The Sinn Féin proposal is being debated at second stage tonight.
There's a call on the Government to back a new bill to regulate the sale of nitrous oxide.
The Sinn Féin proposal is being debated at second stage tonight, and would limit the sale and purchase of the canisters to those with a license.
The gas is used in the hospitality and medical industries, but has become popular as a recreational drug among young people, with increased warnings of long-term health impacts.
Sinn Féin spokesperson on National Drug and Alcohol Strategy, Ann Graves says the rise in popularity can easily be seen:

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