[cloudmountain]

While Afghanistan does produce huge amount of heroin, the vast majority of heroin used in the US originates from Mexico and South America.

Perhaps the Afghani heroin is for Europe and Russia while south of our border supplies U.S. heroin users. I'm SURE that the cartels are FAR better organized than we are.

[USNBandit]

This overdose problem is common in heroin for two reasons. The first is the quality variations in the product. Users get a more potent dose than they expect. The second is that dealers are cutting heroin with fentanyl and carfentanil, the latter being a large animal tranquilizer. Both are extremely dangerous in small quantities.