A school in Dublin city centre has objected to a supervised injecting room in the area after young pupils witnessed a woman overdose on heroin.
Children as young as five witnessed a woman collapse from a heroin overdose outside their school.
The incident happened last month in full view of students at St Audoen's National School and the woman was revived at the scene.
A supervised injection room is being proposed at the Merchant's Quay drug treatment centre which backs on to the school.
Principal Meagher said drug use is not something children should see.
She said: "Our junior and senior infants were leaving school as normal and parents notified me that there was a woman unresponsive across the road in full view of the school.
She also said if the service eventually gets the green light, it will cause significant problems for the school.
Principal Meagher said: "It does sound horrific, but unfortunately it is pretty commonplace. The current situation in Merchant's Quay and the service already being provided is immensely problematic for us as a school in terms of our child protection ability.
"That is a huge issue. If this goes ahead, there are significant problems going to arise.