Getting Off Right: A Safety Manual for Injection Drug Users
Rules to live by if you know someone who uses or are a drug user yourself
Never use alone 
Never mainline with a dirty needle
Test your substance every time even if you think you know the supplier
You can always use more NOT less
Know how to use Narcan and carry it if you use or know someone who does
(even those who use meth and other non opiates can receive drugs laced with fentanyl)


For a more detailed breakdown of how to use safely refer to the following link....
https://harmreduction.org/hrc2/wp-content/uploads/2020/08/Resource-SaferDruguse-GettingOffRightASafetyManualforInjectionDrugUsers.pdf