National Certified Addiction Counselor, Level I (NCAC I) Practice Exam 2026 – Comprehensive All-in-One Guide to Exam Success!

The correct answer is that Black Tar Heroin is primarily sourced from Mexico. This type of heroin is unrefined and has a distinctive dark color and a tar-like consistency, which comes from the crude processing methods typically used in Mexico.

This form of heroin is often associated with lower purity levels compared to others and can be found in various states of refinement and color. Black Tar Heroin is usually smuggled into the United States from Mexico, making it the most recognizable type linked to Mexican production.

In contrast, the other types mentioned—White Heroin and Brown Heroin—are more closely associated with production in Southeast Asia and the production methods differ significantly. White Heroin is usually considered more refined and has a higher purity, while Brown Heroin often contains a higher content of impurities and is not mostly sourced from Mexico. Therefore, Black Tar Heroin stands out for its specific association with Mexican drug trafficking operations.