The association between the availability of over the counter codeine and the prevalence of non-medical use.
Joanna HockenhullDavid M WoodFrancina FonsecaMarilena GuareschiNorbert ScherbaumJanetta L IwanickiRichard C DartPaul I DarganPublished in: European journal of clinical pharmacology (2022)
The prevalence of last 12-month NMU of any codeine product is approximately eight times greater in Spain and four times greater in the UK compared to Germany and Italy where the drug is only available by prescription. While other factors may contribute, these findings suggest that availability of codeine OTC is associated with greater NMU.