A new report has found that two thirds of drug users who are intimidated or attacked by criminal gangs involved in the drugs trade do not report the incidents to the gardaí.
The report, by the CityWide anti-drugs campaign, also found that most of the attacks involved physical violence and damage to homes and property.
In one third of cases, mothers of drug users were targeted.
Almost half the respondents - 46% - said the intimidation involved physical violence and 32% reported damage to property or homes.
67% of those who experienced intimidation reported mental health problems as a result of that intimidation, 37% a physical injury and 30% reported other health problems.
70% report fearing for their personal safety in their own homes with 21% leaving home temporarily and 17% permanently.
Over two-thirds said they feared for their safety in their local areas and, as a result, avoided certain areas and people resulting in social isolation.
Source: RTÉ, 16/02/16