the NRL.
NRL boss Todd Greenberg on Wednesday warned players would be given a "whack" from the game if they misbehaved again this off-season.
Meanwhile Lane brushed aside any overhanging issues from the scandal, scoring a try against the Gold Coast on Friday night as the Eels wrapped up their finals spot.
Australian Associated Press