Cocaine and heroin use costs Wales £780m a year
29 April 2013 Last updated at 08:31 BST
The social and economic cost of Class A drugs such as cocaine and heroin is estimated at £780m a year in Wales, according to those working to help the estimated 20,000 problem drug users in the country.
All this week BBC Radio Wales' Good Morning Wales programme will be investigating the problem.
Reporter Stephen Fairclough speaks to to a former heroin user, drugs workers and a parent of a drug user to learn more.