answersLogoWhite

0

Caffeine, by a wide margin. Marijuana is addictive over long-term heavy use. Caffeine users can become addicted in a matter of a few weeks.

(We know that we will get comments from people who do not want to believe marijuana is addictive. We have worked with recovering addicts for years, and can assure you from personal observation of many patients that THC, the active ingredient in marijuana, exhibits all of the characteristics of an addictive drug in heavy users.)

User Avatar

Wiki User

15y ago

What else can I help you with?