Below is a link to the National Institute on Drug Abuse (NIDA), DrugFacts on Heroin.
I think it is an informative article on Heroin and worth a look. The whole site is pretty interesting. Take a look if you get a chance.
Don't forget that FOA has meetings every Wednesday night at Sinclair Huber Heights location at 8 pm. Anyone affected or afflicted, please reach out and check out the meeting. I hope to see you there.