The drinks of at least six Munster Technological University (MTU) students were spiked with drugs last week in Co Kerry.
The MTU students' union says it happened during Freshers' Week, and it is now running a campaign to make students more aware of the danger.
The campaign saw SU officers placing lollipops in drinks that were left unattended, to highlight how easy it is to spike a drink.
President of the students' union, Chris Clifford, told Lunchtime Live people affected should not be afraid to come forward.
"We were just conscious that many of our students have not step foot in a nightclub environment due to the restrictions over the last 19 months.
"Any student that ends up in a situation like this should never be afraid to contact us, and there's plenty of supports available for these students".
He says the people who were spiked did not seem to be connected in anyway.
"They were all different people, really, socialising at a bar that actually wasn't affiliated with the students' union in Tralee.
"That was kind of the reason of the campaign as well - to spread that awareness that these things can occur.
"The victim is never to blame - we don't expect people to be watching their drinks all night, but it's just to show how easy it can happen.
"Thankfully all of them were OK and everything like that, there was no harm done physically or anything like that.
"But emotionally and mentally I'm sure it'll be a night for them to remember, and not for a good reason".
He says Gardaí have also been notified.