This site summarises and links out; it doesn't replace the specialist organisations that research and deliver harm reduction. Below are well-respected, independent resources — use them to go deeper, find local services, and cross-check anything important. Where guidance differs, trust the specialist service and your local provider.
General harm reduction
Harm Reduction Coalition
US harm-reduction organisation; publishes the "Getting Off Right" safety manual and a service directory.
NEXT Distro
Mail-based naloxone, sterile supplies, and plain-language safer-use guides (US).
Release
UK centre of expertise on drugs and drug law — confidential advice and harm-reduction guidance.
Crew
Scottish harm-reduction charity with clear, drug-specific safety information.
Drug checking
Substance & interaction info
Overdose & finding help
Local services matter most Wherever you are, a local needle & syringe program or drug service can offer free supplies, naloxone, testing, and in-person advice. Searching for one near you is worth more than any website.