A French tourist who was caught selling ecstasy at a Melbourne club on the same weekend that three people died from overdoses has avoided a jail sentence.

Sebastien Verger-Giambelluco, 30, appeared before the Melbourne Magistrates' Court on this morning, where he pleaded guilty to trafficking and possessing MDMA at a Chapel Street club in January.

The working holiday visa holder made full admissions to police about the 14 pills he had in his possession on January 15, when a woman at the club Revolver Upstairs was taken to hospital with a drug reaction.

Verger-Giambelluco attending a Melbourne court in January. (9NEWS)

Verger-Giambelluco told police he had gone to the club with 20 capsules and had sold six of them for $15 each, "but only to friends".

The Frenchman was arrested after a club-goer told a security guard his friend, a woman in her early 20s, had taken pills sold by Verger-Giambelluco.

The woman was taken to hospital in an erratic and aggressive state after taking what police believe to be MDMA.

Verger-Giambelluco had $1105 cash on him when searched by police, who also found a mobile phone that reportedly contained various messages relating to drug sales.

Magistrate Jelena Popovic said Verger-Giambelluco would have been jailed if there was evidence to show what had caused the woman's non-fatal overdose.

"This is one of the very rare circumstances where I would consider a jail term first and foremost," she told the court.

He has instead been convicted and fined $2000, to be paid within one month.

The magistrate said Verger-Giambelluco was "an outsider to this country who thinks it's appropriate to sell adulterated substances to our citizens".

His lawyer said her client had learnt his lesson after spending one night in custody.

"It put a fright into him," Tania Bolton said.

Verger-Giambelluco, who had worked as a waiter at a number of places, also lost his jobs as a result of the publicity surrounding his case and the death of three people who died in separate drug overdoses.

Twenty people were taken to hospital with drug overdoses linked to MDMA between January 13 and 15.

One man died after overdosing at a home in Elwood, while police say five clubbers were treated in hospital after partying at the Revolver Upstairs.





No one has been charged over the three fatal overdoses.