They can't buy alcohol or cigarettes - and minors may soon be banned from buying energy drinks, too.

The Quebec Federation of Home and School Associations is lobbying the Charest government to restrict the sale of the drinks to adults only.

With an average of four times the caffeine of a cup of coffee, the colourful beverages have been proven to cause electrolyte disturbances, nausea, vomiting and heart irregularities, according to Health Canada.

It's also causing disturbances in the classroom, said officials from the QFHSA.

"There's a crash afterwards, difficulty concentrating, not able to stay focused on the classroom and detrimental effects to their education," said QFSHA delegate Mike Besner.

The group wants to follow Prince Edward Island and Ontario's lead by adopting a resolution making energy drinks illegal for minors.

Though several school boards, like the Lester B. Pearson board have already banned the products on school property, it's not a fail-safe solution, said chairperson Marcus Tabachnick.

"We certainly can't stop our high school kids from leaving school grounds at lunchtime, but we're discouraging it," he said.