Report Illicit Drug Reactions (RIDR)

This website is for healthcare professionals to report cases of suspected harm with illicit substances:

If you require further information on the clinical management of a patient please visit:

For further information on New Psychoactive Substances please visit:


Public Health England has issued an alert about fentanyl-contaminated heroin.

For more information, see the full alert on the NHS Central Alerting System.


By registering with RIDR you can keep track of your reports and save your details for future reports

If you have already registered with the Yellow Card Scheme, please login .