In the vast majority of cases, this is used to treat heroin addiction.
In Ireland, the main treatment for opioid addiction involves methadone and the drug buprenorphine.
According to details released under the Freedom of Information Act, 7,645 people received opioid-substitution prescriptions from a community pharmacy in the first six months of this year.
This involved 5,200 men and 2,400 women.
Source: Irish Examiner, 10th September 2019