Preventing an overdose

https://www.fraserhealth.ca/health-topics-a-to-z/mental-health-and-substance-use/overdose-prevention-and-response/preventing-an-overdose#.XynuSxpKg2w

 

https://towardtheheart.com/assets/uploads/1498514225dTrmUNYZctPPU8PLC625RTaDpEBTB3rswcD0hYe.pdf